Sport & Physical Activity Research Centre/Advanced Wellbeing Research Centre, Sheffield Hallam University, Sheffield, UK.
Department of Sport, Health & Exercise Science, University of Hull, Hull, UK.
Ann Phys Rehabil Med. 2021 Nov;64(6):101462. doi: 10.1016/j.rehab.2020.101462. Epub 2021 Oct 26.
Exercise prescription guidelines for individuals undergoing cardiovascular rehabilitation (CR) are often based on heart rate training zones and rating of perceived exertion (RPE). United Kingdom guidelines indicate that patients should exercise at an intensity of RPE 11 to 14.
We aimed to determine the accuracy of this approach by comparing this RPE range with an objectively measured marker of exercise intensity, the ventilatory anaerobic threshold (VAT), and examine whether baseline directly determined cardiorespiratory fitness (CRF) affects the association between VAT and RPE.
Participants underwent a maximal cardiopulmonary exercise test before an 8-week community-based CR programme. Peak oxygen uptake (V̇O) and VAT were recorded, and RPE at the workload at which VAT was identified was recorded. Data were then split into tertiles, based on VO, to determine whether RPE at the VAT differed in participants with low, moderate or higher CRF.
We included 70 individuals [mean (SD) age 63.1 (10.0) years; body mass index 29.4 (4.0) kg/m; 86% male]. At baseline, the mean RPE at the VAT (RPE@VAT) was 11.8 (95% confidence interval 11.0-12.6) and significantly differed between low and high CRF groups (P<0.001). The mean RPE@VAT was 10.1 (8.7-11.5), 11.8 (10.5-13.0), and 13.7 (12.5-14.9) for low, moderate and high CRF groups, respectively.
When using RPE to guide exercise intensity in CR populations, one must consider the effect of baseline CRF. Mean RPEs of ∼10, 12 and 14 correspond to the VAT in low, moderate and higher-fit patients, respectively.
心血管康复（CR）患者的运动处方指南通常基于心率训练区和感知用力程度（RPE）。英国指南表明，患者应在 RPE 11 到 14 的强度下进行运动。
我们旨在通过将此 RPE 范围与客观测量的运动强度标志物——通气无氧阈值（VAT）进行比较来确定这种方法的准确性，并检查基线直接确定的心肺功能（CRF）是否会影响 VAT 和 RPE 之间的关联。
参与者在参加 8 周社区为基础的 CR 计划之前接受了最大心肺运动测试。记录峰值摄氧量（V̇O）和 VAT，并记录在确定 VAT 时的工作量下的 RPE。然后根据 VO 将数据分为三分位数，以确定在 CRF 较低、中等或较高的参与者中，VAT 处的 RPE 是否存在差异。
我们纳入了 70 名个体（平均（标准差）年龄 63.1（10.0）岁；体重指数 29.4（4.0）kg/m；86%为男性）。在基线时，VAT 处的平均 RPE（RPE@VAT）为 11.8（95%置信区间 11.0-12.6），并且在低和高 CRF 组之间存在显著差异（P<0.001）。低、中、高 CRF 组的平均 RPE@VAT 分别为 10.1（8.7-11.5）、11.8（10.5-13.0）和 13.7（12.5-14.9）。
在使用 RPE 指导 CR 人群的运动强度时，必须考虑基线 CRF 的影响。在低、中、高 Fit 患者中，平均 RPE 分别约为 10、12 和 14，分别对应于 VAT。
