Fitness testing Measuring the indicators of the various aspects of fitness. The range of motion around a joint. Flexion A movement which moves the two ends of a jointed body part closer to each other, as in bending the arm. The amount of work required to lift one pound one foot. Frequency, along with duration and intensity affect the effectiveness of exercise.
Functional capacity See maximal oxygen uptake.
Glucose Blood sugar. The transportable form of carbohydrate, which reaches the cells. Glycogen The storage form of carbohydrate. Glycogen is used in the muscles for the production of energy. Golgi tendon organ Organs at the junction of muscle and tendon that send inhibitory impulses to the muscle when the muscle's contraction reaches certain levels.