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. 2020 Sep;32(9):1675-1687.
doi: 10.1007/s40520-019-01371-8. Epub 2019 Oct 17.

Physical activity and sarcopenia in older adults

Nathan F Meier  1   2 , Duck-Chul Lee  3
Affiliations

Physical activity and sarcopenia in older adults

Nathan F Meier et al. Aging Clin Exp Res. 2020 Sep.

Abstract

Background: Sarcopenia is prevalent in ever growing older adult populations.

Aim: The aim of this study was to quantify the association between physical activity (PA), sedentary time (SED), cardiorespiratory fitness (CRF), and strength (STR) with sarcopenia in community-dwelling older adults using a standard definition of sarcopenia.

Method: This cross-sectional study examined a large group of older adults (n = 304) who provided a broad range of health, lifestyle, and socioeconomic variables. PA was assessed using a pedometer worn for 7 days. SED was assessed by survey. CRF was assessed by 400-m walk test performance. Strength (STR) was assessed by one-repetition maximum chest and leg press. The European Working Group on Sarcopenia in Older People (EWGSOP) definition defined 10.9% (n = 33) as sarcopenic.

Results: PA, CRF, and STR were significantly associated with sarcopenia components (muscle mass, muscle strength, and muscle function). The upper two-thirds of CRF had significantly lower odds of having sarcopenia, whereas the strongest third of STR was associated with lower odds of sarcopenia. All exposure variables had significant odds ratios associated with at least one component of sarcopenia. Joint analyses indicated additional benefit may be gained from being both active (≥ 5000 daily steps) and fit (top two-thirds), active and strong (top two-thirds), and fit and strong.

Discussion: Overall, objectively measured PA, CRF, and STR, and self-reported SED, are associated with sarcopenia and its components.

Conclusion: Therefore, older adults who are physically active, maintain higher levels of cardiorespiratory fitness, upper and lower body strength, and avoid sedentary time may have significantly lower odds of sarcopenia.

Keywords: Aging; Cross-sectional study; Objective measurement; Physical activity; Prevention; Sarcopenia.

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