Labudek Sarah, Fleig Lena, Jansen Carl-Philipp, Kramer-Gmeiner Franziska, Nerz Corinna, Becker Clemens, Klenk Jochen, Schwenk Michael
J Aging Phys Act. 2021 Oct 1;29(5):744-752. doi: 10.1123/japa.2020-0296. Epub 2021 Feb 8.
This study examined the applicability of the health action process approach (HAPA) to walking duration in older adults and the added value of extending the HAPA by intrinsic motivation. Self-reports from older adults (N = 309; Mage = 78.7, 70-95 years) regarding activity-related intrinsic motivation and HAPA variables were collected at the baseline of a fall prevention intervention study. Walking duration at ≥3 metabolic equivalents of task was measured for 7 days via body-worn accelerometers. Two structural equation models with walking duration as a manifest outcome were specified. In both models, the model fit was acceptable, but intention and planning were not associated with walking duration. Intrinsic motivation was significantly related to most HAPA variables and walking duration. Variance explained for walking duration was R2 = .14 in the HAPA and R2 = .17 in the extended model. For explaining older adults' walking duration, intrinsic motivation, but not HAPA-based intention and planning, seemed to be important.
本研究考察了健康行动过程方法（HAPA）在老年人步行时长方面的适用性，以及通过内在动机扩展HAPA所带来的附加价值。在一项预防跌倒干预研究的基线阶段，收集了老年人（N = 309；平均年龄78.7岁，70 - 95岁）关于与活动相关的内在动机和HAPA变量的自我报告。通过佩戴在身上的加速度计，对7天内≥3代谢当量任务时的步行时长进行了测量。构建了两个以步行时长为显性结果的结构方程模型。在这两个模型中，模型拟合度均可接受，但意图和计划与步行时长无关。内在动机与大多数HAPA变量及步行时长显著相关。HAPA模型中步行时长的解释方差为R2 = 0.14，扩展模型中为R2 = 0.17。对于解释老年人的步行时长，内在动机似乎很重要，而基于HAPA的意图和计划则不然。
