Mediators of physical activity maintenance during a 12-month randomized controlled trial among breast Cancer survivors.
Mediators of physical activity maintenance during a 12-month randomized controlled trial among breast Cancer survivors.
复制标题
在乳腺癌幸存者中进行的一项为期 12 个月的随机对照试验中身体活动维持的中介因素。
DOI：
10.1007/s10865-023-00402-0
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发表时间：
2023
影响因子：
3.1
通讯作者：
Mitchell,Sheryl
中科院分区：
文献类型：
--
作者：
Pinto,BernardineM;Dunsiger,ShiraI;Kindred,MadisonM;Mitchell,Sheryl
目的：探讨理论结构，作为中介的干预措施，中度到剧烈的体力活动（MVPA）的维护之间的乳腺癌survivers.Method：161幸存者被随机分为3组：Reach Plus，Reach Plus消息或Reach Plus电话。所有参与者都接受了由志愿者教练提供的为期3个月的基于理论的干预。在第4-9个月期间，所有参与者监测他们的MVPA并收到反馈报告。此外，Reach Plus Message每周收到短信/电子邮件，Reach Plus Phone每月收到教练的电话。每周MVPA分钟和理论结构的评估（自我效能，社会支持，身体活动[PA]享受和PA障碍）在基线，3，6，9和12个月获得分析：使用多个中介分析与产品的系数方法，我们研究了机制与组间差异随着时间的推移，每周MVPA分钟。在6个月（ab= 16.99）和9个月（ab= 27.45）时，Reach Plus消息与Reach Plus的自我效能介导效应;在6个月（ab= 4.86）、9个月（ab= 14.30）和12个月（ab= 6.18）时，社会支持介导效应。Reach Plus Phone与Reach Plus在6（ab= 18.76）、9（ab= 28.93）和12 M（ab= 18.18）时的自我效能介导效应。在6岁时，Reach Plus电话与Reach Plus消息的社会支持介导效应（ab=-5.50）和9 M（ab=-13.20）; 12 M时PA享受介导的效应（ab=-3.63）。结论：PA维持工作应侧重于加强乳腺癌幸存者的自我效能和获得社会支持。NCT 02694640（2016年2月26日）。
Purpose: To explore the theoretical constructs that functioned as mediators of interventions for moderate-to-vigorous physical activity (MVPA) maintenance among breast cancer survivors.Method: 161 survivors were randomized into 3 groups: Reach Plus, Reach Plus Message or Reach Plus Phone. All participants received a 3-month theory-based intervention delivered by volunteer coaches. During months 4–9, all participants monitored their MVPA and received feedback reports. Additionally, Reach Plus Message received weekly text/email messages and Reach Plus Phone received monthly calls from their coaches. Assessments of weekly MVPA minutes and theoretical constructs (self-efficacy, social support, physical activity [PA] enjoyment and PA barriers) were obtained at baseline, 3, 6, 9 and 12-months.Analyses: Using a multiple mediator analysis with a product of coefficients approach, we examined mechanisms associated with between-group differences over time in weekly MVPA minutes.Results: Self-efficacy mediated effects of Reach Plus Message vs. Reach Plus at 6 (ab= 16.99) and 9 M (ab= 27.45); social support mediated effects at 6 (ab= 4.86), 9 (ab= 14.30) and 12 M (ab= 6.18). Self-efficacy mediated effects of Reach Plus Phone vs. Reach Plus at 6 (ab= 18.76), 9 (ab= 28.93) and 12 M (ab= 18.18). Social support mediated effects of Reach Plus Phone vs. Reach Plus Message at 6 (ab=-5.50) and 9 M (ab=-13.20); PA enjoyment mediated effects at 12 M (ab=-3.63).Conclusions: PA maintenance efforts should focus on strengthening breast cancer survivors’ self-efficacy and obtaining social support.The trial was registered at ClinicalTrials.Gov: NCT02694640 (Feb. 26, 2016).