Cardiac Rehabilitation Unit, Department of Research and Education, General Hospital Murska Sobota, 9000 Murska Sobota, Slovenia.
Faculty of Health Sciences, University of Primorska, Polje 42, 6310 Izola, Slovenia.
Biosensors (Basel). 2021 Sep 6;11(9):318. doi: 10.3390/bios11090318.
Physical activity (PA) and sedentary behavior (SB) levels in healthy adults are predominately based on self-reporting measures, which generally overestimate PA but underestimate SB. Patients with coronary artery disease (CAD) eligible for cardiac rehabilitation (CR) follow an individualized program; thus, objective assessment of physical performance and regular daily activity is required. This study aimed to compare self-reported and objectively measured PA and SB in patients with CAD prior to out-patient CR. We included 91 patients with CAD and assessed their PA with an accelerometer for 8 days prior to CR, along with the short form of the international physical activity questionnaire. We found that most patients were sedentary (61%, ~8 h/day), and on average performed 63 min/day of moderate-to-vigorous-intensity physical activity (MVPA). Males performed less daily light-intensity physical activity (-5%, = 0.011) and performed more MVPA (+2%, = 0.002) compared to females. Maximal aerobic capacity was significantly associated with MVPA (Spearman rho = 0.483, < 0.001) and MVPA > 10 min bouts (Spearman rho = 0.391, < 0.001). Self-reported measures overestimated MVPA (total MVPA, +108 min/day, < 0.001; MVPA > 10 min bouts, +152 min, < 0.001) and underestimated SB (-174 min/day, < 0.001) compared to objective measures. There was no significant correlation between methods in MVPA (Spearman rho = 0.147, = 0.165)), MVPA > 10 min bouts (Spearman rho = -0.059, = 576), and SB (Spearman rho = 0.139, = 0.187). Quantitative analysis demonstrated the huge proportional bias for MVPA, MVPA > 10 min bouts, and SB. Our findings demonstrate that self-reported physical activity provides inaccurate estimates of MVPA and SB in patients with CAD entering the ambulatory CR. This strongly supports the more objective assessments of daily PA, preferably using an accelerometer.
体力活动（PA）和久坐行为（SB）水平在健康成年人中主要基于自我报告的测量，这些测量通常会高估 PA，但低估 SB。有资格接受心脏康复（CR）的冠状动脉疾病（CAD）患者会遵循个性化的方案；因此，需要对身体表现和日常活动进行客观评估。本研究旨在比较 CAD 患者在门诊 CR 之前自我报告和客观测量的 PA 和 SB。我们纳入了 91 名 CAD 患者，在 CR 之前使用加速度计对他们进行了 8 天的 PA 评估，并评估了他们的国际体力活动问卷简表。我们发现，大多数患者久坐不动（61%，每天约 8 小时），平均每天进行 63 分钟的中高强度体力活动（MVPA）。与女性相比，男性每天的低强度体力活动较少（减少 5%， = 0.011），而进行的 MVPA 较多（增加 2%， = 0.002）。最大有氧能力与 MVPA 显著相关（Spearman rho = 0.483， < 0.001）和 MVPA > 10 分钟（Spearman rho = 0.391， < 0.001）。与客观测量相比，自我报告的测量高估了 MVPA（总 MVPA，每天增加 108 分钟， < 0.001；MVPA > 10 分钟，每天增加 152 分钟， < 0.001）和低估了 SB（每天减少 174 分钟， < 0.001）。MVPA（Spearman rho = 0.147， = 0.165）、MVPA > 10 分钟（Spearman rho = -0.059， = 576）和 SB（Spearman rho = 0.139， = 0.187）之间的方法没有显著相关性。定量分析表明，MVPA、MVPA > 10 分钟和 SB 的比例偏差很大。我们的研究结果表明，自我报告的体力活动对进入门诊 CR 的 CAD 患者的 MVPA 和 SB 提供了不准确的估计。这强烈支持使用加速度计对日常 PA 进行更客观的评估。
