Definitions Flashcards
Concentric
A type of isotonic muscle contraction in which the muscle develops tension and shortens when stimulated.
Eccentric
A type of isotenic muscle contraction in which the muscle lengthens against a resistance when it is stimulated; sometimes called “negative work” or “negative reps”
Expiration
The act of expelling air from the lungs; exhalation
Fatty Acids
Long hydrocarbon chains with an even number of carbons and varying degrees of saturation with hydrogen.
Fast Glycolytic System
Anaerobic process of metabolism that breaks down glucose and glycogen into ATP during high-intensity physical activity; also called the lactate system.
Glucose
A simple sugar; the form in which all carbohydrates are used as the body’s principal energy source.
Glycogen
The chief carbohydrate storage material; form by the liver and stored in the liver and muscle.
Ketosis
An abnormal increase of ketone bodies in the body; usually the result of a low-carbohydrate diet, fasting, or starvation.
Phosphagen system
A system of transfer of chemical energy from the breakdown of creatine phosphate to regenerate adenosine triphosphate (ATP).
Periodization
The systematic application of overload through the pre-planned variation of program components to optimize gains in strength (or any specific component of fitness), while preventing overuse, staleness, overtraining, and plateaus.
