Health Behaviour Change Research Group, Department of Health Sciences, College of Health and Life Sciences, Brunel University London, London UB8 3PH, UK.
Central Bureau for Statistics (CBS), 6401CZ Heerlen, The Netherlands.
Int J Environ Res Public Health. 2020 Dec 23;18(1):28. doi: 10.3390/ijerph18010028.
: Critically testing and integrating theoretical models can aid health promotion research and intervention planning. This study aimed to critically compare and integrate Self-Determination Theory (SDT) and Integrated-Change Model (ICM) for explaining physical activity behaviour. : A dataset was used with Dutch adults, consisting of information on demographics and socio-cognitive and behavioural determinants. There were three measurements over a period of six months, with the baseline sample consisting of 1867 participants. Confirmatory factor analysis was conducted to assess the reliability of the items and their corresponding scales. To examine cognitive pathways, we applied Structural Equation Modelling (SEM). : For SDT, none of the pathways were significant but the model fit was decent (R = 0.20; RMSEA = 0.07; CFI = 0.91). For ICM, the model fit was similar (R = 0.19; RMSEA = 0.07; CFI = 0.73), with many significant pathways, as stipulated by the theory. The integration of STD and ICM constructs revealed similar explained behavioural variance (R = 21%), with no significantly different model fit. : The integration of SDT and ICM added no value as a prediction model. However, the integrated model explains the underlying mechanism of STD constructs, as well as the determinants of attitude, social influences, and self-efficacy. In the context of intervention design, ICM or the integrated model seem most useful as it reveals the stages and pathways to behaviour change.
: 批判性地检验和整合理论模型可以帮助促进健康研究和干预计划。本研究旨在批判性地比较和整合自我决定理论（SDT）和综合变革模型（ICM），以解释身体活动行为。 : 使用包含荷兰成年人的数据集，其中包括人口统计学以及社会认知和行为决定因素的信息。该研究进行了为期六个月的三次测量，基线样本由 1867 名参与者组成。进行验证性因子分析以评估项目及其相应量表的可靠性。为了检验认知途径，我们应用了结构方程模型（SEM）。 : 对于 SDT，没有任何途径是显著的，但模型拟合度还不错（R = 0.20；RMSEA = 0.07；CFI = 0.91）。对于 ICM，模型拟合度相似（R = 0.19；RMSEA = 0.07；CFI = 0.73），符合理论规定，有许多显著途径。SDT 和 ICM 结构的整合揭示了相似的行为变异解释（R = 21％），模型拟合度没有显著差异。 : SDT 和 ICM 的整合作为预测模型没有增加价值。但是，综合模型解释了 STD 结构的潜在机制，以及态度、社会影响和自我效能的决定因素。在干预设计方面，ICM 或综合模型似乎最有用，因为它揭示了行为改变的阶段和途径。
