杂志文章@ 2291- 5222% I JMIR出版物有或没有每周行为卡塔尔世界杯8强波胆分析支持邮件的可穿戴式活动跟踪器干预，以促进超重或肥胖女性的身体活动:随机对照试验%A Black,Melissa %A Brunet,Jennifer %+渥太华大学健康科学学院人类动力学学院，125大学私立，渥太华，ON, K1N6N5，加拿大，1 6135625800 ext 3068, jennifer.brunet@uottawa.ca %K行为改变%K动机%K肥胖%K体育活动%K女性%K手机%D 2021 %7 16.12.2021 %9原始论文%J JMIR Mhealth Uhealth %G英语%X背景:体育活动(PA)在对抗当前肥胖流行方面发挥着根本作用;然而，大多数超重或肥胖的女性通常都不运动。可穿戴活动追踪器干预可以帮助提高这一人群的PA水平。用行为支持邮件补充这些干预措施可能会进一步提高其有效性，但这仍有待证实。目的:本研究旨在确定在可穿戴式活动跟踪器干预中添加行为支持邮件，与仅使用可穿戴式活动跟踪器干预和对照条件相比，是否可以进一步提高超重或肥胖女性的PA水平。方法:BMI≥25 kg/m2且不符合加拿大PA有氧和力量训练指南的女性随机分为3组中的1组。第一组每周收到6封行为支持电子邮件，一个可穿戴式活动追踪器和一份加拿大PA指南。第2组收到一个可穿戴式活动跟踪器和一份加拿大PA指南，第3组(对照组)收到一份加拿大PA指南。 Self-reported data for walking and moderate to vigorous intensity PA were collected preintervention (week 0; prerandomization), postintervention (7 weeks postrandomization), and at follow-up (21 weeks postrandomization) and analyzed as metabolic equivalent of task minutes per week. In addition, potential mechanisms of behavior change (ie, basic psychological needs satisfaction and motivational regulations) were assessed for within- and between-group differences at all 3 time points. Data were analyzed using nonparametric statistical tests. Results: A total of 49 women were recruited; data from 47 women (mean age 37.57 years, SD 11.78 years; mean BMI 31.69 kg/m2, SD 5.97 kg/m2) were available for analysis. Group 1 reported a significant increase in walking from preintervention to postintervention (χ22=7.5; P=.02) but not in moderate to vigorous intensity PA (P=.24). Group 1 also reported significant increases in perceptions of competence from preintervention to follow-up (χ22=7.6; P=.02) and relatedness from preintervention to follow-up (χ22=8.7; P=.005). Increases in perceived autonomy were observed for group 2 (χ22=7.0) and group 3 (χ22=10.6). There were no significant changes in the motivational regulations within the groups. The difference between the groups was not significant for any outcome variable. Conclusions: The results suggest that adding behavioral support emails to a wearable activity tracker intervention may help to increase time spent walking and perceptions of competence and relatedness for PA among women who are overweight or obese. Trial Registration: ClinicalTrials.gov NCT03601663; http://clinicaltrials.gov/ct2/show/NCT03601663 %M 34927590 %R 10.2196/28128 %U https://mhealth.www.mybigtv.com/2021/12/e28128 %U https://doi.org/10.2196/28128 %U http://www.ncbi.nlm.nih.gov/pubmed/34927590