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User Manual Manual Version 1.9 Software Version 1.9 For the latest news about this version, please refer to the News section on our website www.optogait.com...
Contents Device Functions and Major Features ...................... 6 Kit Configuration ................................ 8 Single Meter .......................... 9 1.1.1 Jump Test ........................9 1.1.2 Tapping/Frequency Test ....................9 1.1.3 Reaction Test ........................9 Single Meter on Treadmill ....................10 1.2.1 Gait Analysis, Run Analysis ................... 10 The Modular System ......................
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4.1.2 Insert / Edit Group ....................... 39 4.1.3 MediaGallery ........................ 41 4.1.3.1 Acquisition from Webcam ..................44 Test ............................46 4.2.1 Execute ......................... 46 4.2.1.1 Execute Configuration ..................49 4.2.1.2 Video Feedback ..................... 51 4.2.1.3 Metronome ......................56 4.2.2 Define / Edit Tests ......................57 4.2.2.1 Main and Secondary Parameters .................
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Operating Principles ........................... 131 Definition of Result Columns ..................... 131 5.1.1 General information ....................131 5.1.2 Jump and Reaction Test ..................... 132 5.1.3 Sprint/Gait Test ......................133 5.1.4 Reference Indexes ...................... 135 5.1.5 Imbalance Index ......................136 5.1.6 GaitR IN And OUT Filter ..................... 138 Gait Analysis Definition .....................
EVICE UNCTIONS AND AJOR EATURES OPTOGAIT is an innovative system for movement analysis and functional assessment of patients with normal or pathological conditions. The system is equipped with optical sensors working at a frequency of 1000 Hz and having an accuracy of 1 cm, detecting the relevant space and time parameters for gait, running or other test types.
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Thanks to the possibility to create an easy-to-read report in a few seconds, containing all main data, asymmetries between the two legs are highlighted instantly. Besides the below listed data, in each test average value, standard deviation, and variability coefficient are stated for each leg, where available. In this case, a difference between the two legs is shown in percentage Gait/Run Gait Test on...
ONFIGURATION OPTOGAIT is always sold in a KIT configuration comprising at least: 1 bar with interface RX 1 bar with interface TX (Optional for linear multiple-meter systems): n additional RX bars (Optional for linear multiple-meter systems): n additional TX bars ...
1.1 S INGLE ETER In this configuration Optogait allows already to carry out various test types: 1.1.1 J A series of exercises (squat jump, counter movement jump, drop jump, continuous jumps, jumps on one leg, etc.) and protocols ('Drift' for dynamic stability, '5 Dot Drill' for reactivity and endurance, 'Single Leg Three Hops' to verify the bending capacity and stability of the knee) are pre-configured.
1.2 S INGLE ETER ON READMILL 1.2.1 G NALYSIS NALYSIS Positioned on the side bars of a treadmill, OptoGait becomes a real portable lab for small spaces and with reduced costs. The system is compatible with the wide majority of treadmills and no synchronization is necessary to start and carry out a test.
1.3 T ODULAR YSTEM In this configuration, OptoGait allows to carry out: 1.3.1 G Gait tests can consist of simple exercises (moving from A to B), but also of more complex ones, such as 'roundtrip' or walking backwards. They can be more complex, if needed, adding obstacles (e.g. plastic cones) or actions to be carried out between the various gait phases (sitting down and getting up before coming back, for example) or simultaneously.
1.4 T IMENSIONAL YSTEM Starting from version 1.7 of the OptoGait software it is possible to use a particular bar configuration for obtaining a two-dimensional measurement area. To the classic bars (which we will call X) more bars (Y) can be added to form a rectangle, where new information can be gathered for the gait tests: ...
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4-meter-long linear gait system. For serial numbers lower than 00250 it is possible to ship the bar to Microgate or a distributor and receive a free update (shipping costs for sending and receiving are excluded). It is also possible to buy one or more additional single TX bars.
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The maximum length of the 2D course can be increased up to 13 meters purchasing one or more special Y TX bars called '2D-Boosted'. This kind of bar is equipped with stronger transmission LEDs compared to the others and has a front aluminium cover instead of the transparent lenses, in order to direct the narrow infrared LED beam.
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The bars situated on the perpendicular sides are connected using a variable-length cable (usually 1.5/2 m); this allows to distance the actual measurement area (the rectangle formed by the regular bars and highlighted in grey in the following picture) of the Y bars; this area allows the patient to leave the test area without having to jump over the bars or - more frequently - turn around by 180°...
1.5 E NVIRONMENTAL ONDITIONS AND ISCLAIMERS The system is intended only for indoor use and at a height of max. 2000 m a.s.l. Operating temperature 0°C ~ +35°C As of the manufacturer's specifications only the intended use is allowed. The estimated product life cycle is of 20 years. Positioning of the bars on the ground To avoid interferences between the patient and the bars, we advise a distance of at least one meter between the bars and we advise to pay attention that bars don’t hinder the gait.
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Positioning of the bars on the treadmill The bars must be positioned at the sides of the treadmill so that the minimal safety distance planned by the producer is obeyed. We recommend fixing "L" stirrups outside the chassis. When mounting the bars on the treadmill ensure that vibrations caused by walking/running do not move or make the bars fall down or onto the mobile area.
OFTWARE The interface with which the OptoGait system is managed is divided into three main sections: Patients’ Personal Data, Tests and Results. 2.1 I NSTALLATION Start the OptoGait.exe. setup program in the usual way for Windows. In the first installation window the user is asked where to save the files for the installation of OptoGait.
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If you want everyone with access to the computer to be able to use the product, select “Everyone”, otherwise select “Just me”. We advise you to leave the folder unchanged and select “Everyone”. Click on <Next> to continue. Figure 3 – Installation – data insertion. The next window offers to launch software installation.
