Term
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Definition
| A single muscle cell, usually classified according to strength, speed of contraction, and energy source. |
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Definition
| Protein structures that make up muscle fibers. |
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Definition
| An increase in the size of muscle fibers, usually stimulated by muscular overload, as occurs during strength training. |
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Term
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Definition
| A decrease in the size of muscle fibers. |
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Term
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Definition
| An increase in the number of muscle fibers. |
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Term
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Definition
| Red muscle fibers that are fatigue-resistant but have a slow contraction speed and a lower capacity for tension; usually recruited for endurance activities. |
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Definition
| White muscle fibers that contract rapidly and forcefully but fatigue quickly; usually recruited for actions requiring strength and power. |
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Term
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Definition
| The ability to exert force rapidly. |
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Term
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Definition
| A motor nerve (one that initiates movement) connected to one or more muscle fibers. |
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Term
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Definition
| The improvement in the body's ability to recruit motor units, brought about through strength training. |
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Term
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Definition
| A tough band of fibrous tissue that connects a muscle to a bone or other body parts and transmits the force exerted by the muscle. |
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Term
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Definition
| A tough band of tissue that connects the ends of bones to other bones or supports organs in place. |
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Term
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Definition
| The principal male hormone, responsible for the development of secondary sex characteristics and important in increasing muscle size. |
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Term
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Definition
| The maximum amount of resistance that can be moved a specified number of times. |
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Term
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Definition
| The number of times an exercise is performed during one set. |
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Term
| static(isometric) exercise |
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Definition
| Exercise involving a muscle contraction without a change in the length of the muscle. |
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Term
| dynamic(isotonic) exercise |
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Definition
| Exercise involving a muscle contraction with a change in the length of the muscle. |
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Term
| concentric muscle contraction |
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Definition
| A dynamic contraction in which the muscle gets shorter as it contracts. |
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Term
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Definition
| A dynamic contraction in which the muscle lengthens as it contracts; also called a pliometric contraction. |
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Term
| constant resistance exercise |
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Definition
| A type of dynamic exercise that uses a constant load throughout a joint's entire range of motion. |
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Term
| variable resistance exercise |
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Definition
| A type of dynamic exercise that uses a changing load, providing a maximum load throughout the joint's entire range of motion. |
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Term
| eccentric(pliometric) loading |
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Definition
| Loading the muscle while it is lengthening; sometimes called negatives. |
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Term
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Definition
| Rapid stretching of a muscle group that is undergoing eccentric stress, followed by a rapid concentric contraction. |
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Term
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Definition
| Moving a load as rapidly as possible. |
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Term
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Definition
| The application of force at a constant speed against an equal force. |
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Term
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Definition
| A person who assists with a wight training exercise done with free weights. |
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Term
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Definition
| A group of repetitions followed by a rest period. |
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Term
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Definition
| A muscle in a state of contraction, opposed by the action of another muscle. |
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Term
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Definition
| A muscle that opposes the action of another muscle. |
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