title: Standardisation of 31phosphorus-nuclear magnetic resonance spectroscopy determinations of high energy phosphates in humans.
abstract: A procedure is described for standardising the determination of adenosine 5'-triphosphate and phosphocreatine concentration ([ATP] and [PC], respectively, in absolute arbitrary units) in human muscle by nuclear magnetic resonance (NMR) spectroscopy. The individual 31phosphorus (31P)-NMR spectra obtained on equal hemispherical tissue volumes (muscle plus skin and fat) were corrected for the thickness of the skin and of the subcutaneous fat. The volumes investigated were standardised using an external reference. The procedure described made possible the comparison of high energy phosphate concentrations among different subjects. It was applied to the assessment of [ATP] and [PC] in four groups of sedentary subjects (children, and adults aged 20-35, 35-50 and over 50 years), and in a group of athletes (volleyball players). The [ATP] and [PC] were not statistically different in the groups investigated.
authors.affiliation: Département de Physiologie, Centre Médical Universitaire, Geneva, Switzerland.
authors.forename: L
authors.initials: L
authors.lastname: Gariod
authors.forename: T
authors.initials: T
authors.lastname: Binzoni
authors.forename: G
authors.initials: G
authors.lastname: Ferretti
authors.forename: J F
authors.initials: JF
authors.lastname: Le Bas
authors.forename: H
authors.initials: H
authors.lastname: Reutenauer
authors.forename: P
authors.initials: P
authors.lastname: Cerretelli
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004734:Energy Metabolism; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000033:anatomy & histology / Q000378:metabolism; D009929:Organ Size; D010710:Phosphates / Q000378:metabolism*; D010725:Phosphocreatine / Q000378:metabolism; D010758:Phosphorus; D010809:Physical Fitness; D012015:Reference Standards; D012885:Skinfold Thickness
chemical_list: D010710:Phosphates; D010725:Phosphocreatine; D010758:Phosphorus; D000255:Adenosine Triphosphate