Heterogeneity of Muscle Oxygen Consumption and Muscle Oxygenated Hemoglobin/Myoglobin Content in Thigh during Incremental Cycling Exercise
نویسندگان
چکیده
منابع مشابه
Breakpoints in ventilation, cerebral and muscle oxygenation, and muscle activity during an incremental cycling exercise
The aim of this study was to locate the breakpoints of cerebral and muscle oxygenation and muscle electrical activity during a ramp exercise in reference to the first and second ventilatory thresholds. Twenty-five cyclists completed a maximal ramp test on an electromagnetically braked cycle-ergometer with a rate of increment of 25 W/min. Expired gazes (breath-by-breath), prefrontal cortex and v...
متن کاملMuscle oxygen extraction is higher during constant work exercise than during incremental ramp exercise.
A cardiopulmonary exercise test (CPX) can provide objective measures of exercise capacity. Specifically, incremental ramp exercise (IRE) and constant work-rate exercise (CWE) protocols are frequently used in clinical practice and for research. The CWE endurance time has shown larger increases than other indexes assessed by IRE after rehabilitation intervention. Muscle oxygen extraction is one o...
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Muscle deoxygenation (i.e., deoxy[Hb + Mb]) during exercise assesses the matching of oxygen delivery (Q̇O2) to oxygen utilization (V̇O2). Until now limitations in near-infrared spectroscopy (NIRS) technology did not permit discrimination of deoxy[Hb + Mb] between superficial and deep muscles. In humans, the deep quadriceps is more highly vascularized and oxidative than the superficial quadriceps....
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Muscle deoxygenation in the quadriceps during ramp incremental 1 cycling: deep versus superficial heterogeneity 2 3 Dai Okushima, David C. Poole, Harry B. Rossiter, Thomas J. Barstow, Narihiko 4 Kondo, Etsuko Ohmae, Shunsaku Koga, 5 Applied Physiology Laboratory, Kobe Design University, Kobe, Hyogo, Japan; 6 Departments of Kinesiology and Anatomy and Physiology, Kansas State University, 7 Manha...
متن کاملMuscle Oxygen content at exercise in patients with claudication.
TO THE EDITOR: We read with great interest the study by Dr. Luck et al. (4) in which the authors show that, when fatigued, patients with peripheral artery disease (PAD) experience a greater reduction in muscle saturation (SmO2) than subjects matched for age, sex, and body mass index. The conclusion drawn from these observations (that PAD patients have altered oxygen uptake and/or utilization du...
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ژورنال
عنوان ژورنال: The Journal of Japanese College of Angiology
سال: 2012
ISSN: 0387-1126,1880-8840
DOI: 10.7133/jca.52.115