Effects of potassium and magnesium aspartate on muscle metabolism and force development during short intensive static exercise
Deutscher übersetzter Titel: | Wirkungen von Kalium- und Magnesium-Aspartat auf Muskelstoffwechsel und Kraftentwicklung bei kurzer intensiver statischer Belastung |
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Autor: | Haan, A. de; Doorn, J.E.van; Westra, H.G. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 6 (1985), 1, S. 44-49, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2008-1025812 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU198503023189 |
Quelle: | BISp |
Abstract
Improvement of muscle performance by 20 - 50 in man at a submaximal work load after administration of potassium and magnesium salts of aspartic acid (K + Mg Asp) has been reported in the literature. Administration of K + Mg Asp has been reported to affect force production and energy metabolism in short term activities of electrical stimulated animals muscles. The present study examined the possible effects of K + Mg Asp on: (1) energy metabolism and force production of electrically stimulated rat quadriceps muscle and (2) endurance time of a submaximal static force of voluntary contracting human muscles. In rat muscles metabolic parameters such as ATP, phosphocreatine, lactate, and L-aspartate were not influenced by oral administration of K + Mg Asp. Force parameters of rat quadriceps muscles were notenhanced after administration of K + Mg Asp. In human volunteers neither the exerted force nor the endurance time increased after oral administration of K + Mg Asp. An effect of K + Mg Asp on muscle metabolism by stimulation of the purine nucleotide cycle was not found. Improvement of muscle performance by 20 - 50 as reported for long-term activity, was not observed for short-term intensive activity. Verf.-Referat