Table 1.

Definitions of the terms physical activity, fitness, and exercise [24, 25]

Exercise

A form of physical activity that is usually performed repeatedly over an extended time period and in a structured way to reach specific objectives such as health or performance improvements

Physical activity

Any bodily movement initiated by skeletal muscle contraction that leads to energy expenditure that is reached by either exercise or lifestyle physical activity (daily accumulation of at least 30 min of leisure, occupational, or household activities being at least moderate to vigorous in their intensity)

Fitness

A set of attributes (i.e., cardiorespiratory fitness, muscular strength) relating to the ability to perform physical activity