Fábio de Freitas, Mariana R Zago, Maria Ângela Antônio, Maria Ângela Bellomo Brandão, António Videira-Silva
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引用次数: 0
Abstract
Background: High-intensity Interval Training (HIIT) has emerged as an effective strategy in the management of adolescents with obesity, including delivery through real-time remote models. What remains unclear is whether these clinical benefits are sustained once direct professional supervision is discontinued. This study aimed to analyze the effects of a 6-month, real-time, remotely supervised HIIT program, integrated into a multi-component clinical obesity treatment on post-intervention and 12-month follow-up outcomes after sessions were discontinued. Furthermore, the association between motivation dimensions and program engagement was explored.
Methods: A quasi-experimental study involving 96 adolescents with obesity (BMI z-score ≥ 2) was assigned to an Experimental Group (EG; n = 50) and a Control Group (CG; n = 46). The EG completed a remote-supervised HIIT program (∼20 min, 4 × /week) alongside standard care, whereas the CG received only standard care. Engagement was categorized into three levels based on the duration of participation. EG participants were included in analyses if they attended at least 80% of the training sessions during the intervention period. Assessments were conducted at baseline, 6 months, and 12 months.
Results: Group-by-time interaction showed reductions in the EG for BMI (β = 2.1 kg/m2, p < 0.001), BMI z-score (β = 0.2, p = 0.002), and WC (β = 3.3 cm, p = 0.004) post-intervention. A significant interaction was observed for water intake (β = 0.3 L/day, p = 0.042). Within EG, improvements were found in flexibility (β = 4.1 cm, p < 0.001) and muscular endurance (β = 3.2reps, p = 0.016). No significant changes occurred during the follow-up period. Appearance motivation was negatively associated with engagement (rp = -0.29, p = 0.049).
Conclusion: The real-time, remotely supervised HIIT program integrated into a multi-component clinical obesity treatment was an effective approach to promote weight loss and improve physical fitness, with effects sustained for at least 12 months of follow-up. Appearance-driven goals may be associated with lower program engagement.
背景：高强度间歇训练（HIIT）已成为管理青少年肥胖的有效策略，包括通过实时远程模式进行。目前尚不清楚的是，一旦停止直接的专业监督，这些临床益处是否能持续。本研究旨在分析一个6个月、实时、远程监督的HIIT项目，整合到一个多成分的临床肥胖治疗中，对干预后和治疗结束后12个月随访结果的影响。此外，还探讨了动机维度与项目参与之间的关系。方法：将96例BMI z-score≥2的肥胖青少年分为实验组（EG, n = 50）和对照组（CG, n = 46）进行准实验研究。EG组在标准治疗的同时完成了远程监督的HIIT项目（约20分钟，4次/周），而CG组只接受标准治疗。根据参与时间的长短，参与度被分为三个级别。EG参与者如果在干预期间参加了至少80%的培训课程，则被纳入分析。在基线、6个月和12个月时进行评估。结果：分组时间交互作用显示干预后BMI EG （β = 2.1 kg/m2, p β = 0.2, p = 0.002）和WC （β = 3.3 cm, p = 0.004）降低。摄水量显著交互作用（β = 0.3 L/d, p = 0.042）。在EG中，柔韧性得到改善（β = 4.1 cm, p β = 3.2rep, p = 0.016）。随访期间无明显变化。外观动机与敬业度呈负相关（r p = -0.29, p = 0.049）。结论：将实时、远程监督的HIIT项目整合到多组分临床肥胖治疗中是一种促进体重减轻和改善身体素质的有效方法，其效果持续至少12个月的随访。外观驱动的目标可能与较低的项目参与度相关。试验注册：巴西临床试验注册中心（ReBEC）： RBR-35hyxxv。
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