School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, British Columbia, Canada.
Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada.
Child Obes. 2021 Jan;17(1):58-67. doi: 10.1089/chi.2020.0236. Epub 2020 Dec 23.
The purpose of this study was to evaluate the effectiveness of a 10-week blended family-based childhood obesity management program, relative to a wait-list control, in improving child body mass index (BMI) z-scores, child lifestyle behaviors, parental support for healthy eating and physical activity, and self-regulation for healthy eating and physical activity support. This study was registered as a randomized wait-listed controlled trial; however, due to low recruitment and program delivery logistics, this study transitioned into a quasi-experimental design. Families with children 8-12 years of age with a BMI ≥85th percentile for age and sex were recruited (October 2018 to March 2019) in British Columbia, Canada. The intervention provided families 10 weeks of in-person and online support on improving lifestyle behaviors. Children's BMI z-scores were not significantly changed. Intervention group significantly improved their days of moderate-to-vigorous physical activity relative to control (0.75 ± 1.5; < 0.01; ηp = 0.15); however, child dietary behaviors were not significantly changed. Relative to control, intervention group showed significant improvements in parental support for healthy eating (0.13 ± 0.36; < 0.05; ηp = 0.06) and physical activity (1.0 ± 1.6; < 0.05; ηp = 0.09) and self-regulation for healthy eating (2.0 ± 3.5; < 0.01; ηp = 0.11) and physical activity support (2.0 ± 3.2; < 0.05; ηp = 0.28). Preliminary evidence showed that the intervention was not effective in improving child BMI z-scores, but it was effective in promoting children's physical activity and parents' support behaviors. A longer study period may be required to change BMI z-scores. Clinical Trial Registration number: NCT03643341.
本研究旨在评估一项为期 10 周的混合家庭为基础的儿童肥胖管理计划的有效性，与等待名单对照相比，该计划在改善儿童体重指数（BMI）z 评分、儿童生活方式行为、父母对健康饮食和身体活动的支持，以及健康饮食和身体活动支持的自我调节方面。这项研究作为一项随机等待对照试验进行注册；然而，由于招募人数低和项目交付后勤问题，这项研究转为准实验设计。从 2018 年 10 月至 2019 年 3 月，在加拿大不列颠哥伦比亚省招募了年龄在 8-12 岁、BMI 超过年龄和性别的 85 百分位的儿童及其家庭。该干预措施为家庭提供了 10 周的改善生活方式行为的面对面和在线支持。儿童的 BMI z 评分没有显著变化。干预组与对照组相比，中度至剧烈身体活动的天数显著增加（0.75±1.5；<0.01；ηp=0.15）；然而，儿童的饮食行为没有显著变化。与对照组相比，干预组在父母对健康饮食的支持（0.13±0.36；<0.05；ηp=0.06）和身体活动（1.0±1.6；<0.05；ηp=0.09）以及健康饮食的自我调节（2.0±3.5；<0.01；ηp=0.11）和身体活动支持（2.0±3.2；<0.05；ηp=0.28）方面均有显著改善。初步证据表明，该干预措施在改善儿童 BMI z 评分方面无效，但在促进儿童身体活动和父母支持行为方面有效。可能需要更长的研究时间来改变 BMI z 评分。临床试验注册号：NCT03643341。
