Physiology of Exercise Terminology Quizzes

Homeostasis

The body's ability to maintain a stable internal environment

Gain

The capability of a body system to correct a disturbance

Steady State

A physiological variable that is steady or unchanged

Adaptation

Structural and functional changes that occur in response to a continued stressor

Positive Feedback

The body's ability to restore homeostasis by reinforcing the stimulus

Negative Feedback

The body's response to a disruption in homeostasis by reversing the stimulus.

Oxygen consumption (VO2)

The body’s ability to utilize oxygen to convert foodstuffs into energy

Maximal oxygen uptake/consumption (VO2 max)

The most valid measurement of cardiovascular fitness and can be measured using a graded exercise test

Carbon dioxide production (VCO2)

Carbon dioxide is produced inside the cells of the human body as a byproduct of metabolism

Direct calorimetry

An individual’s heat production is measured to determine the metabolic rate

Indirect calorimetry

The use of a gas analyzer to measure the amount of oxygen consumed and carbon dioxide produced as the body metabolizes foodstuffs

Total Daily Energy Expenditure

The amount of energy, measured in kcals, that someone expends per day

Kilocalorie (kcal)

The unit used to express energy expenditure as well as the energy value of food