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A type of isotonic contraction where the muscle shortens while producing force. Significance: Responsible for the 'lifting' phase of movements during exercises.

The full movement potential of a joint, usually its range of flexion and extension. Significance: Indicates the flexibility of the joint and is important for functional movement.

The ability of a muscle or group of muscles to sustain repeated contractions against a resistance for an extended period. Significance: Important for sports and activities that require sustained activity.

A motor neuron and the skeletal muscle fibers innervated by its axonal terminations. Significance: Fundamental in the process of muscle contraction and affects how fine or powerful movements can be.

An isotonic contraction where the muscle lengthens while under tension. Significance: Important for controlling movements and reducing the risk of injury during the 'lowering' phase of exercises.

The capacity of a joint to move through its full range of motion. Significance: It is key for performance in sports and daily activities and for reducing the risk of injuries.

Refers to the interconnected series of joints and segments that collaborate to perform movements. Significance: Disruptions in the kinetic chain can lead to dysfunction and injury.

The muscle that counteracts the action of the agonist muscle by lengthening when the agonist contracts. Significance: Helps to create smooth and coordinated movements.

A muscle that assists the agonist in performing a movement by stabilizing joints or by contributing additional force. Significance: Synergists prevent unwanted movements and ensure the efficiency of the agonist.

The study of the mechanical laws relating to the movement or structure of living organisms. Significance: Applies principles of mechanics to understand how the body moves and the forces involved.

Muscle fibers can be categorized into Type I (slow-twitch) and Type II (fast-twitch) fibers. Significance: Different fiber types are adapted for various activities, from endurance to power movements.

Muscle contraction that results in movement with either concentric or eccentric actions. Significance: Most common type of contraction in daily activities and exercises.

The body's ability to sense movement and position (kinesthesia) of its parts. Significance: Proprioception is crucial for coordination and balance.

The primary muscle responsible for generating a specific movement through contraction. Significance: Understanding agonists is crucial for designing effective exercise programs.