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- W3010149154 abstract "Abstract Background It remains uncertain whether the association between physical activity (PA) and falls is U-shaped, and few studies have explored the potential mediation of PA accumulation pattern. Methods We measured PA in 671 community-dwelling older adults (82.7 ± 3.8 years) using wrist-worn accelerometer for 7 days. PA was further classified to bouted PA (≥10 minutes bout length) and sporadic PA (<10 minutes bout length) for subanalysis. Fall incidence in the following 12-month was recorded through tri-monthly telephone interviews. Classification and Regression Tree analysis was used to identify two optimal cutoff values of each PA measurement to predict falls. Participants were then divided into “inactive,” “moderately active,” and “highly active” groups accordingly. Negative binomial regression models were used to estimate the association between the PA measures and fall incidence. Results Six hundred and thirty-nine participants completed 12-month follow-up. Ninety-three (14.6%) experienced a total of 118 falls. Inactive and highly active older adults had higher falls per person month relative to the moderately active group (inactive: incidence rate ratios [IRR] = 2.372, 95% confidence interval [CI] = 1.317–4.271; highly active: IRR = 2.731, 95% CI = 1.196–6.232). Subanalyses found similar significant finding with bouted PA (p < .001) but not sporadic PA (p ≥ .221). The association between bouted PA and falls remained significant even after adjusting fall incidence for bouted activity time (inactive: IRR = 3.636, 95% CI = 2.238–5.907; highly active: IRR = 1.823, 95% CI = 1.072–3.1). Further adjustments for fall-related risk factors did not meaningfully change the results. Conclusion A U-shaped relationship was identified between bouted but not sporadic PA and fall incidence. There is an approximately twofold increase in fall rate in highly active older adults even after adjusting for activity time." @default.
- W3010149154 created "2020-03-13" @default.
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- W3010149154 date "2020-03-02" @default.
- W3010149154 modified "2023-10-14" @default.
- W3010149154 title "The U-Shaped Relationship Between Levels of Bouted Activity and Fall Incidence in Community-Dwelling Older Adults: A Prospective Cohort Study" @default.
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- W3010149154 doi "https://doi.org/10.1093/gerona/glaa058" @default.
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