Deconditioning occurs when a person does not exercise for a period of time. It may be limited or generalized. Deconditioning may involve loss of muscle mass and aerobic capacity.
Conditions associated with deconditioning:
(1) detraining (physiologic changes following discontinuation of physical activity and taking up a sedentary lifestyle)
(2) paralysis
(3) disuse following injury, which may be associated with crutches or casting
(4) prolonged bedrest
(5) confinement to a small space for a prolonged period
(6) spaceflight
Factors contributing to deconditioning:
(1) concurrent catabolic disease
(2) malnutrition and/or cachexia
(3) chronic fatigue
(4) depression or other psychiatric disorder
(5) frailty and advanced age
(6) vertigo
(7) visual impairment
(8) endocrine disorders
(9) prolonged stress
(10) obesity
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