1 Federal University of Santa Catarina, Florianópolis, Brazil.
2 Federal Institute of Minas Gerais, Belo Horizonte, Brazil.
Health Educ Behav. 2019 Jun;46(3):406-416. doi: 10.1177/1090198118820095. Epub 2019 Jan 13.
This study aimed to evaluate the effectiveness of the VAMOS strategy (Health-Improving Active Life) in improving physical activity (PA), dietary habits, and anthropometric variables of primary health care (PHC) users in Brazil. A randomized controlled community trial was conducted at two units of the Health Academy Program (HAP; a service provided by PHC), which were randomly assigned either to control group (CG) or intervention group (IG). Participants in both groups (CG = 156 and IG = 135) took part in physical activity classes provided by HAP facilities with those in IG also participating in the VAMOS strategy for 12 weeks. This strategy is based on social cognitive theory. The main behavioral constructs addressed were self-efficacy, goal setting, self-monitoring, identification of social support and barriers, and solutions for the identified barriers. Physical activity was measured with accelerometers, and nutritional status was assessed using dietary habits questionnaires and anthropometric measurements. Intention-to-treat analysis revealed that participants in IG increased the daily time of moderate-vigorous PA and the frequency of raw vegetable intake, while the intake of ultra-processed foods was reduced. Weight loss among participants who were classified as overweight/obese at baseline was observed in the intervention group compared to control. These results suggest that the VAMOS strategy was effective in increasing PA, healthy dietary habits, and decreasing weight among PHC users. Therefore, VAMOS could be used as a strategy to strengthen individuals' autonomy regarding healthy choices and improve their overall health.
本研究旨在评估 VAMOS 策略（促进健康的积极生活）在改善巴西初级保健（PHC）使用者的身体活动（PA）、饮食习惯和人体测量学变量方面的有效性。一项随机对照社区试验在两个健康学院计划（HAP）单位进行，这些单位被随机分配到对照组（CG）或干预组（IG）。两组参与者（CG = 156 人，IG = 135 人）参加了 HAP 设施提供的身体活动课程，IG 组还参加了为期 12 周的 VAMOS 策略。该策略基于社会认知理论。主要行为结构包括自我效能、目标设定、自我监测、识别社会支持和障碍以及针对确定障碍的解决方案。身体活动通过加速度计进行测量，营养状况通过饮食习惯问卷和人体测量测量进行评估。意向治疗分析显示，IG 组参与者增加了中等至剧烈 PA 的每日时间和生食摄入的频率，而超加工食品的摄入减少。与对照组相比，基线时超重/肥胖的参与者在干预组体重减轻。这些结果表明，VAMOS 策略在增加 PHC 用户的 PA、健康饮食习惯和减轻体重方面是有效的。因此，VAMOS 可以作为一种策略，增强个人对健康选择的自主权，改善他们的整体健康。
