ABSTRACT

The purpose of this study is to investigate the explanatory value of the theory of planned behavior (TPB) to predict the intentions of physical activity in older adults with lower-extremity osteoarthritis. This is a cross-sectional study with a sample of 41 older adults (50+ years) with lower-extremity osteoarthritis. The instruments used were as follows: International Physical Activity Questionnaire, Knee Injury and Osteoarthritis Outcome Score, Hip disability and Osteoarthritis Outcome Score and TPB exercise scale. The Western Ontario and McMaster Osteoarthritis Index scores were calculated and used in the statistical analysis.

Results revealed that attitudes and perceived behavioral control were statistically significant predictors of physical activity intentions. Attitudes and perceived behavioral control accounted for 46% of the variance in physical activity intentions. Subjective norms did not evidence a significant effect. Knowledge of the predictors of physical activity intentions can guide researchers and clinicians in the development of interventions that are tailored to the personal characteristics and needs of older adults with chronic diseases.

摘要

本研究的目的是探讨计划行为理论（TPB）在预测患有下肢骨关节炎的老年人身体活动意图方面的解释价值。这是一项横断面研究，样本为 41 名患有下肢骨关节炎的老年人（50 岁以上）。使用的工具如下：国际体力活动问卷、膝关节损伤和骨关节炎结果评分、髋关节残疾和骨关节炎结果评分以及 TPB 运动量表。计算了西安大略和麦克马斯特骨关节炎指数评分并将其用于统计分析。

结果表明，态度和感知的行为控制是身体活动意图的统计学显着预测因子。态度和感知行为控制占体育活动意图差异的 46%。主观规范没有证明有显着影响。了解身体活动意图的预测因素可以指导研究人员和临床医生制定适合患有慢性病的老年人的个人特征和需求的干预措施。