Comparative Bilateral Measurements of Vastus Lateralis Muscle Oxygen Desaturation Kinetics during 30 S Sprint Cycling Exercise: Effects of Age and Performance

IF 4.7 Q2 MATERIALS SCIENCE, BIOMATERIALS ACS Applied Bio Materials Pub Date : 2024-06-13 DOI:10.3390/jfmk9020104

Karmen Reinpõld, Indrek Rannama, Kristjan Port

{"title":"Comparative Bilateral Measurements of Vastus Lateralis Muscle Oxygen Desaturation Kinetics during 30 S Sprint Cycling Exercise: Effects of Age and Performance","authors":"Karmen Reinpõld, Indrek Rannama, Kristjan Port","doi":"10.3390/jfmk9020104","DOIUrl":null,"url":null,"abstract":"The study assessed vastus lateralis oxygen desaturation kinetics (SmO2) in 32 male cyclists (16 Seniors, 16 Juniors) during a 30 s sprint, examining effects of age and performance. An incremental test was used to determine ventilatory thresholds (VT1, VT2) and maximal oxygen uptake (VO2kg), followed by a sprint test to evaluate anaerobic performance. Cyclists’ performance phenotype was determined as the ratio of power at VT2 to 5 s peak sprint power. Juniors exhibited sprinter-like traits, excelling in all functional tests except for lactate levels post-sprint. SmO2 data showed no age-related or bilateral differences across participants. The combined mean response time (MRT) revealed stronger bilateral goodness of fit (R2 = 0.64) than individual time delay (TD) and time constant (τ). Higher VO2kg at VT2, peak power, and maximal uptake were linked to longer TD, while shorter TD correlated with higher lactate production and increased fatigue. Bilaterally averaged SmO2 kinetics distinguished between sprint and endurance athletes, indicating the potential to reflect the alactic anaerobic system’s capacity and depletion. Age did not affect desaturation rates, but younger cyclists showed greater response amplitude, attributed to a higher initial baseline rather than maximal desaturation at the end of the exercise.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"32 19","pages":""},"PeriodicalIF":4.7000,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/jfmk9020104","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}

引用次数: 0

Abstract

The study assessed vastus lateralis oxygen desaturation kinetics (SmO2) in 32 male cyclists (16 Seniors, 16 Juniors) during a 30 s sprint, examining effects of age and performance. An incremental test was used to determine ventilatory thresholds (VT1, VT2) and maximal oxygen uptake (VO2kg), followed by a sprint test to evaluate anaerobic performance. Cyclists’ performance phenotype was determined as the ratio of power at VT2 to 5 s peak sprint power. Juniors exhibited sprinter-like traits, excelling in all functional tests except for lactate levels post-sprint. SmO2 data showed no age-related or bilateral differences across participants. The combined mean response time (MRT) revealed stronger bilateral goodness of fit (R2 = 0.64) than individual time delay (TD) and time constant (τ). Higher VO2kg at VT2, peak power, and maximal uptake were linked to longer TD, while shorter TD correlated with higher lactate production and increased fatigue. Bilaterally averaged SmO2 kinetics distinguished between sprint and endurance athletes, indicating the potential to reflect the alactic anaerobic system’s capacity and depletion. Age did not affect desaturation rates, but younger cyclists showed greater response amplitude, attributed to a higher initial baseline rather than maximal desaturation at the end of the exercise.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

在 30 秒冲刺自行车运动中双侧测量阔筋膜肌肉氧饱和动力学的比较：年龄和运动表现的影响

该研究评估了 32 名男性自行车运动员（16 名老年人，16 名青少年）在 30 秒冲刺期间的阔筋膜氧饱和动力学（SmO2），考察了年龄和成绩的影响。通过增量测试确定通气阈值（VT1、VT2）和最大摄氧量（VO2kg），然后进行冲刺测试以评估无氧运动表现。根据 VT2 功率与 5 秒冲刺峰值功率之比来确定自行车运动员的表现表型。青少年表现出类似短跑运动员的特征，除了冲刺后的乳酸水平外，他们在所有功能测试中都表现出色。SmO2 数据显示，参与者之间没有年龄或双侧差异。与单独的时间延迟（TD）和时间常数（τ）相比，综合平均反应时间（MRT）显示出更强的双侧拟合度（R2 = 0.64）。VT2 时较高的 VO2kg、峰值功率和最大摄入量与较长的 TD 有关，而较短的 TD 则与较高的乳酸盐产生量和疲劳增加有关。双侧平均 SmO2 动力学区分了短跑运动员和耐力运动员，表明其有可能反映无氧系统的能力和消耗。年龄并不影响去饱和率，但年轻的自行车运动员表现出更大的反应幅度，这归因于更高的初始基线而非运动结束时的最大去饱和度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.