Yogev Assaf, Arnold Jem I, Nelson Hannah, Rosenblat Michael A, Clarke David C, Guenette Jordan A, Sporer Ben C, Koehle Michael S
Environmental Physiology Laboratory, The University of British Columbia, School of Kinesiology, Vancouver, BC, Canada.
Department of Biomedical Physiology and Kinesiology and Sports Analytics Group, Simon Fraser University, Burnaby, BC, Canada.
Front Sports Act Living. 2024 Oct 24;6:1406987. doi: 10.3389/fspor.2024.1406987. eCollection 2024.
Minimum muscle oxygen saturation (SmOmin) measured via near-infrared spectroscopy (NIRS) is a common measure during incremental exercise testing (IET). Our objective was to determine the effects of pre-to-post endurance training on SmOmin (ΔSmOmin) during an IET, using a meta-analysis.
MEDLINE, EMBASE, and SPORTDiscus.
Studies including healthy individuals had to meet the following criteria: (1) endurance training intervention; (2) peripheral muscle NIRS; (3) incremental exercise test pre/post training; (4) SmO or analogous saturation parameter measured.
A PEDro scale was used for risk of bias analysis. A random effect meta-analysis model was used to synthesize the effect of training on ΔSmOmin in individual studies. Statistical heterogeneity was quantified using statistic. A meta-regression was used to estimate the effect of training on the relationship between peak cycling power output (Wpeak), peak pulmonary oxygen uptake (V˙Opeak), and ΔSmOmin. A mixed-effect model was used to estimate categorical variables.
Five studies met the inclusion criteria. No difference in SmOmin was detected following training pre- and post-intervention IETs. A trend for an effect of training on the relationship between Wpeak and ΔSmOmin was observed (= 0.06).
This meta-analysis showed no effects of endurance training on SmOmin during an IET. Our results showed a trend for an effect of training on the relationship between Wpeak and ΔSmOmin, with no effect for V˙Opeak and ΔSmOmin. It is possible that SmOmin is not affected by endurance training, and may be used as a physiological marker for improvements in submaximal performance rather than at peak.
通过近红外光谱（NIRS）测量的最低肌肉氧饱和度（SmOmin）是递增运动测试（IET）期间的常用指标。我们的目的是通过荟萃分析确定耐力训练前后对IET期间SmOmin（ΔSmOmin）的影响。
MEDLINE、EMBASE和SPORTDiscus。
纳入健康个体的研究必须符合以下标准：（1）耐力训练干预；（2）外周肌肉NIRS；（3）训练前后进行递增运动测试；（4）测量SmO或类似的饱和度参数。
使用PEDro量表进行偏倚风险分析。采用随机效应荟萃分析模型综合各研究中训练对ΔSmOmin的影响。使用I²统计量对统计异质性进行量化。采用荟萃回归估计训练对峰值骑行功率输出（Wpeak）、峰值肺摄氧量（V˙Opeak）与ΔSmOmin之间关系的影响。采用混合效应模型估计分类变量。
五项研究符合纳入标准。干预前后的IET训练后，未检测到SmOmin有差异。观察到训练对Wpeak与ΔSmOmin之间关系有影响的趋势（P = 0.06）。
这项荟萃分析表明，耐力训练对IET期间的SmOmin没有影响。我们的结果显示，训练对Wpeak与ΔSmOmin之间的关系有影响趋势，而对V˙Opeak与ΔSmOmin没有影响。SmOmin可能不受耐力训练影响，可用作次最大运动表现改善而非峰值表现的生理标志物。
