Myoglobin desaturation with exercise intensity in human gasocnemius muscle

Myoglobin desaturation with exercise intensity in human gasocnemius muscle

The present study evaluated whether intracellular partial pressure of O2 (PO2) modulates the muscle O2 uptake (VO2) as exercise intensity increased. Indirect calorimetry followed VO2, whereas nuclear magnetic resonance (NMR) monitored the high-energy phosphate levels, intracellular pH, and intracell...

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Veröffentlicht in:American journal of physiology. Regulatory, integrative and comparative physiology integrative and comparative physiology, 1999-07, Vol.46 (1), p.R173
Hauptverfasser: Mole, Paul A, Chung, Youngran, Tran, Tuan Khanh, Sailasuta, Napapon
Format: Artikel
Sprache:eng
Schlagworte:
Exercise
Metabolism
Muscular system
Oxygen
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Zusammenfassung:The present study evaluated whether intracellular partial pressure of O2 (PO2) modulates the muscle O2 uptake (VO2) as exercise intensity increased. Indirect calorimetry followed VO2, whereas nuclear magnetic resonance (NMR) monitored the high-energy phosphate levels, intracellular pH, and intracellular PO2 in the gastrocnemius muscle of four untrained subjects at rest, during plantar flexion exercise with a constant load at a repetition rate of 0.75, 0.92, and 1.17 Hz, and during postexercise recovery.
ISSN:0363-6119
1522-1490