DANCE IN THE TREATMENT OF CHILDHOOD OBESITY: A PROPOSED PROTOCOL

ABSTRACT Introduction: Low levels of daily physical activity is considered to be one of the causes of the exorbitant increase in overweight and obese children, and associated comorbidities. Therefore, it is vital to develop strategies that will be implemented consistently, to improve this situation. Studies have used dance as a resource for training overweight and obese children, but the lack of information about the creation process and its respective stages reduce the possibility of these proposals being effectively applied. Objectives: To describe the steps in the creation of a dance protocol as a training resource, and its effectiveness in improving the health parameters of overweight and obese children. Methods: 30 children (9 ± 1.1 years) underwent training sessions consisting of a five-minute warm-up at 60% HRmax., and four 10-minute sessions at 70% to 80% at HRmax. interspersed with five 2-minute active recovery periods at 60% HRmax. The sessions were carried out three times a week, and lasted 60 minutes each, over a 13-week period. Before and after the training, the body composition, body mass index (BMI), BMI z-score, waist circumference (WC), waist-to-height ratio (WHtR), systolic (SBP) and diastolic (DBP) blood pressure and blood variables were measured. Statistical analysis was performed using a mixed effects regression model. Results: After training with Afro-Brazilian dance, there was a significant reduction (p<0.05) in the BMI z-score and waist-to-height ratio. Conclusion: Afro-Brazilian dance training was a strategy with a positive effect on BMI z-score and waist-to-height ratio in overweight and obese children. Level of evidence IV; Case series.

摘要
引言：每日体力活动水平低下被认为是超重与肥胖儿童数量激增及其相关合并症高发的诱因之一。因此，制定可持续落地的干预策略以改善这一现状至关重要。已有研究将舞蹈作为超重与肥胖儿童的训练干预手段，但现有研究缺乏对其创作流程及各阶段的详细说明，限制了此类方案的有效落地应用。
研究目的：阐明作为训练干预手段的舞蹈方案（dance protocol）的创作步骤，并评估其对超重与肥胖儿童健康指标的改善效果。
研究方法：纳入30名年龄为9±1.1岁的儿童，训练课程包含5分钟的最大心率（HRmax）60%强度热身环节，随后为4组每组10分钟、强度为最大心率70%~80%的训练单元，组间穿插5组每组2分钟的最大心率60%强度主动恢复环节。训练每周开展3次，每次时长60分钟，总干预周期为13周。训练前后，分别测量受试者的身体成分、体质量指数（body mass index, BMI）、BMI z评分、腰围（waist circumference, WC）、腰围身高比（waist-to-height ratio, WHtR）、收缩压（systolic blood pressure, SBP）、舒张压（diastolic blood pressure, DBP）以及血液学指标。统计学分析采用混合效应回归模型完成。
研究结果：接受巴西非裔舞蹈训练后，受试者的BMI z评分与腰围身高比均出现显著降低（p<0.05）。
结论：巴西非裔舞蹈训练可有效改善超重与肥胖儿童的BMI z评分及腰围身高比，是一项颇具应用价值的干预策略。
证据等级：IV级；病例系列研究（case series）。