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Effect of physical activity guidelines on physical function in older adults
Miriam C Morey1, Richard Sloane, Carl F Pieper
1Durham Veterans Affairs Medical Center/Geriatric Research, Durham, North Carolina 27705, USA. morey@geri.duke.edu
Journal of the American Geriatrics Society
|September 20, 2008
Summary
Meeting physical activity (PA) guidelines significantly boosts physical function (PF) in older adults. Maintaining recommended PA levels is crucial for preserving independence and quality of life.
Area of Science:
- Gerontology
- Public Health
- Exercise Science
Background:
- Physical function (PF) is critical for independence in older adults.
- National guidelines recommend at least 150 minutes of moderate physical activity (PA) per week.
Purpose of the Study:
- To determine if meeting PA guidelines is associated with higher PF in older adults.
- To examine the impact of changes in PA levels on PF trajectory.
Main Methods:
- Pooled data from two 6-month randomized controlled trials involving 357 adults aged 65-94.
- PA counseling via telephone and mailed materials.
- Self-reported PA (dichotomized at 150 min/week) and PF (SF-36 PF subscale) were measured.
Main Results:
- Individuals meeting PA guidelines had 20.3 points higher PF scores at baseline (P<.001).
- Decreasing PA below 150 min/week led to an 11.18-point decrease in PF (P<.001).
- Increasing PA to meet guidelines resulted in a 5.10-point increase in PF (P=.05).
Conclusions:
- PA is a significant predictor of functional status in older adults.
- Achieving recommended PA levels improves PF, while falling below has detrimental effects.
- Adherence to PA guidelines is vital for maintaining independence and quality of life.
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