Physical activityAny bodily movement produced by the skeletal muscles that results in a substantial increase over resting energy expenditure.
ExercisePhysical activity that is usually performed on a repeated basis over an extended period of time (exercise training) with a specific external objective such as improvement of fitness, physical performance or health.
ModeType of exercise (running, swimming, etc) AND temporal pattern of activity (continuous or intermittent activity).
IntensityAbsolute or relative (eg, percentage of one repetition maximum or maximum oxygen consumption: VO2max/heart rate (HR) reserve).
FrequencyNumber of sessions undertaken in a typical week.
DurationMinutes or hours of one session or the whole exercise period (3 months, 1 year).
FitnessA set of attributes (qualities) relating to the ability to perform physical activity/exercise.
Performance-related fitnessThose components of fitness that are necessary for optimal work or sport performance; the individual's ability in athletic competition, performance or occupational work.
Health-related fitnessA state characterised by (1) an ability to perform daily activities with vigour and (2) demonstration of traits and capacities that are associated with low risk of premature development of hypokinetic diseases and conditions.
ExerciserA person who performs regular strenuous exercise both for fitness and competition, but not representing any national team.
Elite athleteA person who is a member of any national team or other high-level representative team in any sport organised by a National Sports Federation.
PostpartumIn general, the period from childbirth until 6 weeks postpartum. For this review, we have extended this period to 12 months after childbirth.