Department of Physical Education, Sports, and Human Movement, Autonomous University of Madrid, Ctra. de Colmenar Km 11, 28049, Madrid, Spain.
Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Aging Clin Exp Res. 2018 Feb;30(2):199-203. doi: 10.1007/s40520-017-0761-4. Epub 2017 Apr 17.
Stair climbing is an activity of daily living that might contribute to increase levels of physical activity (PA). To date, there is no study examining the validity of climbing stairs assessed by self-report. The aim of this study was, therefore, to examine the validity of estimated stair climbing from one question included in a common questionnaire compared to a pattern-recognition activity monitor in older adults.
A total of 138 older adults (94 women), aged 65-86 years (70.9 ± 4.7 years), from the IMPACT65 + study participated in this validity study. Estimates of stair climbing were obtained from the European Prospective Investigation into Cancer and Nutrition (EPIC) PA questionnaire. An objective assessment of stair climbing was obtained with the Intelligent Device for Energy Expenditure and Activity (IDEEA) monitor.
The correlation between both methods to assess stair climbing was fair (ρ = 0.22, p = 0.008 for PA energy expenditure and ρ = 0.26, p = 0.002 for duration). Mean differences between self-report and the IDEEA were 7.96 ± 10.52 vs. 9.88 ± 3.32 METs-min/day for PA energy expenditure, and 0.99 ± 1.32 vs. 1.79 ± 2.02 min/day for duration (both Wilcoxon test p < 0.001). Results from the Bland-Altman analysis indicate that bias between both instruments were -1.91 ± 10.30 METs-min/day and -0.80 ± 1.99 min/day, and corresponding limits of agreement for the two instruments were from 18.27 to -22.10 METs-min/day and from 3.09 to -4.70 min/day, respectively.
Our results indicate that self-reported stair climbing has modest validity to accurately rank old age participants, and underestimates both PAEE and its duration, as compared with an objectively measured method.
爬楼梯是一种日常生活活动，可能有助于增加身体活动（PA）水平。迄今为止，尚无研究检查通过自我报告评估的爬楼梯的有效性。因此，这项研究的目的是检查在老年人中，一个包含在常见问卷中的爬楼梯问题与模式识别活动监测器相比，估计爬楼梯的有效性。
共有 138 名年龄在 65-86 岁（70.9±4.7 岁）的老年人（94 名女性）参加了这项验证研究，这些老年人来自 IMPACT65+研究。爬楼梯的估计值是从欧洲癌症与营养前瞻性调查（EPIC）PA 问卷中获得的。使用智能能量消耗和活动设备（IDEEA）监测器对爬楼梯进行客观评估。
两种评估爬楼梯的方法之间的相关性为中等（PA 能量消耗为 ρ=0.22，p=0.008，持续时间为 ρ=0.26，p=0.002）。自我报告与 IDEEA 之间的平均差异为 PA 能量消耗的 7.96±10.52 与 9.88±3.32 METs-min/天，持续时间的 0.99±1.32 与 1.79±2.02 分钟/天（均为 Wilcoxon 检验，p<0.001）。Bland-Altman 分析结果表明，两种仪器之间的偏差为-1.91±10.30 METs-min/天和-0.80±1.99 分钟/天，两种仪器的相应一致性界限分别为 18.27 至-22.10 METs-min/天和 3.09 至-4.70 分钟/天。
我们的结果表明，与客观测量方法相比，自我报告的爬楼梯对准确排名老年参与者具有适度的有效性，并且低估了 PAEE 及其持续时间。
