Astorino Todd A, DeRevere Jamie
Department of Kinesiology, CSU-San Marcos, San Marcos, CA, USA.
Department of Physical Education and Human Performance, Central Connecticut State University, New Britain, CT, USA.
Clin Physiol Funct Imaging. 2018 Jul;38(4):703-709. doi: 10.1111/cpf.12474. Epub 2017 Sep 22.
Although maximal oxygen uptake (VO max) has been measured for almost 100 years, it is unknown when 'true' VO max is attained. Primary (the VO plateau) and secondary criteria are used to confirm VO max incidence, but frequency of the VO plateau varies, and secondary criteria are relatively invalid. The verification test (VER) seems to elicit similar estimates of VO max versus the incremental value (INC), yet existing data are limited by small populations and use of inadequate criteria to confirm 'true' VO max. We investigated the efficacy of VER by analysing data from 109 participants who underwent INC followed by VER at 105% or 110% of peak power output (PPO). Differences in VO max between VER and INC were analysed, and intraclass correlation coefficient (ICC), standard error of the mean (SEM) and minimum difference (MD) were computed. Results showed that VO max was significantly higher (2%, P<0·05) in INC versus VER, VO max was highly related between protocols (ICC = 0·99) and SEM and MD were low. However, 11% of participants did not reveal 'true' VO max as the verification value was higher than INC by 3·0% - 3·3%. Fitness level altered the difference in VO max between INC and VER in study one, as lower fitness individuals showed a larger difference in VO max between protocols, although gender did not affect the difference in VO max between protocols. Our data show that VER does not verify 'true' VO max in all individuals, which may be related to their fitness level.
尽管最大摄氧量（VO₂max）已被测量近100年，但尚不清楚何时能达到“真正的”VO₂max。主要标准（VO₂平台期）和次要标准用于确认VO₂max的发生情况，但VO₂平台期的出现频率各不相同，且次要标准相对无效。与递增负荷测试（INC）相比，验证测试（VER）似乎能得出相似的VO₂max估计值，但现有数据受限于样本量小以及用于确认“真正的”VO₂max的标准不充分。我们通过分析109名参与者的数据来研究VER的有效性，这些参与者先进行INC测试，然后在峰值功率输出（PPO）的105%或110%时进行VER测试。分析了VER和INC之间VO₂max的差异，并计算了组内相关系数（ICC）、平均标准误差（SEM）和最小差异（MD）。结果显示，与VER相比，INC中的VO₂max显著更高（2%，P<0.05），两种测试方案下的VO₂max高度相关（ICC = 0.99），且SEM和MD较低。然而，11%的参与者未显示出“真正的”VO₂max，因为验证值比INC高3.0% - 3.3%。在研究一中，健康水平改变了INC和VER之间VO₂max的差异，因为健康水平较低的个体在两种测试方案下的VO₂max差异更大，尽管性别并未影响两种测试方案之间VO₂max的差异。我们的数据表明，VER并不能在所有个体中验证“真正的”VO₂max，这可能与他们的健康水平有关。
