Self-Report vs. Objectively Assessed Physical Activity: Which Is Right for Public Health?
Self-Report vs. Objectively Assessed Physical Activity: Which Is Right for Public Health?
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DOI：
10.1123/jpah.8.1.62
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发表时间：
2011-01-01
影响因子：
3.1
通讯作者：
Cumming, Sean P.
中科院分区：
文献类型：
--
作者：
Loney, Tom;Standage, Martyn;Cumming, Sean P.
背景：根据当前的公共卫生建议检查自我报告的体力活动（PA）与客观评估的体力活动（PA）之间的一致性。方法：114 名英国大学生佩戴组合式加速度计和心率监测器（Actiheart；AHR）来估算连续 7 天的 24 小时能量消耗。数据是根据建议改善和维持健康的基于人群的 MET 水平提取的。第 8 天，参与者被随机分配完成简短的国际体育活动问卷 (IPAQ) 或休闲时间锻炼问卷 (LTEQ)。将 PA 的持续时间（IPAQ；N = 46）和频率（LTEQ；N = 41）的估计值与 AHR 记录的值进行比较。结果：Bland-Altman 分析显示，对于中等强度和总 PA，IPAQ 和 AHR 之间的平均偏差较小，但 95% 的一致性限度 (LOA) 很宽。 LTEQ 估计的中度 PA 发作的平均次数与 AHR 得出的相似，但两种测量之间的 95% LOA 很大。结论：虽然自我报告问卷可以提供人群水平的 PA 近似值，但它们可能无法确定个人是否参与当前公共卫生建议中提倡的 PA 类型、强度和数量。
Background: To examine the agreement between self-reported and objectively assessed physical activity (PA) according to current public health recommendations. Methods: One-hundred and fourteen British University students wore a combined accelerometer and heart rate monitor (Actiheart; AHR) to estimate 24-hour energy expenditure over 7 consecutive days. Data were extracted based on population-based MET-levels recommended to improve and maintain health. On day 8, participants were randomly assigned to complete either the short-form International Physical Activity Questionnaire (IPAQ) or the Leisure-Time Exercise Questionnaire (LTEQ). Estimates of duration (IPAQ; N = 46) and frequency (LTEQ; N = 41) of PA were compared with those recorded by the AHR. Results: Bland-Altman analysis showed the mean bias between the IPAQ and AHR to be small for moderate-intensity and total PA, however the 95% limits of agreement (LOA) were wide. The mean number of moderate bouts of PA estimated by the LTEQ was similar to those derived by the AHR but the 95% LOA between the 2 measures were large. Conclusions: Although self-report questionnaires may provide an approximation of PA at a population level, they may not determine whether an individual is participating in the type, intensity, and amount of PA advocated in current public health recommendations.