This study evaluated prospective associations between self-reported and objectively measured physical activity (PA) and risk of falls among older adults. A cohort study started in 2014 with 1,451 community-dwelling older adults living in Pelotas, Brazil. Leisure-time PA was obtained by the International Physical Activity Questionnaire and 7-day raw accelerometer data evaluated for total, light PA, and moderate to vigorous PA. In 2016–2017, participants recorded their falls in the previous 12 months. Around 23% of the 1,161 participants followed-up in 2016–2017 experienced a fall in the last 12 months. Participants who did not spend any time in self-reported leisure-time PA at baseline had on average 34% higher risk of falls, and individuals in the lowest tertile for moderate to vigorous PA had on average 51% higher risk of falls compared to those in the highest tertile. Low levels of self-reported and objectively measured moderate to vigorous PA were related to higher risk of falling among Brazilian older adults.

本研究评估了自我报告和客观测量的身体活动 (PA) 与老年人跌倒风险之间的前瞻性关联。一项队列研究于 2014 年开始，对象是居住在巴西佩洛塔斯的 1,451 名社区老年人。休闲时间 PA 是通过国际身体活动问卷和 7 天原始加速度计数据评估总的、轻度 PA 和中度到剧烈 PA 获得的。在 2016-2017 年，参与者记录了他们在过去 12 个月的跌倒情况。在 2016-2017 年随访的 1,161 名参与者中，约有 23% 在过去 12 个月内经历过跌倒。在基线时没有花任何时间进行自我报告的休闲时间 PA 的参与者跌倒的风险平均高出 34%，与处于最高三分位的人相比，中度至剧烈 PA 处于最低三分位的人跌倒的风险平均高出 51%。自我报告和客观测量的低水平中度至剧烈 PA 与巴西老年人跌倒的风险较高有关。