Green Griffin K, Stone Whitley J, Tolusso Danilo V, Schafer Mark A, Lyons T Scott
School of Kinesiology, Recreation & Sport, Western Kentucky University, Bowling Green, KY, USA.
Department of Kinesiology, University of North Alabama, Florence, AL, USA.
Int J Exerc Sci. 2023 Oct 1;16(4):1257-1268. doi: 10.70252/MWVS5696. eCollection 2023.
The Bruce and Astrand treadmill protocols are commonly utilized when assessing maximal oxygen consumption (VO). However, the steep grade implemented in the protocols often leads to localized muscular fatigue, potentially causing participants prematurely to terminate the test prior to reaching their true VO. The purpose of this study was to evaluate a Novel VO protocol that may be better suited for young, apparently healthy populations. The Novel protocol starts at a higher speed and lower initial grade to limit lower extremity fatigue. Fifteen participants performed the Bruce, Astrand, and Novel protocols with the following maximal values recorded from each: VO, maximal ventilation (VE), respiratory exchange ratio (RER), heart rate (HR), rating of perceived exertion (RPE) and time to exhaustion (TTE). The Novel protocol displayed substantial agreement with both criterion protocols. Mean absolute percent error (MAPE) was less than 10% indicating that the Novel protocol is a valid measurement for VO values. Bland-Altman analysis revealed that the Novel protocol exhibited a low degree of bias, with tight limits of agreement when compared to the Bruce (bias ±95% LOA = 0.824 ± 3.163) and Astrand protocols (-0.153 ± 3.528) for VO. A paired samples -test revealed no significant differences between Novel and criterion protocols for VO. Paired samples -tests revealed that the Novel protocol had significantly lower TTE when compared to the Bruce and Astrand protocols and produced similar VO values to that of the Bruce and Astrand. The Novel protocol may be considered a valid and time-efficient protocol.
在评估最大摄氧量（VO₂）时，通常会采用布鲁斯（Bruce）和阿斯兰德（Astrand）跑步机测试方案。然而，这些方案中实施的陡坡往往会导致局部肌肉疲劳，可能使参与者在达到其真正的VO₂之前过早终止测试。本研究的目的是评估一种可能更适合年轻、看似健康人群的新型VO₂测试方案。该新型方案以更高的速度和更低的初始坡度开始，以限制下肢疲劳。15名参与者进行了布鲁斯、阿斯兰德和新型测试方案，并记录了以下各项的最大值：VO₂、最大通气量（VE）、呼吸交换率（RER）、心率（HR）、主观用力程度分级（RPE）和疲劳时间（TTE）。新型测试方案与两种标准测试方案都显示出高度一致性。平均绝对百分比误差（MAPE）小于10%，表明新型测试方案是VO₂值的有效测量方法。布兰德-奥特曼（Bland-Altman）分析显示，新型测试方案的偏差程度较低，与布鲁斯测试方案（偏差±95%一致性界限=0.824±3.163）和阿斯兰德测试方案（-0.153±3.528）相比，VO₂的一致性界限较窄。配对样本t检验显示，新型测试方案与标准测试方案在VO₂方面没有显著差异。配对样本t检验显示，与布鲁斯和阿斯兰德测试方案相比，新型测试方案的TTE显著更低，且产生的VO₂值与布鲁斯和阿斯兰德测试方案相似。新型测试方案可被认为是一种有效且省时的测试方案。
