Kowalski Tomasz, Wilk Adrian, Rębiś Kinga, Lohse Kim-Morgaine, Sadowska Dorota, Klusiewicz Andrzej
Department of Physiology, Institute of Sport-National Research Institute, Warsaw, Poland.
Centre for Digital Health Interventions, Department of Management, Technology, and Economics, ETH Zurich, Zurich, Switzerland.
BMC Sports Sci Med Rehabil. 2024 Jun 20;16(1):137. doi: 10.1186/s13102-024-00927-0.
Respiratory muscle training plays a significant role in reducing blood lactate concentration (bLa) and attenuating negative physiological stress reactions. Therefore, we investigated if voluntary isocapnic hyperpnoea (VIH) performed after a maximum anaerobic effort influences bLa and perceived fatigue level in well-trained speedskaters. 39 elite short-track speedskaters participated in a trial with two parallel groups: experimental and control. All the participants performed the Wingate Anaerobic Test (WAnT). The experimental group performed a VIH-based recovery protocol 20 min after exercise, the control group used passive recovery only. Blood samples were taken 3 and 30 min after the WAnT to measure bLa. Fatigue was self-appraised on a 0-10 perceived rating-of-fatigue (ROF) scale 3 and 30 min after the WAnT. Noteworthy, but not statistically significant changes between the experimental and control groups were observed for changes in bLa (p = 0.101). However, statistically significant changes between the groups were found for ROF (p = 0.003, η = 0.211, ω = 0.106). Moreover, statistically significant interactions between post-exercise bLa clearance and VOmax (p = 0.028) and inspiratory muscle strength (p = 0.040) were observed. Our findings provided preliminary insight that VIH may be an efficient recovery protocol after anaerobic exercise performed by elite athletes. The association between VOmax and post-exercise bLa clearance indicates the vital role of aerobic fitness in repeated-efforts ability in short-track speedskaters. The study was registered at ClinicalTrials.gov as NCT05994092 on 15th August 2023.
呼吸肌训练在降低血乳酸浓度（bLa）和减轻负面生理应激反应方面发挥着重要作用。因此，我们研究了在最大无氧运动后进行的自愿等碳酸过度通气（VIH）是否会影响训练有素的速滑运动员的bLa和感知疲劳水平。39名精英短道速滑运动员参与了一项试验，分为两个平行组：实验组和对照组。所有参与者都进行了温盖特无氧试验（WAnT）。实验组在运动后20分钟进行基于VIH的恢复方案，对照组仅采用被动恢复。在WAnT后3分钟和30分钟采集血样以测量bLa。在WAnT后3分钟和30分钟，通过0 - 10的感知疲劳评分（ROF）量表对疲劳进行自我评估。值得注意的是，实验组和对照组之间bLa的变化虽未达到统计学显著差异（p = 0.101）。然而，两组之间ROF存在统计学显著差异（p = 0.003，η = 0.211，ω = 0.106）。此外，观察到运动后bLa清除率与最大摄氧量（VOmax）（p = 0.028）和吸气肌力量（p = 0.040）之间存在统计学显著的相互作用。我们的研究结果提供了初步见解，即VIH可能是精英运动员无氧运动后的一种有效恢复方案。VOmax与运动后bLa清除率之间的关联表明有氧适能在短道速滑运动员重复运动能力中的重要作用。该研究于2023年8月15日在ClinicalTrials.gov上注册，注册号为NCT05994092。
