Test–retest reliability of pulmonary oxygen uptake and muscle deoxygenation during moderate- and heavy-intensity cycling in youth elite-cyclists

To establish the test–retest reliability of pulmonary oxygen uptake (V̇O2), muscle deoxygenation (deoxy[haem]) and tissue oxygen saturation (StO2) kinetics in youth elite-cyclists. From baseline pedalling, 15 youth cyclists completed 6-min step …

Understanding near infrared spectroscopy and its application to skeletal muscle research

Barstow TJ. Understanding near infrared spectroscopy and its application to skeletal muscle research. J Appl Physiol 126: 1360 –1376, 2019. First published March 7, 2019; doi:10.1152/japplphysiol.00166.2018.—Near infrared spectroscopy (NIRS) is a …

Influence of exercise duration on cardiorespiratory responses, energy cost and tissue oxygenation within a 6 hour treadmill run

Purpose. The physiological mechanisms for alterations in oxygen utilization (V˙O2) and the energy cost of running (Cr) during prolonged running are not completely understood, and could be linked with alterations in muscle and cerebral tissue …

Limitations of skeletal muscle oxygen delivery and utilization during moderate-intensity exercise in moderately impaired patients with chronic heart failure

The extent and speed of transient skeletal muscle deoxygenation during exercise onset in patients with chronic heart failure (CHF) are related to impairments of local O2 delivery and utilization. This study examined the physiological background of …