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During installation the OptoGait and Logitech webcam drivers will also be installed. If for any reason this does not happen, please install the drivers separately. These are available on the Microgate USB key supplied with the hardware or on the www.optogait.com website in the support section.
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Figure 7 – Installation – completed. By clicking on <Close> you exit the installation procedure. During the entire installation procedure, it is possible to return to the previous window by clicking on <Back>. Version 1.9 Page 21 of 170...
2.2 D ESCRIPTION The welcome screen of the OptoGait software shows a horizontal bar with the most important menu items and an area with News and Events, which are automatically updated from the web site www.optogait.com in the appropriate language. In case of missing Internet connection, the information will not be downloaded;...
2.4 T This section is the software’s nerve centre. It is accessed to devise and configure new tests (jump, reaction, running, etc.) and to perform tests by choosing from the pre-defined tests or those created by the user. It is furthermore possible to group several tests (protocols), if this is useful for measuring particular capacities or conditions (some protocols are already pre-configured, e.g.
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The same report type is available when selecting two tests, allowing for a quick comparison thanks to a graphically intuitive and clear interface. Gait/Run reports show also if the patient's parameters are within the normal range of values. Extended Report – contains all numerical and graphical data, stored step by step during the test. In both report types it is possible to add screenshots taken with the video utility available in the 'View' option, as well as in the 'Compare' option.
With regard to the Vista operating system it has been found that if the installation program is not run as ‘Administrator’, the drivers are not installed. In this case, install the two drivers separately. These are available on the Microgate USB key supplied with the hardware or on the site www.optogait.com in the 'Support' section.
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Below is the step-by-step procedure for bar installation: Switch off the OptoGait device Place the two OptoGait Rx and Tx bars facing each other at a minimum distance of one meter (maximum 6 meters) Figure 10 – Maximum distance If a number of bars connected together are used, pay attention to the insertion of the caps (see figures below).
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To mount the connection cap, insert the cap in the dedicated slots and apply light pressure on both sides until it has been completely inserted (make sure it is parallel with the two bars; the two connectors should slot in simultaneously). The cap can only be inserted one way round.
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Connect the USB cable from interface Rx to the computer USB port. The USB port on the computer is marked with the symbol Figure 19 - PC connection If more than three OptoGait meters are used (three Tx bars and three Rx bars), we recommend you use the adaptor.
NB: Do not mix RX and TX bars. The bars are clearly marked and distinguishable. Figure 22 - TX bar Figure 21 - RX bar 3.3 P OWER UPPLY OptoGait runs on batteries with a life dependent on the number of bars connected. The blinking LED next to the adaptor connector shows the battery charge status: Green-blinking = battery sufficiently charged Red-blinking = low battery;...
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To recharge the battery, connect the adaptor plug to the dedicated socket on the drum. Use only one power supply and the cable connecting the supply adapter with the second bar to recharge the Single Meter (TX bar and RX with interface) Figure 24- Adapter and cable for second bar For the current supply and for recharging multiple meter linear systems, use two power supplies: one for the TX bar and one for the RX bar.
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Figure 26 - Power cables for various countries Version 1.9 Page 31 of 170...
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When using an external power supply, the device is disconnected from the power source pulling the plug. In order to avoid an electrical shock, the device must be exclusively connected to grounded power sources. DO NOT use power supplies other than the one supplied with the product. OptoGait contains rechargeable Li-Ion batteries (1800 mAh).
The default connector on the connecting cable is a LEMO connector on the interface side and a 3 poles 3.5mm Mini Jack on the EMG side. If you need another connector, please contact Microgate. Please note that the transmission of the impulses has a fixed delay of 300 milliseconds. To ensure data accuracy, your EMG software will need to take this delay into account.
Figure 27 - EMG Lemo Connector Figure 28 - Cable Lemo-Jack 3.5mm ESCRIPTION OF UNCTIONS In this chapter all the functions of every menu of the OptoGait program will be described, starting with the functions of the main menu. 4.1 P ATIENTS 4.1.1 I NSERT...
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Figure 29 – Edit Patients Click on the names of the columns (Last name, Name, Date of Birth) to order the list according to that field; clicking on the same column again reverses the order (A…Z, Z…A). Version 1.9 Page 35 of 170...
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To search for a particular patient or to filter data (e.g. search for all patients beginning with “Ros”), insert the text in the box at the top left and press <Search>. To remove the filter press <Delete filter>. Pressing the button <New Patient> opens a new panel in which the new patient’s data must be inserted.
The function for associating each athlete with a photo is useful, especially for trainers and coaches with many athletes to assess. This can be taken from a file previously saved on disk (in .jpg or .bmp format), or taken 'on the spot' with a previously connected webcam. In the first case click on <From File>...
4.1.1.2 I ’ P MPORTING AND XPORTING ATIENTS ERSONAL XCEL Once compiled in OptoGait, the Patients’ Personal Data can be exported into an Excel-compatible format (XML Spreadsheet 2003). Press <Export List> and specify the name and location of the XML file. If you have Microsoft Excel installed on your computer, double-click on the file icon to launch the program and view the columns with all relevant patients' data.
4.1.2 I NSERT ROUP In this section infinite groups and subgroups can be created, making it easy to manage the patients’ personal data. Figure 32 – Managing groups As a default there is always a group called ‘Patients’ which is the Parent group of the ones we will subsequently create.
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To add one or more patients to a group there are two other possibilities: Select the group to which you want to add a patient and press <Add to a Group>, select one or more patients by checking them in the grid and press <Confirm>. It is possible to use <Select All>...
4.1.3 M EDIA ALLERY The patient panel can be used to access the "MediaGallery" module: the aim of this section is to archive images and videos of postural situations without needing to carry out a test with the bars. You can take photographs, record videos and capture stills, making the patient assume various poses which are useful for evaluating his/her anthropometric measurements, posture or pathologies.
