Department of Nutrition and Food Sciences, University of Vermont, Burlington, Vermont, USA.
Department of Preventive Medicine, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA.
Obesity (Silver Spring). 2019 Mar;27(3):380-384. doi: 10.1002/oby.22382.
Dietary self-monitoring is consistently related to both short- and long-term weight loss. The purpose of this study was to quantify the time spent and the daily frequency of self-monitoring necessary for weight-loss success.
Participants in a 24-week, online, behavioral weight-control intervention recorded daily dietary intake using a Web-based dietary analysis program. Time spent self-monitoring and frequency of dietary journal page access were captured. Weight loss (kilograms) and the proportion of participants losing ≥ 5% and ≥ 10% of baseline weight were assessed at 6 months.
Participants (n = 142; BMI 35.8 kg/m ; 90.8% female; 23.2% African American) spent an average of 23.2 minutes per day self-monitoring in month 1 and 14.6 minutes in month 6. For those still recording any minutes self-monitoring by month 6 (65.5%), there were no significant differences in time spent based on weight loss; however, those losing either ≥ 5% or ≥ 10% logged in to the journal Web page significantly more times per day (1.6 vs. 2.4, P < 0.001 for < 5% vs. ≥ 5%; 1.7 vs. 2.7, P < 0.001 for < 10% vs. ≥ 10%).
The frequency of self-monitoring is significantly related to weight loss, with the time needed to be successful diminishing during the intervention.
饮食自我监测与短期和长期减肥均密切相关。本研究旨在量化成功减肥所需的自我监测时间和每日频率。
参加为期 24 周的在线行为体重控制干预的参与者使用基于网络的膳食分析程序记录每日膳食摄入量。记录自我监测时间和每日饮食记录访问频率。在 6 个月时评估体重减轻（千克）以及体重减轻≥5%和≥10%基线体重的参与者比例。
参与者（n=142；BMI 35.8kg/m；90.8%为女性；23.2%为非裔美国人）在第 1 个月和第 6 个月平均每天花费 23.2 分钟和 14.6 分钟进行自我监测。对于那些在第 6 个月仍记录任何自我监测分钟数的人（65.5%），基于体重减轻，花费的时间没有显著差异；然而，那些体重减轻≥5%或≥10%的人每天登录到日记网页的次数明显更多（<5%与≥5%相比，1.6 与 2.4，P<0.001；<10%与≥10%相比，1.7 与 2.7，P<0.001）。
自我监测的频率与体重减轻显著相关，在干预过程中，成功所需的时间会减少。
