Department of Allied Health and Kinesiology, Hofstra University, Hempstead, NY 11549, USA.
Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA 30144, USA.
Sensors (Basel). 2024 Oct 16;24(20):6668. doi: 10.3390/s24206668.
Research examining the changes in muscle oxygen saturation across multiple sets of resistance exercise is limited. The purpose of this study was to describe the physiological response of muscle oxygenation parameters during upper-body resistance exercise and examine the differential effects of relevant participant characteristics on resistance training performance and muscle oxygen saturation dynamics. Sixty-one recreationally trained men (n = 44; 21.8 ± 2.6 years) and women (n = 17; 20.2 ± 1.8 years) completed five-repetition maximum sets of barbell bench presses at a load equal to 75% 1-RM with a 2 min rest interval. Muscle oxygen saturation (SmO) dynamics within the anterior deltoid were monitored using a portable near-infrared spectroscopy sensor. The percent change in SmO (∆%SmO), the muscle oxygen re-saturation rate (SmORecSlope), and the highest measured SmO value during recovery periods (SmOPeak) were measured. Two-way (sex [men, women] x time [sets 1-5]) repeated measures analyses of variance (ANOVA) were performed on muscle saturation variables. To examine the effect of relevant controlling variables, separate analyses of covariance (ANCOVA) with repeated measures were also performed. No differences were seen with ∆%SmO across sets. The main effects for sets occurred for SmORecSlope, whereby a decline was noted on sets 4 and 5 ( = 0.001) compared to set 1. Additionally, SmOPeak was the lowest on set 5 ( < 0.001) compared to all other sets. Moreover, body mass ( = 0.013), diastolic blood pressure ( = 0.044), and mean arterial pressure ( = 0.033) for ∆%SmO were the only significant covariates noted amongst the muscle oxygenation variables. In conclusion, no sex differences and only a few set differences in muscle oxygen saturation dynamics were seen without employing any covariates. Body mass, diastolic blood pressure, and mean arterial pressure were identified as factors that could influence observed responses.
研究检查多次阻力运动中肌肉氧饱和度的变化是有限的。本研究的目的是描述上半身阻力运动期间肌肉氧合参数的生理反应，并检查相关参与者特征对阻力训练表现和肌肉氧饱和度动态的差异影响。61 名有经验的男性（n=44；21.8±2.6 岁）和女性（n=17；20.2±1.8 岁）以 2 分钟的休息间隔，用等于 75%1-RM 的杠铃卧推完成 5 次重复最大组。使用便携式近红外光谱传感器监测前三角肌内的肌肉氧饱和度（SmO）动态。测量 SmO 的百分比变化（∆%SmO）、肌肉氧再饱和率（SmORecSlope）和恢复期内测量的最高 SmO 值（SmOPeak）。对肌肉饱和度变量进行了两次（性别[男性、女性]x 时间[第 1-5 组]）重复测量方差（ANOVA）分析。为了检查相关控制变量的影响，还进行了重复测量的协方差分析（ANCOVA）。在各组之间没有看到∆%SmO 的差异。集的主要效应发生在 SmORecSlope 上，与第 1 组相比，第 4 和第 5 组的下降（ = 0.001）。此外，与所有其他组相比，SmOPeak 在第 5 组（ < 0.001）最低。此外，对于∆%SmO，体重（ = 0.013）、舒张压（ = 0.044）和平均动脉压（ = 0.033）是肌肉氧合变量中唯一注意到的显著协变量。总之，在不使用任何协变量的情况下，没有观察到肌肉氧饱和度动态的性别差异和只有少数组差异。体重、舒张压和平均动脉压被确定为可能影响观察到的反应的因素。
