Pedometer counts superior to physical activity scale for identifying health markers in older adults
Pedometer counts superior to physical activity scale for identifying health markers in older adults
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DOI：
10.1136/bjsm.2008.048827
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发表时间：
2010-08-01
影响因子：
18.4
通讯作者：
Attia, J.
中科院分区：
文献类型：
--
作者：
Ewald, B.;McEvoy, M.;Attia, J.
目的 测量体力活动是研究其健康影响的关键部分。问卷和计步器各有缺点，但它们是大规模研究中最便宜且最容易使用的测量方法。我们检查了他们检测体力活动与一系列替代健康指标之间预期关联的能力。设计对 669 名社区居民参与者（平均年龄 63.3 (7.7) 岁）进行横断面分析，他们完成了老年人体力活动量表 (PASE) 问卷，并在 2 周内佩戴计步器 7 天。结果 PASE 评分和步数的相关性很差（女性 r = 0.37，r =男性为 0.30）。在检查活动与健康替代标志之间的 12 种预期关联中，其中 10 种通过步数计数检测为具有统计显着性，但只有 3 种通过 PASE 评分检测到。研究发现，步数与高密度脂蛋白、体重指数、腰围、腰臀比、血糖水平、白细胞计数和纤维蛋白原之间存在显着的相关性。与收缩压或舒张压没有关联。 PASE 评分与这些标志物之间的关联仅对女性的体重指数和腰围以及男女的腰臀比显着。步数乘以步幅长度的关联性比原始步数的关联性更强。 结论 与 PASE 分数相比，计步器得出的步数是该样本中整体身体活动的更有效的衡量标准。研究人员应尽可能使用客观的身体活动测量方法。
Objective Measuring physical activity is a key part of studying its health effects. Questionnaires and pedometers each have weaknesses but are the cheapest and easiest to use measurement methods for large-scale studies. We examined their capacity to detect expected associations between physical activity and a range of surrogate health measures.Design Cross-sectional analysis of 669 community-dwelling participants (mean age 63.3 (7.7) years) who completed the Physical Activity Scale for the Elderly (PASE) questionnaire and who, within 2 weeks, wore a pedometer for 7 days.Results PASE score and step count were only poorly correlated (r = 0.37 in women, r = 0.30 in men). Of 12 expected associations examined between activity and surrogate markers of health, 10 were detected as statistically significant by step counts but only 3 by PASE scores. Significant associations in the expected direction were found between step counts and high-density lipoprotein, body mass index, waist circumference, waist-to-hip ratio, blood glucose level, white cell count and fibrinogen. There was no association with either systolic or diastolic blood pressure. The association between PASE score and these markers was detected as significant only for body mass index and waist circumference in women and waist-to-hip ratio in both sexes. Associations were stronger for steps multiplied by stride length than for raw step count.Conclusions Pedometer-derived step counts are a more valid measurement of overall physical activity in this sample than PASE score. Researchers should use objective measures of physical activity whenever possible.