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If we want to see two photos side by side (to make a comparison, for example), click the thumbnail while pressing the CTRL key. Figure 34 - Comparing two photos Version 1.9 Page 42 of 170...
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When we are viewing a single image (or a still taken from a video), we can double-click - directly on the photo and not the thumbnail - to open the image editor with its various design tools, angles, etc. If we click Save, the image is saved with our annotations. Figure 35 - Photograph edited in the Still Image Analysis tool Version 1.9 Page 43 of 170...
4.1.3.1 A CQUISITION FROM EBCAM If no photographs have been taken and are ready to import, we can make use of the installed webcam (perhaps setting it to the maximum resolution as described in chapter 4.4.1.4.2). Click <Record from Video>. The webcam frame preview will be displayed. Click <Photo acquisition> to take a photograph which will be automatically added to the carousel.
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Once the video has been saved, its title and description can be edited by clicking on the thumbnail, while clicking on the video itself begins playback, with the following buttons appearing underneath: Slider for slow-motion playback (from 10% to 100%) ...
4.2 T 4.2.1 E XECUTE In this section the pre-defined tests or protocols are carried out. To define a test or protocol, see the sections below. In addition, before performing a test, at least one patient must be inserted in the database.
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Let’s look at an example: Choose one or more patients by pressing the orange <Select> button under the ‘Patients’ box, then tick one or more patients in the grid and press <Confirm>. Shortcuts are possible using the <Select All> and <Deselect All> buttons, whereas if the patient database has been organized in groups and subgroups, a group can be selected with <Select Group>.
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Test cycle We have seen that it is possible to select more than one patient and/or trials, using multiple selections or choosing a protocol, (a pre-defined sequence of pre-defined tests), and therefore have a ‘cycle’ of tests performed. In this case the arrows will appear in the respective boxes for moving the selected data.
4.2.1.1 E XECUTE ONFIGURATION Figure 38 – Execute Configuration Test data viewing can be configured by the user. The parameters are: Execution o Rotation based on: if more than one test or patient is selected, this indicates the chosen mode ...
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Chart o Chart: shows/hides the chart during the execution; if ‘show’ is chosen, it is possible to choose which values to display (Flight times, Contact times, Height, Power, Pace, etc.) and how (bars or lines). o Grid: shows/hides the white-dotted lines forming a grid on the chart. o Labels: displays/hides the labels for the numerical values on each spot of the chart.
4.2.1.2 V IDEO EEDBACK The main idea of this new feature is to show the patient directly some main parameters of the test he/she is carrying out. This allows to request real-time 'corrections' of some trial anomalies, making the test become an exercise, not only a diagnosis. Particular attention is paid to the concept of asymmetry, i.e.
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The new feature (available from version 1.7) is found in Test Module > Execute > Configure, with the two parameters 'Output second monitor' and 'Save Test Data'. When the 'Output Second Monitor' option is selected, a window is created on the second monitor (or on the same monitor, when the second one is not physically present), where the displaying of the absolute value or the test parameter asymmetry can be configured (e.g.
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Data Window: the amount of data used for calculating the asymmetry (the last N are used); the higher the data, the better the 'average' and the more real the value, but it will be more difficult for the patient to try and correct his/her asymmetry. ...
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4.2.1.2.1 Opto 4 Kids The special view 'Opto 4 Kids' is aimed at making tests fun for children, as they often get bored (especially during long tests on the treadmill) and their interest is not engaged. Instead of showing numeric values or histograms, which can be difficult for them to understand, we have designed an animated cartoon-style background and a character who has to climb a mountain (a baby dragon in this first version, but in future versions it will be possible to select a favourite avatar).
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Figure 41 - Two phases of the Opto 4 Kids video feedback Version 1.9 Page 55 of 170...
4.2.1.3 M ETRONOME While performing certain exercises (gait, walking on the spot, jumps), some patients find it easier to maintain a cadence if they are able to follow a constant rhythmic sound. OptoGait has a virtual 'metronome' function which can be used to set the cadence in bpm (beats per minute) and the tone (single or double).
In this section, the definitions of the tests to be performed can be defined or edited. You can view the list of tests pre-defined by Microgate (in italic) or those you have added yourself in the grid (in the example below ‘MY treadmill gait test’ is a test added by the user).
Name: name identifying the test type (e.g. ‘left foot monopodalic’ or ‘continuous jumps 30 seconds’, etc.) Test Type: this type indication is very important and conditions the fields below, which appear dynamically only after the type has been chosen from this drop-down menu: o Jump Test: type of test that measures flight time (and consequently height), as well as contact time during a series of jumps (in the former version this was called Contact/Flight time)
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Under Utility/Basic Configuration set the ‘Minimum contact time’ to 60 ms. From this moment, every time new types of ‘Jump Test’ are created, they will have a default value of 60 ms. If this value is acceptable, no further changes have to be performed in ‘Secondary Parameters’. Figure 43 - Basic Configuration Parameters Let’s suppose that for special needs a new test type is needed (e.g., ‘Three Jumps’) with a different value (e.g., 80 ms).
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the numeric results and the charts will change. If the results are acceptable, confirm by pressing <OK> and answer <YES> when asked to save the data (the difference between OK and Apply is that <OK> asks to confirm saving the new parameters and closes the function, whereas <Apply> does not close and allows to further adjust the parameters).
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4.2.2.1.1 Parameter Template The 'Template' field allows setting of secondary test parameters (in the definition but also at test level) following common usage cases. Let's suppose, for example, that a gait test is carried out on a modular system, with the athlete performing very short strides (typical of people who have had an injury), or shuffling the tip of the advancing foot.
