Using Near Infrared Spectroscopy to measure tissue localized tissue oxygenation as a measure of exercise stress during a cycling ergometer time trial.

心率、耗氧量和呼吸频率等疲劳的影响可能具有挑战性， 在现场解释或测量。在运动过程中，肌肉的氧饱和度会降低，而在休息时， 增加可以使用近红外光谱装置（NIRS）测量肌肉氧合。帕索尼克斯 近红外光谱仪是一种移动的非侵入性的光学方法来评估肌肉氧和血红蛋白。的速率 在休息期间氧气返回到肌肉的是再饱和率。我们建议研究再饱和率 作为一种新的测量运动肢体疲劳的方法。 本研究将探讨新型近红外肌肉氧合与血流动力学之间的关系， 目前的疲劳指标，以找到一个可靠的非侵入性措施的疲劳在运动中。受试者将 首先通过分级运动试验测量他们的最大耗氧量（VO2max）。期间 在第二次访视时，受试者将以恒定强度进行力竭时间测试。在两次演习中， 将记录任务、心率、通气量、耗氧量和肌肉氧合。 Pathonix的人员在NIRS的临床应用方面具有先进的专业知识，然而，目前， 近红外光谱在运动员中的应用是有限的。Koehle博士和他在UBC的团队是运动专家 生理学，并有能力探索这种新技术对运动表现的效用。这 一项研究旨在将NIRS设备与当前的疲劳指标进行比较，并概述如何使用新的测量方法， 肌氧和血红蛋白可被运动员用作疲劳的指标。 骑自行车的人特别感兴趣的是使用技术来监测和提高他们的表现。加拿大 在自行车运动中的存在每年都在增加。加拿大创新者开发的技术 被世界各地的顶级球队使用。这项技术的适当发展将巩固我们的 作为一个国家在体育科学的前沿地位。

Metrics of fatigue like heart rate, oxygen consumption and frequency of breathing can be challenging to interpret or measure in the field. During exercise muscle oxygen saturation will decrease, while at rest it will increase. Muscle oxygenation can be measured using a near infrared spectroscopy device (NIRS). Pathonix's NIRS device is a mobile noninvasive optical method to assess muscle oxygen and hemoglobin. The rate at which oxygen returns to muscle during rest is the resaturation rate. We propose to investigate resaturation rate as a novel measure of fatigue in an exercising limb. This research will explore the relationships between novel NIRS muscle oxygenation and hemodynamics and current indicators of fatigue, to find a reliable noninvasive measure of fatigue during exercise. Subjects will first be measured for their maximal oxygen consumption (VO2max) via a graded exercise test. During the second visit, subjects will perform a time-to-exhaustion test at a constant intensity. Throughout both exercise tasks, heart rate, ventilation, oxygen consumption, and muscle oxygenation will be recorded. The individuals at Pathonix have advanced expertise in the clinical application of NIRS, however, at present, the utility of NIRS in the exercising athlete is limited. Dr. Koehle and his team at UBC are experts in exercise physiology and have the capability to explore the utility of this new technology for athletic performance. This research intends to compare a NIRS device to current indicators of fatigue and outline how novel measures of muscle oxygen and hemoglobin could be used by athletes as an index of fatigue. Cyclists are particularly interested in using technology to monitor and improve their performance. Canada's presence in cycling has been increasing every year. Canadian innovators have developed technologies that are being used by the top teams around the world. The proper development of this technology will solidify our position as a country at the forefront of sport science.