14643Baylor University, Waco, TX, USA.
University of Michigan School of Public Health, Ann Arbor, MI, USA.
J Aging Health. 2021 Jun-Jul;33(5-6):409-417. doi: 10.1177/0898264320988405. Epub 2021 Jan 31.
Physical activity (PA) may slow aging-related declines in physical functioning (PF), but the relationship of PA and falls is not well understood. This study examined the association of PA and PF with falls. The Study of Women's Health Across the Nation participants ( = 1597; age: 65.1 years ± 2.7) reported PF and PA in 2012-2013 and falls in 2016-2017. Four phenotypes were identified: high PA-high PF, high PA-low PF, low PA-high PF, and low PA-low PF. One-third (29.3%) reported ≥1 fall. Women with low PA-low PF (RR = 1.32; 95% CI: 1.06, 1.66) and with high PA-low PF (RR = 1.37; 95% CI: 1.07, 1.74) were more likely to fall than high PA-high PF. Over time, women with worsening PF had increased fall risk (RR = 1.43; 95% CI: 1.17, 1.74), but women who increased PA did not. Poor PF increases the risk of falls, regardless of PA. However, increasing PA does not necessarily increase fall risk, reinforcing the importance of PA engagement.
体力活动（PA）可能会减缓与衰老相关的身体机能下降（PF），但 PA 和跌倒之间的关系尚未得到充分理解。本研究旨在探讨 PA 和 PF 与跌倒的关系。全国妇女健康研究（ = 1597；年龄：65.1 岁 ± 2.7 岁）参与者于 2012-2013 年报告了 PF 和 PA，并于 2016-2017 年报告了跌倒情况。确定了 4 种表型：高 PA-高 PF、高 PA-低 PF、低 PA-高 PF 和低 PA-低 PF。三分之一（29.3%）报告了 ≥1 次跌倒。与高 PA-高 PF 相比，低 PA-低 PF（RR = 1.32；95%CI：1.06，1.66）和高 PA-低 PF（RR = 1.37；95%CI：1.07，1.74）的女性跌倒风险更高。随着时间的推移，PF 恶化的女性跌倒风险增加（RR = 1.43；95%CI：1.17，1.74），但 PA 增加的女性跌倒风险没有增加。PF 较差会增加跌倒的风险，而与 PA 无关。然而，增加 PA 不一定会增加跌倒的风险，这强调了参与 PA 的重要性。
