Background: Low cardiorespiratory fitness is associated with increased risk of hypertension and atherosclerosis in adults with prehypertension. The purpose of this study was to quantify cardiorespiratory fitness and to examine the utility of supramaximal constant-load verification testing for validating maximal oxygen uptake (VO_2max) attainment in adults with prehypertension. Methods: Eleven adults (four women) with prehypertension (22.5 ± 2.9 y; body mass index (BMI): 24.6 ± 3.2 kg·m²) underwent an incremental exercise test followed 15 min later by a verification test at 105% of maximal work rate on a cycle ergometer. Results: There was no statistical difference in VO₂ between the incremental (2.23 ± 0.54 L·min⁻¹) and verification tests (2.28 ± 0.54 L·min⁻¹; p = 0.180). Only three out of eleven participants had a higher VO₂ during the verification when compared with the incremental test. If the verification test had not been conducted, one participant would have been incorrectly classified as having low cardiorespiratory fitness based on incremental test results alone. Conclusions: Verification testing validates the attainment of VO_2max and can potentially reduce the over-diagnosis of functional impairment (i.e., deconditioning) in adults with prehypertension.

中文翻译：

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高血压前期成年人心肺适应性的量化和验证

背景：心肺适应性低与高血压前期成人高血压和动脉粥样硬化的风险增加有关。这项研究的目的是量化心肺功能，并检查超最大恒定负荷验证测试对验证高血压前期成年人最大摄氧量（VO _2max）的效用。方法：11名成年人（4名妇女）患有高血压（22.5±2.9 y；体重指数（BMI）：24.6±3.2 kg·m ²），进行了增量运动测试，然后在15分钟后进行了最大工作量的105％的验证测试测功机上的速度。结果：增量（2.23±0.54 L·min ^-1）之间的VO ₂没有统计学差异。）和验证测试（2.28±0.54 L·min ^-1 ; p = 0.180）。与增量测试相比，在验证过程中，只有十一分之三的参与者具有较高的VO ₂。如果未进行验证测试，则仅根据递增测试结果就将一个参与者错误地归类为心肺适应性低下。结论：验证测试验证了VO _2max的获得，并可能减少对高血压前期成年人功能障碍（即失调）的过度诊断。