Downhill walking training with and without exercise-induced muscle damage similarly increase knee extensor strength
Deutscher übersetzter Titel: | Bergab-Training im Walking mit und ohne trainingsinduzierte Muskelverletzungen beeinflusst die Kraft der Kniegelenkextension in ähnlicher Weise |
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Autor: | Maeo, Sumiaki; Yamamoto, Masayoshi; Kanehisa, Hiroaki |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 34 (2016), 21, S. 2018-2026, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640414.2016.1149607 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201608005793 |
Quelle: | BISp |
Abstract des Autors
This study examined whether avoiding or experiencing exercise-induced muscle damage (EIMD) influences strength gain after downhill walking training. Healthy young males performed treadmill downhill walking (gradient: −28%, velocity: 5 km · h−1 and load: 10% of body mass) 1 session per week for four weeks using either a ramp-up protocol (n = 16), where exercise duration was gradually increased from 10 to 30, 50 and 70 min over four sessions, or a constant protocol (n = 14), where exercise duration was 40 min for all four sessions. Indirect markers of EIMD were measured throughout the training period. Maximal knee extension torque in eccentric (−1.05 rad·s−1), isometric and concentric (1.05 rad·s−1) conditions were measured at pre- and post-training. The ramp-up group showed no indications of EIMD throughout the training period (e.g., plasma creatine kinase (CK) activity: always <185 U · L−1) while EIMD was evident after the first session in the constant group (CK: peak 485 U · L−1). Both groups significantly increased maximal knee extension torque in all conditions with greater gains in eccentric (ramp-up: +19%, constant: +21%) than isometric (+16%, +15%) and concentric (+12%, +10%) strength without any significant group-difference. The current results suggest that EIMD can be avoided by the ramp-up protocol and is not a major determinant of training-induced strength gain.