The available fields for the different test types are the following: 4.2.2.2 J Main Parameters Start type: indicates if the start of the test must take place with a ‘status change’ (i.e. entering or exiting the bars) or with an ‘external impulse’ coming from the jack sockets (start button, signal light, etc.).
4.2.2.3 R EACTION TIMES Main Parameters Start type: Indicates what type of reaction the test must assess, that is: o “Visual stimulus”: on the PC screen a red circle becomes green after a random period of time; the patient must ‘react’ to this stimulus (e.g., by jumping) o “Acoustic stimulus”: the reaction stimulus is a sound emitted by the PC (using either an internal loudspeaker or a sound board) after a random period of time.
4.2.2.4 S PRINT AND Main Parameters Start type: indicates if the start of the test must take place with a ‘status change’ (i.e. entering or exiting the bars) or with an ‘external impulse’ coming from the jack sockets Start: indicates if at the beginning of the test the patient must be ‘inside the area’ of the bars or ‘outside the area’...
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Test Timeout [ms]: this is the end of test timeout in milliseconds; if during a Sprint/Gait test with ‘Timeout’ stop type no input or output signal is received from the measurement area by the OptoGait device for a period longer than or equal to the time set here, the test is considered completed.
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Figure 49– Example: bars with gap A practical configuration example of a system of 30 m could be the following: Starting block—50 cm – 13 meters OJ – hurdle – 8 meters – hurdle – 8 meters – hurdle – 1 meter Figure 50 –...
4.2.2.5 T READMILL UNNING Main Parameters Start type: this can only be ‘Software command’ or ‘External Impulse’ Stop type: this can be ‘Software command’, 'End of Time' or ‘External Impulse’ Starting foot: see above Test length: appears only if Stop type = ‘End of Time’ and specifies how many minutes:seconds the test must last (from 00:01 to 59:59) ...
4.2.2.6 T READMILL Main Parameters Start type: this can only be ‘Software command’ or ‘External Impulse’ Stop type: this can be ‘Software command’, 'End of Time' or ‘External Impulse’ Test length: appears only if Stop type = ‘End of Time’ and specifies how many minutes:seconds the test must last (from 00:01 to 59:59) ...
4.2.2.7 T APPING Main Parameters Start type: indicates if the start of the test must take place with a ‘status change’ (i.e. entering or exiting the bars) or with an ‘external impulse’ coming from the jack sockets Start: can only be ‘inside the area’ ...
4.2.2.8 V ERTEC Main Parameters Start type: indicates if the start of the test must take place with a ‘status change’ (i.e. entering or exiting the bars) or with an ‘external impulse’ coming from the jack sockets (start button, signal light, etc.). ...
4.2.2.9 2D G A new test type called '2D Gait Test' has been added from version 1.7 or higher. With this new type it is NOT necessary to specify the number of bars connected (X and Y), as this is detected automatically by the software (the only limitation is that the number of X bars must be >= Y bars).
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thanks to the greatly improved algorithms for the automatic recognition of various patterns, it has been possible to reduce the various types to only two, i.e. 'Normal' and 'Superposed Feet'. Similarly to the foot change, a rapid method has been added for changing the template directly from the Gait Report using the relevant button.
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Press <Export Test> and save the XML file on your hard drive. Open another database (or create a new one) and press <Import Test> choosing the file previously saved. The tests preconfigured by Microgate can be duplicated, but not edited or eliminated. Version 1.9...
4.2.3 D EFINE ROTOCOLS In this section, the protocols to be performed can be defined or edited. The protocols can be considered as a pre-defined series of tests to be performed in sequence (e.g., one ‘Squat jump’ + one ‘CMJ’ + one ‘Jumps 15 seconds’). To create a new protocol, ;...
4.3 R ESULTS Figure 55 – Results In the Results section, the performed tests or protocols are displayed. For better understanding, these three terms are defined as follows: Test is a single test (e.g. 15” jumps) performed on a certain date by a single patient. Protocol: is a pre-defined list of tests to perform in sequence.
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Filters Panel With the ‘Data’ radio button, select whether single tests, protocols or analyses should be viewed. In the latter case, with the icons expand or collapse the tests contained in the protocols. Figure 56 – Expanded Protocols List Choosing 'Analyses’, all saved analyses will be viewed with the saving date (which can be much later than the execution of the analysed tests).
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Test List Figure 58 – Test List Components Click on the column names (Patient, Test, Data) to display the list in order according to that field. Press again to reverse the order (A…Z, Z…A). To delete a test, press the symbol on the corresponding line of the chosen test;...
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From the test list, it is possible to perform two operations by RIGHT-CLICKING on one test line. More precisely: Change person: allows you to associate a test with another person, if the wrong association was made during execution; select the command and choose a patient from the displayed mask;...
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Test Analysis To view a single test, select the corresponding line in the ‘TEST ANALYSIS’ table and press the button <View> (or double-click with the mouse). See chap. 4.3.1 View. To compare two tests, enter the relevant tests in the ‘TEST ANALYSIS’ table and press <Compare>. See chap.
Videos acquired by (one or two) webcam(s); if the webcams are not connected when the test is performed, a fixed image with the Microgate logo will appear Charts displaying the results: it is possible to choose the chart type (lines or bars) and the measurement to be displayed (times, heights, powers, etc.)
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The table shows the list of all the external, flight and contact times acquired during the test. The data has been processed to obtain further information such as jump heights, energy, developed power, etc. See chap.5.1 Definition of Result Columns. In the case of Sprint/Gait test, step length, speed, and acceleration are also displayed.
At the top left (see figure below) is the command panel for checking test progress. Figure 64 – Command panel From left to right the commands available are: Back to the start of the test Back one frame Play/Stop Forward one frame Forward to the end of the test Move the progress bar (slider) by moving the cursor with the mouse.
