Highlights
Scientific Article
unige:10030 
 |
Metabolic transient studies by NMR |
|
| Authors | ||
| Published in | International Journal of Sports Medicine. 1992, vol. 13, no. Suppl 1, p. S155-157 | |
| Abstract | The time course of phosphocreatine (PC) hydrolysis in humans was measured by 31P-NMR spectroscopy (31P-NMRS) with a time resolution of 10.8 s in the gastrocnemius muscle and a relationship between muscle O2 consumption (VO2) and [PC] was derived from a bioenergetic model. This allowed a direct estimate of the half-time of the intracellular VO2 kinetics (t1/2 VO2) of the contracting human gastrocnemius in aerobic conditions. t1/2 VO2 was found to be approximately 16 s and independent of the work load. This value corresponds to the shortest t1/2 VO2 determined at the mouth of the subject in the absence of lactate accumulation in the rest to work transient. t1/2 VO2 may now be assessed in man at low muscle temperatures. To this aim a procedure was developed allowing corrections of the 31P-NMR spectra based on the muscle temperature profiles obtained by a simultaneously acquired proton image. | |
| Keywords | Adenosine Triphosphate/biosynthesis — Body Temperature/physiology — Energy Metabolism/physiology — Exercise/physiology — Humans — Hydrolysis — Magnetic Resonance Spectroscopy — Muscles/ metabolism — Oxygen Consumption/physiology — Phosphocreatine/metabolism | |
| Identifiers | PMID: 1483759 | |
| Full text |
This document has no fulltext available yet, but you can contact its author by using the form below.
|
|
| Citation (ISO format) | BINZONI, Tiziano et al. Metabolic transient studies by NMR. In: International Journal of Sports Medicine, 1992, vol. 13, n° Suppl 1, p. S155-157. doi: 10.1055/s-2007-1024624 https://archive-ouverte.unige.ch/unige:10030 |
428 hits 
0 download 
Contact an author
Update