使用特定步数的智能手机应用程序对身体活动和减肥的长期影响:卡塔尔世界杯8强波胆分析随机对照临床试验%A吉村，荣一%A田尻，Eri %A Michiwaki, ryyota %A松本，Naoyuki %A Hatamoto,Yoichi %A Tanaka,Shigeho %+国家生物医学创新、健康与营养研究所营养与代谢系，东京新宿区富山1-23-1，东京，东京，81 0332035725，eyoshi@nibiohn.go.jp %K步数%K减重%K智能手机应用程序%K步数特定移动应用程序%K体育活动%K中到高强度体育活动%K生活方式干预%K mHealth %K移动应用程序:手机%D 2022 %7 24.10.2022 %9原始论文%J JMIR mHealth Uhealth %G英文%X背景:一些使用智能手机应用程序促进减肥的研究表明，有减肥效果，但没有增加体育活动。然而，到目前为止，智能手机应用程序对减肥和增加身体活动的长期影响还没有得到严格的检验。目的:这项研究的目的是评估使用智能手机应用程序是否会增加身体活动和减轻体重。方法:在这项平行随机临床试验中，2018年4月至2019年6月招募的参与者按同等比例随机分为智能手机应用程序组(n=55)或对照组(n=54)。使用意向治疗方法分析了2019年12月至2021年11月的数据。在干预之前，两组都进行了一次时长一小时的关于减肥指导和增加体育活动的讲座。两组参与者都被要求在干预开始后每天至少起床一次后立即称体重。研究人员每月都会发送电子邮件，建议两组参与者如何减肥和增加体育锻炼，以保持或增加动力。 Participants in the smartphone app group were instructed to open the app at least once a day to check their step count and rank. The primary outcome was daily accelerometer-measured physical activity (step count) and the secondary outcome was body weight. Since there was a significant difference in the wear time of the accelerometer depending on the intervention period (P<.001), the number of steps and moderate-to-vigorous physical activity were also evaluated per wear time. Results: The mean age of the 109 participants in this study was 47 (SD 8) years. At baseline, the mean daily total steps were 7259 (SD 3256) steps per day for the smartphone app group and 8243 (SD 2815) steps per day for the control group. The difference in the step count per wear time between preintervention and postintervention was significantly different between the app group and the control group (average difference [95% CI], 65 [30 to 101] steps per hour vs –9 [–56 to 39] steps per hour; P=.042). The weight loss was –2.2 kg (SD –3.1%) in the smartphone app group and –2.2 kg (SD –3.1%) in the control group, with no significant difference between the groups. In addition, when divided into weekdays (Monday through Friday) and weekends (Saturday and Sunday), there was a significant interaction between step counts (P=.004) and MVPA (P=.003) during the intervention, with the app group showing higher interaction on weekends than the control group. Conclusions: In this trial, the group with the smartphone app intervention showed increased physical activity, especially on weekends. However, this increased physical activity did not lead to increased weight loss. Trial Registration: University Hospital Medical Information Network UMIN000033397; https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000037956 %M 36279159 %R 10.2196/35628 %U https://mhealth.www.mybigtv.com/2022/10/e35628 %U https://doi.org/10.2196/35628 %U http://www.ncbi.nlm.nih.gov/pubmed/36279159