Effects of antagonist pre-load on knee extensor isokinetic muscle performance
Deutscher übersetzter Titel: | Einfluss einer Vorbelastung des Antagonisten auf die isokinetische Leistungsfähigkeit der Kniestreckermuskulatur |
---|---|
Autor: | Carregaro, Rodrigo L.; Gentil, Paulo; Brown, Lee E.; Pinto, Ronei Silveira; Bottaro, Martim |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 29 (2011), 3, S. 271-278, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2010.529455 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201403003276 |
Quelle: | BISp |
Abstract
The aim of this study was to evaluate and compare acute effects of a reciprocal action protocol and a super-set protocol on knee extensor performance during concentric isokinetic exercise. Fourteen men aged 29.4 ± 6.1 years were tested on three different protocols, with 1 min of rest between sets: control (3 sets of 10 isokinetic knee extension repetitions), reciprocal action protocol (3 sets of 10 repetitions of reciprocal isokinetic concentric knee flexion and knee extension repetitions), and super-set protocol (3 sets of a combination of 10 repetitions of knee flexion immediately followed by 10 repetitions of knee extension repetitions). Tests were performed at 60° * s-1 and 180° * s-1, randomized across 3 days and separated by at least 72 h. There were no significant differences between protocols for peak torque at 60° * s-1 or 180° * s-1. Total work was significantly higher during the reciprocal action protocol compared with the super-set protocol at 60° * s-1. There was a significant decline in peak torque (from 240.6 to 212.9 N * m) and total work (from 2294 to 1899 J) for the control condition at 60° * s-1. Also, total work declined significantly across sets for the super-set protocol at 60° * s-1 (from 2157 to 1707 J). Results indicate that a reciprocal action protocol provides torque maintenance during multiple sets of isokinetic training, both at slow and high velocities. Verf.-Referat