Division of Physical Therapy Education, University of Nebraska Medical Center, Omaha, Nebraska, USA.
J Strength Cond Res. 2012 Jun;26(6):1701-7. doi: 10.1519/JSC.0b013e318234e84c.
The purpose of this study was to assess the consistency of the counting talk test (CTT) method for estimating exercise intensity across various modes of exercise in healthy young adults. Thirty-six individuals completed the study, which required participation in 3 separate sessions within a 2-week time period. During the first session, the individuals completed a maximal effort treadmill test from which each individual's heart rate reserve (HRR) was calculated. During the second and third sessions, the subjects participated in 2 modes of exercise in each session for a total of 4 different modes of exercise. The individuals exercised at 40% HRR, 50% HRR, 60% HRR, 75% HRR, and 85% HRR. The heart rate (HR), CTT, and rating of perceived exertion (RPE) were recorded at each workload. Based on the individual's resting CTT (CTT(rest)), the %CTT for each exercise stage was then calculated. Pearson correlations demonstrated moderate to good correlations between the CTT and HRR methods and the CTT and RPE methods for estimating exercise intensity. This study found that for the individuals with CTT(rest) <25, moderate to vigorous intensity exercise as recommended by the American College of Sports Medicine HRR guidelines could be achieved by exercising at a level of 40-50% CTT(rest). Individuals with a CTT(rest) ≥25, exercising at a level of 30-40% CTT(rest) would place them in the moderate to vigorous exercise intensity range. A high degree of reliability was demonstrated using the CTT method across the various modes of aerobic exercise. As such, independent of the exercise mode, the CTT was found to be an easy and consistent method for prescribing moderate to vigorous aerobic exercise intensity.
本研究旨在评估计数谈话测试（CTT）方法在健康年轻成年人中评估不同运动方式运动强度的一致性。36 名个体完成了该研究，该研究要求在 2 周内进行 3 次单独的测试。在第一次测试中，个体进行了最大努力的跑步机测试，从中计算出每个个体的心率储备（HRR）。在第二次和第三次测试中，个体在每个测试中参与 2 种运动模式，总共进行了 4 种不同的运动模式。个体在 40%HRR、50%HRR、60%HRR、75%HRR 和 85%HRR 下进行运动。在每个工作负荷下记录心率（HR）、CTT 和感知用力程度（RPE）。根据个体的静息 CTT（CTT(rest)），然后计算出每个运动阶段的 CTT%。Pearson 相关性表明，CTT 和 HRR 方法以及 CTT 和 RPE 方法在估计运动强度方面具有中等至良好的相关性。本研究发现，对于 CTT(rest) <25 的个体，根据美国运动医学学院 HRR 指南推荐的中等至剧烈强度运动可以通过 40-50%CTT(rest) 的运动水平来实现。对于 CTT(rest)≥25 的个体，通过 30-40%CTT(rest) 的运动水平可以使他们处于中等至剧烈运动强度范围。在各种有氧运动模式中，CTT 方法表现出高度的可靠性。因此，无论运动模式如何，CTT 被发现是一种简单且一致的方法，可以用于规定中等至剧烈的有氧运动强度。
