Seghers Jan, Van Hoecke Ann-Sophie, Schotte Astrid, Opdenacker Joke, Boen Filip
Dept of Kinesiology, KU Leuven, Leuven, Belgium.
J Phys Act Health. 2014 Jan;11(1):18-29. doi: 10.1123/jpah.2011-0445. Epub 2012 Dec 17.
Self-efficacy has been found to be an important precondition for behavioral change in sedentary people. The current study examined the effectiveness and added value of including a 15-minute self-efficacy coaching at the start of a 12-week lifestyle physical activity (PA) program.
Participants were randomly assigned to a standard-intervention group (without additional self-efficacy coaching, N = 116) or extra-intervention group (with additional self-efficacy coaching, N = 111). Body mass index (BMI), cardiovascular fitness, self-reported PA, and self-efficacy beliefs were assessed at baseline and immediately after the intervention period. Perceived adherence to the PA program was assessed postintervention.
At posttest, a significant increase in cardiovascular fitness and decrease in BMI were found in both groups. Significant intervention effects emerged on PA behavior, self-efficacy, and program adherence, in favor of the extra-intervention group. Self-efficacy mediated the intervention effect on program adherence whereas no evidence was found for its role as mediator of PA change.
Adding a 15-minute self-efficacy coaching at the start of a lifestyle PA program is a promising strategy to enhance the intervention effects on PA behavior, self-efficacy beliefs, and program adherence. However, the role of self-efficacy as mediator of the intervention effect on in PA was not fully supported.
自我效能已被发现是久坐人群行为改变的重要前提条件。本研究考察了在为期12周的生活方式体育活动（PA）项目开始时加入15分钟自我效能指导的有效性和附加价值。
参与者被随机分配到标准干预组（无额外自我效能指导，N = 116）或额外干预组（有额外自我效能指导，N = 111）。在基线期和干预期结束后立即评估体重指数（BMI）、心血管健康状况、自我报告的体育活动情况以及自我效能信念。干预后评估对体育活动项目的感知依从性。
在测试后，两组的心血管健康状况均显著改善，BMI均显著降低。在体育活动行为、自我效能和项目依从性方面出现了显著的干预效果，有利于额外干预组。自我效能介导了干预对项目依从性的影响，而未发现其作为体育活动变化中介的证据。
在生活方式体育活动项目开始时加入15分钟自我效能指导是一种有前景的策略，可增强对体育活动行为、自我效能信念和项目依从性的干预效果。然而，自我效能作为干预对体育活动影响的中介作用并未得到充分支持。
