PROSOURCEFIT DOORWAY PULL-UP BAR Instruction Manual & Exercise Manual page 6

PULL-UPS FOR STRENGTH
1.
Do as many pull-ups as you can until muscle failure
2.
Complete four sets of repetitions and chart your progress. When you can do
12 standard pull-ups, begin the endurance practice described below.
When you can do 15 standard pull-ups, increase your resistance. There are two
ways to increase resistance. Add small ankle or waist weights (5 - 10 lbs.). Or you
can try one arm assisted pull-ups.