Paxton Raheem J, Nigg Claudio R, Motl Robert W, McGee Kelly, McCurdy Dana, Matthai Caroline Horwath, Dishman Rod K
Cancer Research Center of Hawaii, Honolulu, HI, USA.
Ann Behav Med. 2008 Jun;35(3):308-18. doi: 10.1007/s12160-008-9035-x. Epub 2008 Jul 8.
BACKGROUND/PURPOSE: Identifying mediators of physical activity change requires measurement instruments that are reliable, valid, and generalizable to multiple populations. Despite continued application of the transtheoretical model (TTM) to the study of physical activity, the structural components of the TTM measurement instruments have been understudied in diverse populations.
A multiethnic sample (N = 700, M (age) = 47, 63% women, 38% Caucasian) of participants living in Hawaii completed TTM measures. The factor validity and measurement equivalence/invariance (ME/I) of decisional balance, barrier self-efficacy, temptations, and processes of change instruments were explored between men, women, age groups, and ethnicities.
RESULTS/CONCLUSIONS: Measurement models of barrier self-efficacy and revised models of temptations and processes of change demonstrated sufficient evidence for ME/I among all subgroups. A revised model of decisional balance demonstrated sufficient evidence for ME/I between genders and among ethnicities, but not among age groups. Future research should examine the stability of these constructs across time.
背景/目的:确定身体活动变化的中介因素需要可靠、有效且能推广到多种人群的测量工具。尽管跨理论模型(TTM)持续应用于身体活动研究,但TTM测量工具的结构组成在不同人群中研究不足。
居住在夏威夷的参与者的一个多民族样本(N = 700,年龄中位数 = 47,63%为女性,38%为白种人)完成了TTM测量。探讨了决策平衡、障碍自我效能感、诱惑和改变过程工具在男性、女性、年龄组和种族之间的因素效度和测量等价性/不变性(ME/I)。
结果/结论:障碍自我效能感的测量模型以及诱惑和改变过程的修订模型在所有亚组中均显示出足够的ME/I证据。决策平衡的修订模型在性别之间和种族之间显示出足够的ME/I证据,但在年龄组之间没有。未来的研究应检验这些构念随时间的稳定性。