Klein Buendel, Golden, CO, USA.
University of Southern California, Keck School of Medicine, Department of Population and Public Health, Los Angeles, CA, USA.
J Sports Sci. 2023 Jan;41(1):45-55. doi: 10.1080/02640414.2023.2195228. Epub 2023 Mar 25.
Despite overwhelming adoption of wearable fitness trackers (WFT), it is unclear if they affect physical activity (PA) engagement or PA motivation. We hypothesized that combining a WFT with an effective intervention, motivational interviewing (MI), would positively influence both motivation and PA. A 12-week randomized controlled trial was conducted in 40 adults who did not meet PA recommendations. The four conditions were: a PA education (Educational control, = 10), a WFT (WFT, = 10), bi-weekly MI sessions (MI, = 10), or both interventions (WFT+, = 10). Motivation and PA were measured through an online survey and actigraphy pre- and post-intervention. Both the WFT+ and MI groups improved autonomous forms and decreased controlled forms of motivation. They also had higher basic psychological needs scores when compared to the Education group post-intervention. We detected no changes in PA. High autonomous motivation at baseline predicted higher post-intervention PA in the WFT+ group but predicted lower post-intervention PA in the WFT group. Results suggests that MI alone or with a WFT can improve basic psychological needs and autonomous forms of motivation for PA, but not PA participation. Individual differences in motivation at baseline may moderate the effect of a WFT on PA. This study was registered at clinicaltrials.gov (NCT490014).
尽管可穿戴健身追踪器（WFT）已被广泛采用，但尚不清楚它们是否会影响身体活动（PA）的参与度或 PA 的动机。我们假设将 WFT 与有效的干预措施——动机性访谈（MI）相结合，将积极影响动机和 PA。本研究在 40 名未达到 PA 建议的成年人中进行了为期 12 周的随机对照试验。四种条件为：PA 教育（教育对照组，n=10）、WFT（n=10）、每两周进行一次 MI 课程（MI 组，n=10）或同时进行两种干预（WFT+组，n=10）。动机和 PA 通过在线调查和活动记录仪在干预前后进行测量。WFT+组和 MI 组的自主动机形式都有所提高，而控制动机形式则有所下降。与教育组相比，干预后他们的基本心理需求评分也更高。我们没有发现 PA 有任何变化。较高的自主动机基线预测 WFT+组在干预后的 PA 更高，但预测 WFT 组在干预后的 PA 更低。结果表明，MI 单独或与 WFT 结合使用可以提高 PA 的基本心理需求和自主动机形式，但不能提高 PA 的参与度。基线时动机的个体差异可能会调节 WFT 对 PA 的影响。本研究已在 clinicaltrials.gov（NCT049014）注册。
