Department of Kinesiology & Public Health & The Center for Health Research, California Polytechnic State University, San Luis Obispo, California, USA.
Texas A&M Agrilife Research, Dallas, Texas, USA.
Obesity (Silver Spring). 2021 Jun;29(6):1067-1073. doi: 10.1002/oby.23148.
This study aimed to investigate sitting time, the home sedentary environment, and physical activity among weight-loss maintainers in WW (formerly Weight Watchers).
Participants were 4,305 weight-loss maintainers who had maintained ≥9.1 kg of weight loss (24.7 kg on average) for 3.3 years and had an average current BMI of 27.6 kg/m . A control group of weight-stable individuals with obesity (n = 619) had an average BMI of 38.9 kg/m . The Multicontext Sitting Time Questionnaire and Paffenbarger physical activity questionnaire were administered.
Weight-loss maintainers versus controls spent 3 hours less per day sitting during the week (10.9 vs. 13.9; = 0.039; P = 0.0001) and weekends (9.7 vs. 12.6; = 0.038). Weight-loss maintainers versus controls spent 1 hour less per day in non-work-related sitting using a computer or video games during the week (1.4 vs. 2.3; = 0.03; P = 0.0001) and weekends (1.5 vs. 2.5; = 0.03; P = 0.0001). Weight-loss maintainers versus controls had similar numbers of sedentary-promoting devices (15.8 vs. 14.8) and expended significantly more calories per week in physical activity (1,835 vs. 785; = 0.036; P = 0.0001).
Weight-loss maintainers reported less time sitting than weight-stable individuals with obesity. Future research should test the efficacy of targeting sitting time to help promote long-term weight-loss maintenance.
本研究旨在调查 WW（前身为 Weight Watchers）减肥维持者的久坐时间、家庭久坐环境和身体活动情况。
参与者为 4305 名减肥维持者，他们体重减轻了≥9.1kg（平均 24.7kg），并维持了 3.3 年，目前的 BMI 平均为 27.6kg/m2。肥胖的体重稳定对照组（n=619）的 BMI 平均为 38.9kg/m2。使用多环境久坐时间问卷和 Paffenbarger 身体活动问卷进行评估。
与对照组相比，减肥维持者每周工作日每天少坐 3 小时（10.9 小时对 13.9 小时；=0.039；P=0.0001），周末每天少坐 2 小时（9.7 小时对 12.6 小时；=0.038）。与对照组相比，减肥维持者在工作日（1.4 小时对 2.3 小时；=0.03；P=0.0001）和周末（1.5 小时对 2.5 小时；=0.03；P=0.0001）非工作相关的使用电脑或视频游戏时，每天少坐 1 小时。与对照组相比，减肥维持者的促久坐设备数量相似（15.8 对 14.8），每周的身体活动消耗的卡路里明显更多（1835 对 785；=0.036；P=0.0001）。
减肥维持者报告的久坐时间少于体重稳定的肥胖个体。未来的研究应该测试以减少久坐时间为目标来帮助促进长期减肥维持的效果。
