Physical Activity Patterns Using Accelerometry in the National Weight Control Registry
Physical Activity Patterns Using Accelerometry in the National Weight Control Registry
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DOI：
10.1038/oby.2010.264
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发表时间：
2011-06-01
期刊：
影响因子：
6.9
通讯作者：
Wyatt, Holly R.
中科院分区：
文献类型：
--
作者：
Catenacci, Victoria A.;Grunwald, Gary K.;Wyatt, Holly R.
国家体重控制登记处（NWCR）成立于1993年，旨在检查成功减肥者的特征。这个群体一直自我报告高水平的身体活动。本研究的目的是获得客观的评估NWCR受试者的身体活动，并将其与正常体重和超重对照组的身体活动进行比较。来自NWCR的个体（n = 26）与NWCR组当前BMI匹配的从未肥胖的正常体重对照组（n = 30）和NWCR组自我报告的体重减轻前BMI匹配的超重对照组（n = 34）进行比较。使用三轴加速度计对1周的身体活动进行客观评估。对持续时间>= 10 min的中度至剧烈体力活动（MVPA）以及非MVPA（持续时间为1-9 min的MVPA）进行总结和表征。NWCR受试者每天持续MVPA发作的时间显著（P = 0.004）多于超重对照组（41.5 +/- 35.1分钟/天vs. 19.2 +/- 18.6分钟/天），略多于（P = 0.080）正常对照组（25.8 +/- 23.4）。三组间无统计学差异。这些结果提供了进一步的证据，表明身体活动对于长期维持体重减轻是重要的，并表明持续的意志活动（即，>= 10 min持续时间）可能发挥重要作用。可能需要针对增加结构化运动的干预措施来改善长期减肥的维持。
The National Weight Control Registry (NWCR) was established in 1993 to examine characteristics of successful weight-loss maintainers. This group consistently self-reports high levels of physical activity. The aims of this study were to obtain objective assessments of physical activity in NWCR subjects and compare this to physical activity in both normal-weight and overweight controls. Individuals from the NWCR (n = 26) were compared to a never-obese normal-weight control group matched to the NWCR group's current BMI (n = 30), and an overweight control group matched to the NWCR group's self-reported pre-weight-loss BMI (n = 34). Objective assessment of physical activity was obtained for a 1-week period using a triaxial accelerometer. Bouts of moderate-to-vigorous physical activity (MVPA)>= 10 min in duration, as well as nonbout MVPA (bouts of MVPA 1-9 min in duration) were summed and characterized. NWCR subjects spent significantly (P = 0.004) more time per day in sustained bouts of MVPA than overweight controls (41.5 +/- 35.1 min/day vs. 19.2 +/- 18.6 min/day) and marginally (P = 0.080) more than normal controls (25.8 +/- 23.4). There were no significant differences between the three groups in the amount of nonbout MVPA. These results provide further evidence that physical activity is important for long-term maintenance of weight loss and suggest that sustained volitional activity (i.e., >= 10 min in duration) may play an important role. Interventions targeting increases in structured exercise may be needed to improve long-term weight-loss maintenance.