Outcomes between different validated questionnaires to assess the level of physical activity in cardiac patients adhering to a rehabilitation program

Abstract Introduction The International Physical Activity Ques-tionnaire (IPAQ) and Baecke inventory are commonly used in cardiovascular rehabilitation routines. Thus, it is understood that investigations on the equivalence of outcomes between these two tools may be relevant to measure the magnitude of possible reproducibility and correlations between them. Objective To compare in cardiac patients the level of physical activity obtained through the IPAQ and Baecke inventory and correlate outcomes obtained with a 6-minute walk test. Methods In total, 65 heart disease patients included in a cardiovascular rehabilitation program (40 male and 25 female) were included, with a mean age of 65.8 ± 10.5 years. The data were obtained from the application of a standardized form, containing the proposed study objects, which were the IPAQ and Baecke inventory. In addition, data regarding anthropometric measurements (body mass, height, and body mass index - BMI), waist-to-hip ratio, blood pressure, and performance in the 6-minute walk test were measured. Results The main outcomes refer to the weak association between the instruments evaluated, which showed a strong relationship only between free time physical activity (r = 1), while in the other categories and when compared to the 6-minute walk test, the verified agreement was not significant. Conclusion The questionnaires are strongly equivalent only for free time physical activity, in the other categories and when compared to the 6-minute walk test, the agreement was not significant. Thus, based on the results, implementation in clinical practice considering the use of these tools with equivalence is not recommended.

摘要：
引言：国际体力活动问卷（International Physical Activity Questionnaire, IPAQ）与Baecke体力活动量表（Baecke inventory）是心血管康复临床实践中常用的评估工具。因此，探究这两种工具的评估结果等效性，对明确二者的可重复性程度及相关性具有重要研究价值。
研究目的：比较心脏疾病患者通过IPAQ与Baecke量表测得的体力活动水平，并将两种工具的评估结果与6分钟步行试验（6-minute walk test）结果进行相关性分析。
研究方法：本研究共纳入65名参与心血管康复项目的心脏病患者（男性40例，女性25例），平均年龄为65.8±10.5岁。研究数据通过标准化问卷采集，问卷包含本研究的核心评估工具：IPAQ与Baecke量表。此外，本研究还采集了多项人体测量学指标，包括体重、身高、体质量指数（Body Mass Index, BMI）、腰臀比、血压，以及受试者在6分钟步行试验中的运动表现数据。
研究结果：本研究核心结果显示，两种评估工具整体仅呈现弱相关性；仅在闲暇时间体力活动维度二者呈现极强相关（r=1），其余评估维度及与6分钟步行试验的对比均未体现出显著一致性。
研究结论：仅在闲暇时间体力活动的评估中，两种问卷具有较强等效性；其余评估维度及与6分钟步行试验的对比均未体现显著一致性。基于本研究结果，不建议在临床实践中直接等效使用这两种工具。