Department of Kinesiology and Physical Education, Wilfrid Laurier University, 75 University Ave W, Waterloo, ON, N2L 3C5, Canada.
Eur J Appl Physiol. 2021 Mar;121(3):861-870. doi: 10.1007/s00421-020-04559-3. Epub 2021 Jan 2.
Current methods (plateau/secondary criteria) to determine maximal oxygen consumption ([Formula: see text]O) are inconsistently achieved leading some to suggest the use of a verification phase (VP) to confirm [Formula: see text]O.
To provide further evidence for the inclusion of a VP to confirm [Formula: see text]O in different fitness levels.
Forty-nine participants (22 females; 21.9 ± 2.6 years, 24.3 ± 2.8 kg m, 45.27 ± 7.68 mL kg min) had their [Formula: see text]O and heart rate measured during three graded exercise tests (GXT) on separate days each followed by a VP of differing intensity (85%, 95%, 105% final workload). Participants were divided into groups using norms adapted from American College of Sports Medicine [Formula: see text]O guidelines (30.47-61.47 mL kg min). [Formula: see text]O was confirmed if the [Formula: see text]O on the VP or an additional GXT was within ± 2 × typical error of the [Formula: see text]O attained on the first GXT. There was no effect of test number so the third GXT was not included in comparison with VP.
The [Formula: see text]O from the first GXT was not different than either value attained following the VP at 95 or 105% workload or a second GXT (p > 0.999). The 85% VP [Formula: see text]O was lower than the first GXT [Formula: see text]O (p = 0.002). The VP confirmed the GXT [Formula: see text]O on 73% of VP (no differences among fitness levels). Submaximal VP (85 and 95%) was less effective as 65% and 51% of participants achieved a higher [Formula: see text]O on one of the GXT.
The use of a VP at 105% or a second GXT was able to confirm the [Formula: see text]O value attained across a range of fitness levels.
目前，确定最大摄氧量（[Formula: see text]O）的方法（平台/次要标准）并不一致，这导致一些人建议使用验证阶段（VP）来确认[Formula: see text]O。
为在不同健康水平中纳入 VP 来确认[Formula: see text]O 提供进一步证据。
49 名参与者（22 名女性；21.9±2.6 岁，24.3±2.8kg m，45.27±7.68mL kg min）在三天的不同日子里分别进行了三次递增运动测试（GXT），每次测试后进行不同强度的 VP（85%、95%、105%最终工作负荷）。参与者根据美国运动医学学院[Formula: see text]O 指南的标准（30.47-61.47mL kg min）被分为不同的组。如果 VP 或另一次 GXT 的[Formula: see text]O 在第一次 GXT 获得的[Formula: see text]O 的±2×典型误差范围内，则确认[Formula: see text]O。由于测试次数没有影响，因此在与 VP 比较时不包括第三次 GXT。
第一次 GXT 的[Formula: see text]O 与 VP 在 95%或 105%工作量或第二次 GXT 后的任何一个值都没有差异（p>0.999）。VP 的 85%[Formula: see text]O 低于第一次 GXT 的[Formula: see text]O（p=0.002）。VP 在 73%的 VP 中确认了 GXT 的[Formula: see text]O（不同健康水平之间没有差异）。次最大 VP（85%和 95%）效果较差，因为 65%和 51%的参与者在一次 GXT 中达到了更高的[Formula: see text]O。
在一定健康水平范围内，使用 105%VP 或第二次 GXT 可以确认达到的[Formula: see text]O 值。
