Peyer Karissa L, Ellingson Laura D, Bus Kathryn, Walsh Sarah A, Franke Warren D, Welk Gregory J
University of Tennessee at Chattanooga, 105 Metropolitan Building, 518 Oak Street, Chattanooga, TN 37403, USA.
Iowa State University, Department of Kinesiology, USA.
Prev Med Rep. 2017 Mar 25;6:271-277. doi: 10.1016/j.pmedr.2017.03.002. eCollection 2017 Jun.
Many consumer-based physical activity monitors (PAMs) are available but it is not clear how to use them to most effectively promote weight loss. The purpose of this pilot study was to compare the effectiveness of a personal PAM, a guided weight loss program (GWL), and the combination of these approaches on weight loss and metabolic risk. Participants completed the study in two cohorts: Fall 2010 and Spring 2011. A sample of 72 obese individuals in the Ames, IA area were randomized to one of 3 conditions: 1) (GWL, N = 31), 2) PAM, N = 29, or 3) a combination group (PAM + GWL, N = 29). Weight and metabolic syndrome score (MetS), computed from waist circumference (WC), BMI, blood pressure (BP), and lipids were assessed at baseline and following an 8-week intervention. Weight was also assessed four months later. Two-way (Group × Time) ANOVAs examined intervention effects and maintenance. Effect sizes were used to compare magnitude of improvements among groups. During the intervention, all groups demonstrated significant improvements in weight and MetS (mean weight loss = 4.16 kg, < 0.001). Mean weight continued to decline modestly during follow-up, with average weight loss of 4.82 kg from baseline ( < 0.01). There were no group differences for weight loss but the PAM + GWL group had significantly larger changes in MetS score ( = 0.06-0.77). The use of PAM resulted in significant improvements in weight and MetS that were maintained across a four-month follow-up. Evidence suggests that the addition of GWL contributed to enhanced metabolic outcomes.
市面上有许多基于消费者的身体活动监测器（PAM），但尚不清楚如何最有效地利用它们来促进减肥。这项初步研究的目的是比较个人PAM、引导式减肥计划（GWL）以及这两种方法相结合在减肥和代谢风险方面的效果。参与者分两个队列完成了该研究：2010年秋季和2011年春季。爱荷华州埃姆斯地区的72名肥胖个体被随机分为3种情况之一：1）（GWL，N = 31），2）PAM，N = 29，或3）联合组（PAM + GWL，N = 29）。在基线时以及8周干预后，评估了体重和代谢综合征评分（MetS），该评分由腰围（WC）、体重指数（BMI）、血压（BP）和血脂计算得出。四个月后也评估了体重。采用双向（组×时间）方差分析来检验干预效果和维持情况。效应量用于比较各组改善的幅度。在干预期间，所有组的体重和MetS均有显著改善（平均体重减轻 = 4.16千克，P < 0.001）。在随访期间，平均体重继续适度下降，与基线相比平均体重减轻了4.82千克（P < 0.01）。在体重减轻方面没有组间差异，但PAM + GWL组的MetS评分变化显著更大（P = 0.06 - 0.77）。使用PAM导致体重和MetS有显著改善，且在四个月的随访中得以维持。有证据表明，增加GWL有助于改善代谢结果。
