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CLINICAL CONSIDERATIONS
Isokinetic Speed Control provides accommodating resistance throughout the subject's entire
pedaling range of motion for the duration of the exercise period. Resistance continuously match-
es effort, accommodating to variations in the subject's force output due to weakness or pain at
specific points in the range of motion, and to fatigue over the course of the cycling period. With
a selection of 20 speeds (25 to 120 deg/sec), Isokinetic Speed Control can be used to maximize
strength gains while minimizing the potential for injury. The default Isokinetic speed setting is
60 rpm. Isokinetic workrate can reach 600 watts at 120rpm.
As subjects pedal with Isokinetic Speed Control, they will quickly notice that you can go only so
fast. Once the selected speed is reached, increasing effort results in increased pedaling resistance
- try as they might, subjects can't pedal any faster. On the other hand, if effort is lessened, the
pedaling resistance will decrease. This reflects the basic premise of Isokinetic exercise: fixed
speed with totally accommodating, variable resistance.
Just what is "totally accommodating, variable resistance?" Simply put, this means that at any
point in the range of motion (in this case, the pedaling revolution) the resistance encountered by
the user will exactly match the force exerted. In other words, the harder one pushes on the
pedal, the greater the resistance. Maximum speed never changes and there is little or no resis-
tance provided until the preset speed is achieved.
Because the SRC provides totally accommodating Isokinetic resistance for each and every pedal-
ing revolution, fluctuations in force output are instantaneously accommodated. Since the
amount of resistance the musculoskeletal system must overcome can never exceed that which it
can produce at any point in the range of motion, the Isokinetic mode ensures extremely safe and
comfortable exercise for rehabilitation users.
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SELECTING THE RESISTANCE MODE
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