Brunet Jennifer, Burke Shaunna M, Sabiston Catherine M
School of Human Kinetics, University of Ottawa, Canada.
Faculty of Biological Sciences, University of Leeds, Canada.
Psychooncology. 2013 Oct;22(10):2245-52. doi: 10.1002/pon.3287. Epub 2013 Apr 18.
In this study, changes in motivational regulations in women following treatment for breast cancer were described. Changes in motivational regulations as predictors of subsequent change in light and moderate-to-vigorous physical activity (PA) and affect were also examined.
Women [n = 150; M(age) = 54.41 (SD = 10.87) years] completed self-report questionnaires and wore an accelerometer for 7 days at Time 1 [M = 3.94 (SD = 3.08) months following primary treatment], as well as 3 (Time 2) and 6 (Time 3) months later. Data were analyzed using repeated-measures analysis of variance and path analysis using residual change scores.
Identified regulation and self-determined motivation (i.e., combined intrinsic motivation and identified regulation) scores decreased over time (p < 0.05). In the path model [χ(2)(4) = 5.66, p = 0.22, root mean square error of approximation = 0.05 (90% CI: 0.0; 0.15), comparative fit index = 0.99, standardized root mean square of the residuals = 0.03], ΔTime(1-2) in external regulation was associated with ΔTime(2-3) in positive affect (β = -0.16), ΔTime(1-2) in introjected (β = 0.25) and amotivation (β = 0.19) were related to ΔTime(2-3) in negative affect, and ΔTime(1-2) in self-determined motivation was related to ΔTime(2-3) in positive affect (β = 0.40) and moderate-to-vigorous PA (β = 0.21).
Changes in motivational regulations were related to changes in PA and affect in the aftermath of breast cancer. Given the benefits of self-determined motivation, additional research is needed to develop and test interventions aimed at enhancing this type of motivation.
本研究描述了乳腺癌治疗后女性动机调节的变化。还研究了动机调节的变化作为随后轻度和中度至剧烈身体活动（PA）及情感变化预测因素的情况。
女性[n = 150；平均年龄（M(age)）= 54.41（标准差（SD）= 10.87）岁]在第1阶段[初次治疗后平均（M）= 3.94（标准差（SD）= 3.08）个月]完成了自我报告问卷，并佩戴加速度计7天，以及在3个月后（第2阶段）和6个月后（第3阶段）再次进行。使用重复测量方差分析和基于残差变化分数的路径分析对数据进行分析。
认同调节和自我决定动机（即内在动机与认同调节的组合）得分随时间下降（p < 0.05）。在路径模型中[卡方（χ(2)(4)）= 5.66，p = 0.22，近似误差均方根 = 0.05（90%置信区间：0.0；0.15），比较拟合指数 = 0.99，残差的标准化均方根 = 0.03]，外部调节的Δ时间（1 - 2）与积极情感的Δ时间（2 - 3）相关（β = -0.16），内摄调节（β = 0.25）和无动机（β = 0.19）的Δ时间（1 - 2）与消极情感的Δ时间（2 - 3）相关，自我决定动机的Δ时间（1 - 2）与积极情感的Δ时间（2 - 3）（β = 0.40）和中度至剧烈PA的Δ时间（2 - 3）（β = 0.21）相关。
乳腺癌治疗后，动机调节的变化与PA及情感的变化相关。鉴于自我决定动机的益处，需要开展更多研究来开发和测试旨在增强这类动机的干预措施。
