Increased cardiovascular response to static contraction of larger muscle groups
| Deutscher übersetzter Titel: | Erhoehte kardiovaskulaere Reaktion auf statische Kontraktion groesserer Muskelgruppen |
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| Autor: | Seals, Douglas R.; Washburn, Richard A.; Hanson, Peter G.; Painter, Patricia L.; Nagle, Francis J. |
| Erschienen in: | Journal of applied physiology |
| Veröffentlicht: | 54 (1983), 2, S. 434-437, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource |
| Sprache: | Englisch |
| ISSN: | 8750-7587, 0021-8987, 0161-7567, 1522-1601 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU198305019090 |
| Quelle: | BISp |
Abstract
The purpose of this study was to investigate the influence of the size of the active muscle mass on the cardiovascular response to static contraction. Twelve male subjects performed one-arm handgrip (HG), two-leg extension (LE), and a dead-lift maneuver (DL) in a randomly assigned order for 3 min at 30 of maximal voluntary contraction. 02 uptake (V02), heart rate (HR), and mean intraarterial blood pressure (MABP) were measured at rest and, in addition to absolute tension exerted, throughout contraction. There was a direct relationship between the size of the active muscle mass and the magnitude of the increases in V02, HR, and MABP, even though all contractions were performed at the same relative intentity. Tension, V02, HR, and MABP increased progressively from HG to LE to DL. It was concluded that at the same percentage of maximal voluntary contraction, the magnitude of the cardiovascular response to isometric exercise is directly influenced by the size of the contracting muscle mass. Verf.-Referat