Reactive method is also called:

Question

Accepted Answer

The correct option is (2):
The "Reactive method" is a common synonym for **Isokinetic training** in the field of exercise science and rehabilitation because of the unique way the resistance apparatus *reacts* to the user's force. In isokinetic exercise, a specialized machine, called an isokinetic dynamometer, is set to maintain a constant angular velocity or speed of movement. As the athlete applies more force, the machine immediately and proportionally increases the external resistance to ensure the pre-set speed is maintained. This automatic, accommodating resistance means that the muscle is maximally challenged throughout its entire range of motion, hence the term 'reactive.' This method is highly effective for isolating muscle groups and measuring performance for both training and rehabilitation.

The incorrect option is (1):
The Dynamic Concentric Method refers to the muscle shortening and creating tension during the *lifting* phase of an exercise. This term describes a muscle action (concentric) that is performed quickly (dynamic). While isokinetic training involves concentric contractions, the **Dynamic Concentric Method** typically implies lifting a fixed load, where the speed naturally fluctuates and the resistance does not automatically accommodate the muscle's strength curve. Therefore, it is a description of a phase of movement rather than a distinct, accommodating training method.

The incorrect option is (3):
Depth Jumping is a classic plyometric exercise designed to improve explosive power. This method relies on the **Stretch-Shortening Cycle (SSC)**, which is the nervous system's rapid response to a quick stretch before a forceful contraction. While the name implies a "reaction," the physical principle is fundamentally different from the Isokinetic method. Plyometrics involve body weight, gravity, and a very short ground contact time, whereas the reactive/isokinetic method involves a machine that controls speed and provides accommodating external resistance.

The incorrect option is (4):
Circuit Training is a general method of organizing a workout session. It involves performing a series of exercises one after the other with very little rest between stations, which primarily develops muscular endurance and cardiovascular fitness. It is a mode of *delivery* or structure for the workout (how exercises are arranged), rather than a specific type of resistance or muscle contraction principle. Circuit training can incorporate isotonic or isometric exercises, but it is not conceptually interchangeable with the Isokinetic or Reactive training method.