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The <Set Start>, <Set Stop> buttons are for defining the start and end respectively of the part of interest. Place the cursor at the start and finish points of the desired movie clip and press <Set Start> and then <Set Stop>. Thus a part of the movie clip is isolated, deleting the uninteresting ‘dead’ periods.
Data o Data: shows/hides the grid with numerical data o Bars: shows/hides the OptoGait bars Video o Video: shows/hides the acquired video o Play: you can play ‘Single’ (only once) or ‘Continuous’ (looping the test) o Overlay: using graphical tools draw on a still picture and save this image as an overlay ( );...
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Figure 69 – Chart options If a setting is not available, it is displayed in black. e.g. if no second webcam is connected, the option 'View video#2' is disabled). The OptoGait software has a graphic tool for analysing images acquired by webcams. To enter this section, just double-click with the mouse on the still picture to process (see chap.
4.3.1.3 S TATISTICS HARTS Both during a test and in the subsequent data viewing and analysis, instead of the charts described in the previous chapter, it is possible to view a pie chart depicting the division of time elapsed between specific thresholds defined previously. The same panel used to configure the second monitor (see chap.
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4.3.1.4 T ABLE WITH UMERICAL In ‘Jump Tests’ or ‘Reaction Tests’, the numerical data to display are few and therefore almost always fit into one screen. On the contrary, in Sprint/Gait tests (regular or with treadmill), the table of numerical data has many columns (a horizontal scroll bar is shown);...
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In the Run Test (on a modular system or on a treadmill) there is another possibility, i.e. to view a dynamic report (Run Report) focusing on the asymmetry between the right and the left foot. Of course, the report can be viewed also under Results and in the print report. To view the report, click on the link highlighted in the upper left corner to toggle between Run Data, Gait Data, and Run Report.
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At the bottom of the data, some statistical data are calculated: Minimum Value Maximum Value Average (µ) Standard Deviation (σ) Coefficient of Variation (CV: ratio of the standard deviation to the mean) In some test types, values are calculated for each foot (left & right) Figure 72 –...
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4.3.1.4.1 Row Management Menu When RIGHT-clicking on a table row a context menu appears with the following items: Figure 73 – Data row management menu Restore row: allows you to reset a previously deleted row or a row connected to the row above or below as valid ...
4.3.1.5 S TART The Starting Foot can be defined during the creation of a test (see 'Define / Modify Test'), or afterward - keeping it as 'not defined' - during the analysis. Sprint and Gait Test on modular systems: Starting outside the test area: the starting foot is the first one to touch the ground inside the area;...
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If the START is assigned during a double support, as occurs quite often in Gait Tests, the starting foot is the one in front on the Treadmill. Figure 75 - Defining the starting foot = right foot, pressing START at this moment Assigning the starting foot before the test is of utmost importance when using OptoGait together with a surface electromyography, in which case, the EMG software needs to know the starting foot beforehand.
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Of course it is possible to do this afterwards using the same method described above for the Sprint and Gait Tests on modular systems (even as regards possible foot assigning errors). Figure 76 - Treadmill Running Test: assigning the starting foot Figure 77 - Treadmill Gait Test: assigning the starting foot (double support) Version 1.9 Page 93 of 170...
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The starting foot of run and gait tests with modular systems can be change several times. In a round-trip test, for example, it can be useful to change the foot with which the athlete has entered the area after having changed direction. By positioning the mouse on the footprint to be changed and pressing the right button 'Invert foot' is viewed.
4.3.1.6 V IDEO REVIEW OPUP IRST REVIEW While in the new '2D Gait' test the starting foot recognition (first step) is automatic, in other test types, such as Sprint and Gait (run and gait on linear systems), treadmill gait and treadmill running, the operator must decide which foot is the one that began the test.
4.3.1.7 V IEWING OF THE The OptoGait bars allow you to view afterwards the LEDs that have been interrupted (in red) and, if a starting foot has been set, to view the footfall thanks to the graphical footprints. The footprint length is directly proportional to the number of interrupted LEDs.
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the second LED to view the measure (the markers are green and red for the first and second point). Click anywhere on the bars and ESC to delete the measure. Figure 80 - Measure in cm or inches of the distance between two points In this view you can also temporarily delete a series of LEDs for a certain period of time.
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Zoom and Config Buttons on the Bars Clicking on the "+" icon at the beginning of the displayed bars, the latter can be zoomed. Click on the "-" icon to go back to normal view. Using the Configure Bars button (useful mainly for run or gait tests) the information to be displayed can be set.
4.3.1.8 P RINT When <Print> is pressed, a multi-page report is printed with the patient’s data, summarizing (average) test data, numerical test data (times, heights, power, etc.) and all the charts of the previous window. A box containing the index with the pages allows you (by clicking on each page) to rapidly select the desired section.
Go to page No. Close the report Search Zoom The buttons <Change logo> and <Change footer> allow you to customize the report adding your logo and your personal data (respectively printed in the top right corner and on the bottom line). Press <Export>...
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As explained in chap.4.2.2.1, secondary parameters can be customized for each test based on specific needs. Version 1.9 Page 101 of 170...
4.3.1.13 SING ARKERS In a test analysis, other markers besides Set Start and Set Stop can be added in certain spots of the video associating them to a note or a comment. The marker list (which can be created, edited and deleted freely) is also printed in the report showing minutes and comments.
4.3.2 C OMPARE In this section two selected tests are compared. The display structure is similar to the one presented in the previous section. Due to lack of space it is not possible to simulate the bars with the LEDs, which is possible when viewing a single test.
