School of Education, University of Newcastle, Callaghan, NSW, Australia.
Ann Behav Med. 2010 Oct;40(2):138-49. doi: 10.1007/s12160-010-9193-5.
The transtheoretical model's (TTM's) ability to predict physical activity stage transitions that incorporates all social-cognitive constructs from the original model has not been conducted among adults with diabetes. The purpose of this study was to test the capacity of the TTM for predicting physical activity stage transitions among adults (≥18 years of age) with type 1 (N = 517) or type 2 (N = 1,157) diabetes over 6 months. Participants were identified by a random-digit dialing telephone protocol through the Alberta Diabetes Registry. Assessments of TTM's stage of physical activity behavior change, self-efficacy, pros and cons, cognitive Processes of Change, and behavioral Processes of Change at baseline (time 1) and 6 months (time 2) were assessed by questionnaire. Over this time period, participants were categorized as having regressed (moved back at least one stage), remained (no stage change), or progressed (moved forward at least one stage). Baseline TTM constructs were analyzed for their ability to predict transition over 6 months. Moderate support for the TTM constructs in predicting physical activity stage transitions was found. Self-efficacy, pros, and behavioral Processes of Change hold relatively strong predictive power for stage progression over 6 months, with very few differences found between the types 1 and 2 diabetes groups. The capacity of the model in predicting stage transition is partially supported. When promoting physical activity among adults with diabetes, targeting self-efficacy, pros, and cognitive Processes of Change may favorably support stage transition in the pre-action stages, while strategies to enhance the behavioral Processes of Change may be appropriate for the Action and Maintenance stages.
跨理论模型（TTM）能够预测包含原始模型所有社会认知结构的身体活动阶段转变，但尚未在糖尿病成人中进行过研究。本研究的目的是检验 TTM 在预测 1 型（N=517）或 2 型（N=1157）糖尿病成人 6 个月内身体活动阶段转变的能力。通过阿尔伯塔糖尿病登记处的随机数字拨号电话协议确定参与者。在基线（第 1 次）和 6 个月（第 2 次）时通过问卷调查评估 TTM 的身体活动行为改变阶段、自我效能、赞成和反对、认知改变过程和行为改变过程。在此期间，将参与者分为回归组（至少向后移动一个阶段）、保持组（无阶段变化）或进展组（至少向前移动一个阶段）。分析基线 TTM 结构以预测 6 个月内的转变。结果发现，TTM 结构对预测身体活动阶段转变具有中等支持。自我效能、赞成和行为改变过程在 6 个月内对阶段进展具有相对较强的预测能力，在 1 型和 2 型糖尿病组之间发现的差异很小。该模型在预测阶段转变方面的能力得到了部分支持。在促进糖尿病成人的身体活动时，针对自我效能、赞成和认知改变过程可能有利于支持前行动阶段的阶段转变，而增强行为改变过程的策略可能适合行动和维持阶段。
