Schmitz Boris, Pfeifer Carina, Thorwesten Lothar, Krüger Michael, Klose Andreas, Brand Stefan-Martin
University Hospital Muenster.
University of Muenster.
Res Q Exerc Sport. 2020 Sep;91(3):478-487. doi: 10.1080/02701367.2019.1684432. Epub 2020 Jan 31.
: This study analyzed the physiological response during Yo-Yo Intermittent Recovery Level 1 (YYIR1) test and re-test by in-field ergospirometry and time-series analyses of respiratory parameters. : Ten moderately trained males (23.4 ± 2.01 years, VO= 56.81 ± 10.75 mL·kg·min) completed three running trials including two separate YYIR1 tests and an independent maximal performance running test with time-series analyses of gas exchange parameters. Physiological response was assessed during all tests by determination of blood lactate levels (including calculation of individual lactate threshold), heart rate, oxygen consumption and respiratory exchange ratio (RER). : Modeling of YYIR1 test mean VO uptake kinetics over all participants revealed that VO increased rapidly after the individual lactate threshold (11.49 ± 0.66 km∙h at 3.83 ± 0.42 mmol∙L) was reached with ~95% VO at ~50% of the test duration (test, VO = 95.17 ± 8.74% of VO; re-test, VO = 96.78 ± 7.04% of VO). However, and despite identical YYIR1 test performance (1568 ± 364.6 m vs. 1568 ± 449.7 m, CV = 4.59%), mean VO during YYIR1 test was 8.81 ± 5.6% higher than YYIR1 re-test ( = .027). Importantly, correlation of VO with YYIR1 test performance was weak (R = 0.28, = .115). : We conclude that the YYIR1 test should not be used to estimate VO. Further studies on direct determination of gas exchange parameters during different YYI test variants are warranted.
本研究通过现场运动气体代谢测定法和呼吸参数的时间序列分析，分析了一级Yo-Yo间歇恢复测试（YYIR1）及其复测过程中的生理反应。10名中度训练的男性（23.4±2.01岁，VO₂max = 56.81±10.75 mL·kg⁻¹·min⁻¹）完成了三项跑步试验，包括两次独立的YYIR1测试和一次独立的最大运动能力跑步测试，并对气体交换参数进行了时间序列分析。在所有测试过程中，通过测定血乳酸水平（包括计算个体乳酸阈）、心率、耗氧量和呼吸交换率（RER）来评估生理反应。对所有参与者的YYIR1测试平均VO₂摄取动力学建模显示，在达到个体乳酸阈（3.83±0.42 mmol·L时为11.49±0.66 km∙h）后，VO₂迅速增加，在测试持续时间约50%时达到约95%的VO₂（测试时，VO₂ = VO₂max的95.17±8.74%；复测时，VO₂ = VO₂max的96.78±7.04%）。然而，尽管YYIR1测试表现相同（1568±364.6 m对1568±449.7 m，CV = 4.59%），但YYIR1测试期间的平均VO₂比YYIR1复测高8.81±5.6%（P = 0.027）。重要的是，VO₂与YYIR1测试表现的相关性较弱（R = 0.28，P = 0.115）。我们得出结论，YYIR1测试不应被用于估计VO₂max。有必要对不同YYI测试变体期间气体交换参数的直接测定进行进一步研究。