A range to be analysed has been set and the two tests will be synchronized on the point of the yellow marker (i.e., when the two patients begin the test). Another use of the <Synchro> button is to synchronize the two tests on a precise instant (e.g. 10 seconds after the beginning of the test).
4.3.3 H ISTORY The History section allows you to analyse a patient’s progress by graphically and numerically analysing a series of tests. Alternatively it can be used to analyse the members of a patient group by comparing them in a test of the same type. Select two or more tests (generally of the same type or uniform in order to ensure plausible data) and press <History>.
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Figure 91 – History Figure 92 – Team analysis; tests ordered by contact time, from the best to the worst Figure 93 - History of a single test for right/left asymmetries Version 1.9 Page 106 of 170...
The <Print> option allows you to create a report to be printed or exported in pdf, Excel, Word or Html format. 4.3.4 E XPORT To export data of one or more tests to Excel, add at least one test to the ‘TEST ANALYSIS’ table and press <Export>.
4.4 U TILITY 4.4.1 B ASIC ETTINGS The Basic Configuration section includes the following items: 4.4.1.1 G ENERAL Language: the language can be changed at any moment during the execution of the program. Select the desired language from the drop-down menu and press <Save>. Unit of measurement: allows you to set the unit of measurement type for viewing test output values.
Maximum flight time [ms]: allows you to set a maximum flight time in milliseconds; if the flight time is higher, it is considered incorrect. This is, for example, useful for a ‘round trip’ test, where the patient exits the measurement area, turns around and enters it again. The time for changing direction would be considered an abnormal flight time;...
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Figure 97– Basic Panel for Webcam configuration Press the <Advanced> button to display other commands: Zoom allows you to apply a digital zoom via software. Contrast, Brightness, Saturation, Sharpness allows you to adapt the image; it is advisable to move the corresponding cursor to test the effects of the command.
End of time video acquisition [s]: this is the time between the end of the test and the end of video acquisition (i.e., a certain number of extra seconds are recorded after the end of the test). Acquisition Format: allows you to choose the format for saving videos, which can be in ASF (more compact and compatible with Windows Media Player), AVI (also compatible with other players but less efficient compression) MJPEG or H.264 (the more compressed and efficient).
Figure 99 - Tip to Tip or Heel to Heel Step Length Minimum gap between feet [cm or ft]: is the minimum gap between tiptoe and the heel of the next feet. 3rd/6th/9th step speed reference: insert the reference speed for the 3rd/6th/9th step in m/s;...
seconds. For PCs that are permanently disconnected from the Internet (e.g. fixed stations on the training field without Internet) it is useful to disable the updating of news and events, to prevent the updating timeout. 4.4.1.8 EMG A CTIVATION If enabled, the output impulse is transmitted (with a fixed delay of 300 ms) through the LEMO connector (see chap.
4.4.2 O HW T In this section, the connected hardware (OptoGait bars and/or webcam) can be checked. Opening the function, if the webcam(s) is (are) connected, the live image should be displayed. If one or both images do not appear, check that they have been selected in the Basic Configurations | Video (chap. 4.4.1.4) or that the drivers have been installed correctly.
<YourUserName> Windows XP in Italian: C:\Documents and Settings\ \Documenti\Microgate\OptoGait Windows XP in English: C:\Documents and Settings\ <YourUserName> \My Documents\Microgate\OptoGait Windows VISTA/7: C:\Users\ <YourUserName> \Documents\Microgate\OptoGait etc.. Figure 101 - Folder where by default all database, settings, video, and image files are located The subdirectory VIDEO contains the videos (in .asf or .avi format depending on your choice in...
Example: Create a folder called MyTests on your hard disk (in the root directory or under Documents\Microgate\OptoGait ). Then create a folder for each new (empty) database inside this folder. Now each database will be stored in a separate folder with its video and image files.
Figure 102 - Database organization example 4.4.3.3 S ELECT If more than one database has been created, you can choose (browsing on the hard disk) which database is ACTIVE. 4.4.3.4 C LEAR Empties the current database of all Patients, Groups, Test Definitions, and Tests (tests, protocols, analyses) data.
Figure 103 - Saving the OGN file 4.4.3.6 I MPORT Imports an .OGN file previously exported to another PC or to the same PC, in case of data deletion or removal (restore). ). This command can also be used to merge two databases into one database. This operation is carried out in THREE steps: ...
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Figure 104 - Choosing the OGN file to import Version 1.9 Page 119 of 170...
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Now choose the directory for the import; if not present, create it using <Make New Folder>. The selected folder will contain the extracted files. The database is automatically set as current, as you can see in the relevant field: Version 1.9 Page 120 of 170...
4.4.3.7 S AVE AS This command allows you to DUPLICATE the CURRENT database. This can be useful for backups or to have a copy of the database in which you keep the data of Patients and Groups, but where you do not want test data (e.g., when beginning a new season).
The Utility>Devices menu allows to manage various PC external devices (one being of course the OptoJump bars). USB connected devices (at the moment OptoJump bars, Microgate Witty timer and variable speed Woodway treadmill) are automatically recognized and set as "active".
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START LAP1 LAP2 STOP Wireless Radio Transmission Max 150 mt. The test has to be set up as start and stop test = "External impulse" (which is given by the Witty timer when the athlete passes the photocells), with a number of intermediate times equal to the number of intermediate photocells of the system.
4.4.5 H EART ONITOR Some of the first wireless devices handled are the Polar and ANT+ cardio wraps (Garmin, Suunto, etc.). If the patient wears the cardio wrap during the test, his/her heart rate will be recorded and temporarily associated with the events of the test itself (e.g. with a jump, a step, etc.). Starting from version 1.8, the OptoGait software can handle a series of external devices, among which heart-rate monitors.
