Journal of the American Geriatrics Society · 2012
Physical activity and physical function in older adults: the 45 and up study.
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Yorston Lisa C, Kolt Gregory S, Rosenkranz Richard R
Аннотация
OBJECTIVES: To determine the strength of the relationship between physical activity and physical function in older adults.
DESIGN: Cross-sectional.
SETTING: The 45 and Up Study baseline questionnaire, New South Wales, Australia.
PARTICIPANTS: Ninety-one thousand three hundred seventy-five Australian men and women aged 65 and older from the 45 and Up Study.
MEASUREMENTS: Physical activity engagement (Active Australia Survey), physical function (Medical Outcomes Study Physical Functioning), psychological distress (Kessler-10), and self-reported age, smoking history, education, height, and weight were all measured.
RESULTS: Higher levels of physical activity were associated with better physical function in older adults (correlation coefficient = 0.166, P < .001). Participants engaging in higher levels of physical activity had progressively lower likelihoods of functional limitation (middle tertile: odds ratio (OR) = 0.39, 95% confidence interval (CI) = 0.38-0.41; highest tertile: OR = 0.28, 95% CI = 0.27-0.29). This relationship remained significant, but weakened slightly, when adjusted for age, sex, body mass index, smoking history, psychological distress, and educational attainment (middle tertile: adjusted OR (AOR) = 0.48, 95% CI = 0.46-0.50; highest tertile: AOR = 0.36, 95% CI = 0.34-0.37).
CONCLUSION: There is a significant, positive relationship between physical activity and physical function in older adults, with older adults who are more physically active being less likely to experience functional limitation than their more-sedentary counterparts. Level of engagement in physical activity is an important predictor of physical function in older adults.
DESIGN: Cross-sectional.
SETTING: The 45 and Up Study baseline questionnaire, New South Wales, Australia.
PARTICIPANTS: Ninety-one thousand three hundred seventy-five Australian men and women aged 65 and older from the 45 and Up Study.
MEASUREMENTS: Physical activity engagement (Active Australia Survey), physical function (Medical Outcomes Study Physical Functioning), psychological distress (Kessler-10), and self-reported age, smoking history, education, height, and weight were all measured.
RESULTS: Higher levels of physical activity were associated with better physical function in older adults (correlation coefficient = 0.166, P < .001). Participants engaging in higher levels of physical activity had progressively lower likelihoods of functional limitation (middle tertile: odds ratio (OR) = 0.39, 95% confidence interval (CI) = 0.38-0.41; highest tertile: OR = 0.28, 95% CI = 0.27-0.29). This relationship remained significant, but weakened slightly, when adjusted for age, sex, body mass index, smoking history, psychological distress, and educational attainment (middle tertile: adjusted OR (AOR) = 0.48, 95% CI = 0.46-0.50; highest tertile: AOR = 0.36, 95% CI = 0.34-0.37).
CONCLUSION: There is a significant, positive relationship between physical activity and physical function in older adults, with older adults who are more physically active being less likely to experience functional limitation than their more-sedentary counterparts. Level of engagement in physical activity is an important predictor of physical function in older adults.