Department of Health, Nutrition and Exercise Sciences, North Dakota State University, Fargo, North Dakota 58108-6050, USA.
Am J Prev Med. 2011 Apr;40(4):454-61. doi: 10.1016/j.amepre.2010.12.016.
To date, no study has objectively measured physical activity levels among U.S. adults according to the 2008 Physical Activity Guidelines for Americans (PAGA).
The purpose of this study was to assess self-reported and objectively measured physical activity among U.S. adults according to the PAGA.
Using data from the NHANES 2005-2006, the PAGA were assessed using three physical activity calculations: moderate plus vigorous physical activity ≥150 minutes/week (MVPA); moderate plus two instances of vigorous physical activity ≥150 minutes/week (M2VPA); and time spent above 3 METs ≥500 MET-minutes/week (METPA). Self-reported physical activity included leisure, transportation, and household activities. Objective activity was measured using Actigraph accelerometers that were worn for 7 consecutive days. Analyses were conducted in 2009-2010.
U.S. adults reported 324.5 ± 18.6 minutes/week (M ± SE) of moderate physical activity and 73.6 ± 3.9 minutes/week of vigorous physical activity, although accelerometry estimates were 45.1 ± 4.6 minutes/week of moderate physical activity and 18.6 ± 6.6 minutes/week of vigorous physical activity. The proportion of adults meeting the PAGA according to M2VPA was 62.0% for self-report and 9.6% for accelerometry.
According to the NHANES 2005-2006, fewer than 10% of U.S. adults met the PAGA according to accelerometry. However, physical activity estimates vary substantially depending on whether self-reported or measured via accelerometer.
迄今为止，尚无研究根据 2008 年《美国人体育活动指南》（PAGA）客观测量美国成年人的身体活动水平。
本研究旨在根据 PAGA 评估美国成年人的自我报告和客观测量的身体活动。
使用 2005-2006 年 NHANES 数据，通过三种身体活动计算方法评估 PAGA：每周进行 150 分钟或更多的中等强度加剧烈强度体育活动（MVPA）；每周进行 150 分钟或更多的中等强度加两次剧烈强度体育活动（M2VPA）；每周进行 3 个代谢当量（MET）或更高的活动时间超过 500MET 分钟（METPA）。自我报告的身体活动包括休闲、交通和家务活动。客观活动通过佩戴连续 7 天的 Actigraph 加速度计进行测量。分析于 2009-2010 年进行。
美国成年人报告每周进行 324.5 ± 18.6 分钟（M ± SE）的中等强度身体活动和 73.6 ± 3.9 分钟/周的剧烈身体活动，尽管加速度计估计值为每周 45.1 ± 4.6 分钟的中等强度身体活动和每周 18.6 ± 6.6 分钟的剧烈身体活动。根据 M2VPA，自我报告的符合 PAGA 的成年人比例为 62.0%，而加速度计的比例为 9.6%。
根据 2005-2006 年 NHANES，根据加速度计，不到 10%的美国成年人符合 PAGA。然而，身体活动估计值根据自我报告或通过加速度计测量而有很大差异。