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To recognize it later and find it among other chest wraps, it is advisable to name it using a mnemonic name (e.g. “AthelteName Garmin Wrap” or “Polar#42” if you have numbered the wraps progressively, etc.) using the <Assign Name> function. Repeat for all the devices that you want to use;...
4.4.5.2 S PORT ETUP From the Utility menu you can configure how the so-called "SportZone" will be displayed on graphs of executed tests. There are 3 possible settings: 5 coloured bands (with customizable names), each one being a percentage of the athlete's Maximum Heart Rate ...
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Open an athlete's card, press <Next>>> in the lower right corner to go to the second page of the card and edit the 4 required values. Press <Save> to confirm the changes. The correct configuration and assigning of a heart-rate monitor is shown in the Test > Execute section.
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Figure 105 - Viewing only the heart rate with SportZone %FcMax Figure 106 - Viewing the HRM with bottom and top SportZone FC Version 1.9 Page 129 of 170...
4.4.6 C HECK PDATE This checks if the installed version is the most recent one. If not, OptoGait suggests you download the newest version from the site. NB: before pressing <Check Update> check that the Internet connection is active. 4.4.7 A BOUT This section displays respectively: ...
PERATING RINCIPLES 5.1 D EFINITION OF ESULT OLUMNS 5.1.1 G ENERAL INFORMATION Column #: contains information on the various row types. The following values are possible o External: row with a time generated by an external or end of test signal with a timeout or end of time.
5.1.2 J UMP AND EACTION TCont. [s]: Contact times TFlight [s]: Flight times Height [cm or in]: Height of jumps calculated with the following formula ∙ ℎ = Power [W/kg]: Expressed power calculated with the following formula (...
5.1.3 S PRINT The following are some useful definitions to explain the values displayed on the table with numerical data. Step: the distance between the tip (toe) of two subsequent feet or the distance between the heel of two subsequent feet depending on the settings in the parameter ‘Step length calculation’ (see chap.
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Acceleration: is calculated as the relation between speed delta of the two steps and the sum of the contact and flight time. Figure 112 - Acceleration calculation − = + + + 1 1 2 2...
5.1.4 R EFERENCE NDEXES In the Sprint and Gait Test parameters (chap. 4.4.1.5) the speed of an 'ideal' athlete (the so-called 'super athlete') during the 3rd, 6th, and 9th step can be indicated. These are in fact the three most interesting moments of a sprint;...
5.1.5 I MBALANCE NDEX The Imbalance Index column (Imb%) in sprint tests (Run Data) is an indicator of running 'asymmetry' between the right and the left. At first a linear interpolation of two supports the same type can be assumed. Consequently, the contact time of an ideal athlete's support would be halfway between the previous and the following;...
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Figure 117 - Example of imbalance index in Run Data Version 1.9 Page 137 of 170...
5.1.6 G R IN A OUT F ILTER Because of the particular configuration of the OptoGait hardware bars with sensors for detecting interruptions set at a few millimetres from the ground, in some cases the results will not correspond or match the power and/or pressure blocks, which by default are set at ground level. In fact, when the heel of the foot touches ground during the Load Response phase, the LED is interrupted a few milliseconds before contact with the ground and similarly, when the toe is lifted from the ground during the Pre-Swing phase, interruption is postponed.
5.2 G NALYSIS EFINITION Note: The names of these measurements are used in English, because the English terms are standard technical Gait Analysis terminology. Terms such as Single Support, Double Support, Stance, Swing, etc. are well known among professional; therefore these terms are not translated in any language. The following are some useful definitions to explain the values displayed on the table with numerical data.
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Figure 119 - Gait Cycle: Stance & Swing Each Gait cycle consists of two phases, where both feet are in contact with the ground, called Double Support: the first Double Support (DS1 in Figure Figure 118 referring to the right foot) is also called “Load Response”, whereas the second (DS2) is called “Pre Swing”.
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Run Data Columns TExt. [s]: External time: available only for external impulse. This is the time between the event (start/stop) of the impulse and the entry/exit into/from the OptoGait bars; it can also comprise split times Time [s]: progressive time (split) from the test beginning ...
Gait Data Columns TExt. [s]: External time: available only for external impulse. This is the time between the event (start/stop) of the impulse and the entry/exit into/from the OptoGait bars; it can also comprise split times Stance phase [s | %]: The stance phase is the weight phase supporting phase of each gait cycle.
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The OptoGait device is not installed correctly: if during a performance of a test, the OptoGait device is badly positioned on the ground, or the ground is particularly uneven, invalid flight or contact times may occur; The patient knocks against the device: if during the test the patient knocks against the device without causing it to lose its alignment, this may only temporarily generate some invalid times;...
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Invalid contact time (delete contact time): Cont. time Flight time is Cont. time Flight time 0.35 0.43 0.35 0.43 0.30 0.15 0.30 0.45 (0.15+0.05+0.25) 0.05 (inval.) 0.25 0.32 0.41 0.32 0.41 Invalid flight time (delete flight time): Cont. time Flight time is Cont.
5.4 V IDEO NALYSIS Figure 121 – Video Analysis To analyse a still video picture, double-click with the mouse on the video window. In a Compare analysis or in a test, where two webcams are used, use CTRL+double-click to edit the two images. Available commands are the following, from top to bottom: From left: ...
5.5 M ANAGING MAGES When saving an image (or two images in the case of video frames of a test comparison) it is possible to add a caption (i.e. a short name used as title) and a note (a larger field for an image description). Images are managed (caption and note editing, changing of order of appearance and possible deletion) using the button <Images>...
EFAULT ESTS AND ROTOCOLS Most tests are well-known standard tests (such as Squat Jump, Stiffness, Counter movement Jump) for which it is enough to follow the instructions on the screen (enter/exit test area, carry out a given number of jumps, wait for sound signal at the end of the test etc.). In this section you will find default tests and protocols which might raise some doubts as regards their initial setup and execution.
