Isometric Exercise Is Designed to

question 105

Multiple Choice

Isometric exercise is designed to

• A) increase cardiovascular fitness.
• B) increase lung capacity.
• C) increase muscle endurance.
• D) increase muscle strength.

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Definitions:

Motor Units

A motor unit consists of a single motor neuron and all the muscle fibers it innervates, essential for muscle contraction.

All Or None

A principle stating that a neuron either fires with a full response or does not fire at all, depending on stimulus strength.

Contraction

The process in which a muscle becomes shorter and tighter, producing movement or exerting force.

Single Muscle Contraction

The process by which a muscle fiber receives a nerve impulse and momentarily contracts or shortens.