Objective

An increase in psychological flexibility has been found to be associated with health behavior changes. Peer-led interventions have been advantageous in improving physical activity among individuals at health risk. This study aimed to discover whether an ACT-based peer-tutored online intervention can increase self-reported physical activity participation and psychological flexibility among adults with overweight.

Design

The study was a non-randomized longitudinal intervention study. The intervention participants (N = 177) were primary health care clients with overweight. They participated in a 24-month program provided by health services, including three online modules of ACT of six week each, and tutoring by trained peers via five group meetings and four phone calls.

Main outcome measures and results

Physical activity participation was measured with Kasari's FIT index concerning the frequency, intensity and time of the physical activity. Psychological flexibility was measured with AAQ-II, and thought suppression, as a dimension of psychological flexibility, with WBSI. Measures were taken at baseline, and at 6, 12, and 24 months. The statistical analysis was conducted with Mplus to identify latent groups with similar change patterns of physical activity, and to examine differences between the profiles. Two change profiles for physical activity participation were found: Low and High. At baseline in High profile group, physical activity and psychological flexibility were higher and thought suppression was lower than they were in Low profile group, as was expressing other psychological symptoms measured by DASS. During the intervention, physical activity increased significantly only within Low profile (within Cohen's d = .48). Psychological flexibility (AAQ-II) increased within High profile (within Cohen's d = .34), and thought suppression (WBSI) decreased in both profiles (within Cohen's d = .33).

Conclusion

The ACT-based peer-tutored online intervention was promising especially for participants with low physical activity participation.

中文翻译：

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可以接受同伴辅导的心理灵活性训练可以促进超重成年人的体育锻炼吗？

客观的

已经发现，心理灵活性的增加与健康行为的改变有关。同行领导的干预措施有利于改善处于健康风险中的个体的体育锻炼。这项研究旨在发现基于ACT的同伴辅导在线干预是否可以增加超重成年人自我报告的体育活动参与和心理灵活性。

设计

该研究是一项非随机的纵向干预研究。干预参与者（N  = 177）是体重超重的主要医疗服务对象。他们参加了由卫生服务提供的为期24个月的计划，包括三个在线ACT的在线模块，每个模块为期六周，并由经过培训的同伴通过五次小组会议和四个电话进行辅导。

主要结果指标和结果

通过Kasari的FIT指数来衡量体育活动的参与程度，该指数涉及体育活动的频率，强度和时间。心理柔韧性用AAQ-II进行了测量，而思想抑制是心理柔韧性的一个维度，通过WBSI进行了测量。在基线以及第6、12和24个月时采取了措施。用Mplus进行统计分析，以识别出具有相似体育活动变化模式的潜伏群体，并检查轮廓之间的差异。发现了两种参与体育活动的变化曲线：低和高。与低姿态组相比，高姿态组在基线时的身体活动和心理柔韧性较高，思想抑制力较低姿态组低，这是通过DASS测得的其他心理症状的表现。在干预期间，d  = 0.48）。在高姿态下（Cohen的d  = 0.34），心理柔韧性（AAQ-II）增加了，而在两种姿态下的思想抑制（WBSI）都降低了（Cohen d  = 0.33内）。

结论

基于ACT的同伴辅导在线干预非常有前途，特别是对于体育活动参与度较低的参与者而言。