Aims: To compare the physical activity, sedentary activity and health-related quality of life (HRQoL)in institutionalized vs. non-institutionalized elderly, and to establish a pattern of relationship andprediction of physical and sedentary activity with physical and mental components of HRQoL.Methods: The sample consisted of 383 elderly with ≥ 75 years old (n=187 institutionalized andn=196 non-institutionalized). Were administered the International Physical Activity Questionnaire(IPAQ) and Short Form 36 Health Survey (SF-36) for evaluated the physical and sedentary activity andHRQoL. Also was used the Mini Mental State Examination (MMSE) as exclusion criteria for cognitiveproblems in the elderly. Results: Differences between institutionalized and non-institutionalizedelderly were found in moderate-intensity activities and walking, a favour of non-institutionalized. Theinstitutionalized elderly remain more minutes in sedentary activity. Also, were observed differencesbetween both groups in physical component of HRQoL, a favour of non-institutionalized elderly.The mental component remained unchanged. The multivariate regression analyses showed thatphysical activity predicted the physical (8 to 12%) and mental (5 to 8%) components of HRQoL forinstitutionalized and non-institutionalized elderly. Conclusions: Non-institutionalized elderly weremore physically active, spent less time in sedentary activity and showed better perception physicalcomponent of HRQoL that institutionalized elderly. An important and encouraging result of this studywas that physical activity is a predictor of improved physical and mental component of HRQoL forinstitutionalized and non-institutionalized elderly.
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