The ability to rapidly switch from an eccentric contraction to a concentric contraction is known as.

Correct option is C

The ability to switch rapidly from an eccentric (lengthening) contraction to a concentric (shortening) contraction is termed elastic reactive strength. This ability utilizes the stretch-shortening cycle (SSC), which is critical for explosive movements like jumping, sprinting, and change of direction.
1. Eccentric Contraction: The muscle lengthens while absorbing force (e.g., landing from a jump).
2. Concentric Contraction: The muscle shortens to produce force (e.g., jumping back up).
3. Elastic Energy: During the eccentric phase, energy is stored in the muscle-tendon unit and released during the concentric phase, enhancing power output.
Examples of activities that rely on elastic reactive strength:
· Plyometric exercises like box jumps or depth jumps.
· Sports movements like sprinting, where the stretch-shortening cycle is critical for performance.
Other Options: · (a) Starting strength: Refers to the ability to generate force at the beginning of a movement.
· (b) Speed strength: Refers to the ability to apply force rapidly, often related to explosive power.
· (d) Stabilization strength: Refers to the ability to maintain posture or stability during movement, not switching between contractions.
Correct Answer: (c) Elastic reactive strength Information Booster 1. Stretch-Shortening Cycle (SSC):
· Critical for elastic reactive strength.
· Comprised of three phases: eccentric, amortization (transition), and concentric.
2. Training for Elastic Reactive Strength:
· Plyometric drills (e.g., depth jumps, bounding exercises).
· Emphasis on reducing the amortization phase to maximize power.
3. Applications in Sports:
· Enhances performance in activities requiring explosive power and quick direction changes, such as basketball, soccer, and track and field.