6.1 D RIFT ROTOCOL The Drift Protocol is a test developed for verifying an athlete's or a patient's 'dynamic stability' by having him/her carry out 4 tests one after another on one leg measuring his/her displacement (drift) on the vertical and horizontal axis. Go to Test >...
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At the end of the protocol go to Results, select the option 'Protocols' from Display>Data and choose the protocol which has just been executed, with the symbol Figure 125 - Selecting a protocol to be printed Double-click on the protocol to be analysed (or click the button <Display>); a report will be displayed showing the average jump values divided into right and left leg and, what's even more important, two graphs allowing to quantify very rapidly the displacements and their direction.
Figure 126 - Drift protocol report output 6.1.1 2D D RIFT ROTOCOL With its two-dimensional system (even the minimum 1 x 1 meter will suffice), the protocol can be significantly simplified by making the patient perform just 10 jumps (5 with the right and 5 with the left).
6.2 F RILL ROTOCOL The Five Dot Drill protocol (exercise with 5 circles) is a very well-known and popular test in the United States for improving ones agility and rapidity. Draw a rectangle of 60x90 cm (2x3 ft) and place five circles of 10 cm (4”) each inside it, as shown in the picture.
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Up & Back 1. Start with feet on A and B 2. Jump rapidly with both feet on C 3. Jump putting one foot on D and one on E 4. Jump back to the starting point 5. Repeat 5 times (6 times in total) Right Foot 1.
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Even though this is a single test, it must be carried out as PROTOCOL, because this allows to have a particular print report showing the 'level' based on the following table: DOT DRILL STANDARDS Less than 50 seconds Super Quick 50-60 seconds Great 60-70 seconds...
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Figure 130 - 5 Dot Drill report output The parameter '% Compared average' is calculated as difference between the average of all 5 tests and the average value of each single test. E.g. for Up & Back: (8.328 – 8.565) / 8.328 The fatigability index is calculated using the average of the first 6 contact time values and compared to the average value of the last 6 contact times.
6.3 'GG' P ROTOCOL This protocol (whose name is based on the initials of its inventors) is made of the following test series with the object of an initial athlete evaluation to be used during scouting phase. 1. Treadmill Gait Test at 5 kmh (usually for 30 seconds) 2.
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The 'Knee angle' parameter is an index which can be derived 'manually' from a video still image. Once the parameter with had been defined using the dedicated graphic tools, the value can be entered to the 'Indexes' section and will be showing in your print. Example: Expand the GG protocol, find the 'SquatJump 2 Legs' test and display it as a single test Find the desired spot in the video, double-click on the video and enter Video Analysis.
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6.4 S INGLE ROTOCOL This protocol allows evaluation of the functionality of the anterior cruciate ligament with two one- leg jumps consisting of 3 forward jumps each (possibly after post-injury rehabilitation) as regards power, as well as stabilization. Have the athlete carry out 3 forward hops (starting slightly out of the test area on the interface drum side) first with the left leg and then with the right leg.
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At the end of the test, a report can be viewed under 'Results', showing the main values divided by leg and differences in %. Figure 133 - Single Leg 3 Hops Protocol Report Of course, it is possible to see the details of a test by expanding the protocol and selecting 'View' in a test or 'Compare' to compare two tests.
6.4.1 2D S INGLE ROTOCOL If performed with a two-dimensional bar system, the report also provides information relating to side movement. 6.4.2 2D 4H3C 4H3C P ROTOCOL The two protocols are the same as the previous ones, but require 4 jumps forward instead of 3 (4H3c = 4 Hops, 3 Contacts).
6.5 MIP (M ARCH IN LACE ROTOCOL The MIP protocol consists of two tests in which the patient must march on the spot for 30 seconds, the first time with his/her eyes open and the second with his/her eyes closed. The test is defined with a starting point INSIDE the area and the right foot as the starting foot (the patient should therefore begin the test BY LIFTIING the right foot first).
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The Alpha angle is normally defined as follows: 0° -90° 90° Version 1.9 Page 163 of 170...
6.6 VERTEC LIKE T This test allows simulating the use of the famous VERTEC tool to analyse vertical jumps with one arm extended. A meter (or two meters for athletes jumping higher than 100 cm) can be attached to a wall with double-sided adhesive tape or mounted on a tripod with fixing clamps. It is important that the interface drums are positioned in the lower part and at the right height depending on the athlete's jump elevation.
6.7 S This test must be carried out with both feet parallel to the bars jumping sideways from one foot to the other (usually for 15 seconds). The main objective is to compare the contact and flight times, as well as the power of the right and left foot. Figure 136 - Ski Test: side jumps from one foot to the other Figure 137 - Ski Test results with separate times for right and left foot Version 1.9...
ECHNICAL 7.1 T TX/RX B ECHNICAL Internal power supply (range of measurement from 1 to 5 m) Rechargeable Li-ion battery 7.4V 1800mAh External power supply (range of measurement from 1 to 10 m) 24VDC ±5% Infrared wave length 890 nm Number of optical sensors 96 per meter Space resolution...
7.2 PC M INIMUM EQUIREMENTS A 'regular' desktop or notebook PC with Microsoft Windows XP Sp3, Vista Sp2, or Windows 7 is usually enough for running the OptoGait software without any problems. We recommend to perform a Windows Update before setting up the software. Minimum hardware requirements: MINIMUM SUGGESTED...
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Microgate, REI2, RaceTime2 and MiSpeaker are registered trademarks of Microgate s.r.l. Windows is a registered trademark of Microsoft co. Microgate s.r.l. reserves the right to modify the products described in this document and/or in the relative manuals without notice. The software and manuals are available in the following languages: Italian, English, German, French and Spanish.
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