In isokinetic training, which variable is manipulated while the movement speed remains constant?

In isokinetic training, which variable is manipulated while the movement speed remains constant?

• A. External resistance
• B. Joint angle
• C. Muscle fiber type
• D. Time under tension

Answer: (A)

In isokinetic training, the movement speed is fixed by the dynamometer, which continuously adjusts resistance to keep the limb moving at the set angular velocity. The variable you actively modify to change how hard the workout is, without changing the speed, is the external resistance. By increasing or decreasing the resistance the device provides, you alter the workload while the pace stays constant. The other options don’t fit as the primary manipulated factor: joint angle (range of motion) can be set but isn’t the workload lever under constant speed; muscle fiber type is an inherent characteristic of the person; and time under tension is a consequence of speed and ROM rather than the primary control the machine uses to vary intensity at a fixed speed.

In isokinetic training, the movement speed is fixed by the dynamometer, which continuously adjusts resistance to keep the limb moving at the set angular velocity. The variable you actively modify to change how hard the workout is, without changing the speed, is the external resistance. By increasing or decreasing the resistance the device provides, you alter the workload while the pace stays constant. The other options don’t fit as the primary manipulated factor: joint angle (range of motion) can be set but isn’t the workload lever under constant speed; muscle fiber type is an inherent characteristic of the person; and time under tension is a consequence of speed and ROM rather than the primary control the machine uses to vary intensity at a fixed speed.