Decrements in stiffness are restored within 10 min
Deutscher übersetzter Titel: | Verminderungen der Stiffness sind innerhalb von zehn Minuten wiederhergestellt |
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Autor: | Mizuno, Takamasa; Matsumoto, M.; Umemura, Y. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 34 (2013), 6, S. 484-490, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-0032-1327655 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201307005256 |
Quelle: | BISp |
Abstract
The purpose of this study was to clarify the temporal course of stiffness in the muscle-tendon unit after stretching. In 11 male participants, displacement of the myotendinous junction on the gastrocnemius medialis muscle was measured ultrasonographically during the passive-dorsiflexion test, with the ankle was passively dorsiflexed at 1°/s to the end of the range of motion. Passive torque, representing resistance to stretch, was also measured using an isokinetic dynamometer. On 4 different days, passive-dorsiflexion tests were performed before and immediately, 5, 10 or 15 min after stretching, which comprised dorsiflexion to end range of motion and holding that position for 1 min, 5 times. As a result, end range of motion and passive torque at end range of motion were significantly increased after stretching (P<0.05) as compared with each previous value. Although stiffness of the muscle-tendon unit was significantly decreased immediately and 5 min after stretching (P<0.05), this change recovered within 10 min. These results suggest that static stretching for 5 min results in significantly increased range of motion over 30 min, but significant decreases in stiffness of the muscle-tendon unit returned to baseline levels within 5-10 min. Verf.-Referat