Abstract：Objective To investigate the effect of motivational interviewing combined with peer participation on obesity management in adolescents. Methods A total of 100 adolescents with simple obesity were randomly divided into traditional management and peer participation groups (n=50 each). The traditional management group received traditional health management. The peer participation group received motivational interviewing performed by psychological consultants combined with peer participation through the entire process in addition to traditional health management. The physical exercise, dietary behavior, differences in body composition parameters, and effect of comprehensive intervention were compared between the two groups after intervention for half a year. Results After the health management for six months, the peer participation group showed better improvements in the control of energy intake, adjustment of dietary structure, adherence to moderate/high intensity exercise, and increase in lean body mass compared with the traditional management group (P<0.05). The peer participation group had a significantly higher attendance rate for guidance and counseling performed by a multidisciplinary team once a week than the traditional management group (89% vs 57%; P<0.05), as well as a significantly higher response rate to health management than the traditional management group (83% vs 43%; P<0.05). Conclusions Motivational interviewing combined with peer participation for obesity management can improve the compliance and the effect of comprehensive intervention in losing weight in adolescents.
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