Changes in Self-estimated Step-Over Ability Among Older Adults: A 3-Year Follow-up Study
Changes in Self-estimated Step-Over Ability Among Older Adults: A 3-Year Follow-up Study
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DOI：
10.1093/geronb/gbaa219
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发表时间：
2021-12-01
影响因子：
6.2
通讯作者：
Imanaka, Kuniyasu
中科院分区：
文献类型：
--
作者：
Sakurai, Ryota;Fujiwara, Yoshinori;Imanaka, Kuniyasu
目的：越来越多的文献研究了与年龄相关的对自身体能的高估，这是老年人跌倒的潜在风险，但目前尚不清楚是什么导致他们高估。这项研究旨在检验自我估计跨越能力的三年纵向变化，以及一个关键的危险因素：低户外活动频率(FG)，这是一种衡量日常身体活动不足的指标。方法：这项队列研究包括116名社区居住的老年人，他们参与了基线评估和3年随访评估。跳跃测试被用来测量自我估计的跳跃杆高度(EH)和实际杆高度(AH)。低FG被定义为每隔几天或更少地在基线上外出。结果：在研究期间，高估了自己的跨越能力(EH>；AH)的参与者数量显著增加，从10.3%增加到22.4%。低空腹血糖和高空腹血糖的受试者在随访时的AH均显著低于基线水平。相反，在低FG的参与者中，EH在随访时显著高于基线，导致自我估计误差增加，导致高估。回归模型显示，低FG与后续估计误差(即高估倾向)的增加独立相关。讨论：本研究表明，老年人自我高估身体能力不仅是由于身体能力下降，而且是由于低FG增加了对自己能力的自我估计。积极的生活方式可能是保持对自己身体能力的准确估计的关键。
Objectives: There is a growing body of literature examining age-related overestimation of one's own physical ability, which is a potential risk of falls in older adults, but it is unclear what leads them to overestimate. This study aimed to examine 3-year longitudinal changes in self-estimated step-over ability, along with one key risk factor: low frequency of going outdoors (FG), which is a measure of poor daily physical activity.Method: This cohort study included 116 community-dwelling older adults who participated in baseline and 3-year follow-up assessments. The step-over test was used to measure both the self-estimated step-over bar height (EH) and the actual bar height (AH). Low FG was defined as going outdoors either every few days or less at baseline.Results: The number of participants who overestimated their step-over ability (EH > AH) significantly increased from 10.3% to 22.4% over the study period. AH was significantly lower at follow-up than at baseline in both participants with low and high FGs. Conversely, among participants with low FG, EH was significantly higher at follow-up than at baseline, resulting in increased self-estimation error toward overestimation. Regression model showed that low FG was independently associated with increased error in estimation (i.e., tendency to overestimate) at follow-up.Discussion: The present study indicated that self-overestimated physical ability in older adults is not only due to decreased physical ability but also due to increased self-estimation of one's ability as a function of low FG. Active lifestyle may be critical for maintaining accurate estimations of one's own physical ability.