Which statement best describes isokinetic exercise?

• A. Exert resistance through a range of motion at a steady speed.
• B. Use muscle tension with little movement.
• C. Involve joint movement with contractions.
• D. Rhythmic activities for extended periods.

Answer: (C)

Isokinetic exercise involves moving a joint through a full range while the muscle actively contracts against resistance, with the speed of the movement kept constant by a specialized machine. The best statement captures this dynamic action: there is joint movement and muscle contraction occurring together. This distinguishes isokinetic work from purely static holds, where there is little or no movement, and from other types of exercise that emphasize rhythm or constant resistance without stressing controlled joint motion. Inisokinetic training, the resistance adjusts to maintain the set speed as you exert force, which is why focusing on joint movement with contractions best describes what’s happening during this type of exercise.