Neuromuscular responses to 14 weeks of traditional and daily undulating resistance training
Deutscher übersetzter Titel: | Neuromuskuläre Reaktionen auf traditionelles Krafttraining und Krafttraining mit täglicher wellenförmigen Periodisierung über 14 Wochen |
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Autor: | Ullrich, Boris; Holzinger, S.; Soleimani, M.; Pelzer, T.; Stening, J.; Pfeiffer, Mark |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 36 (2015), 7, S. 554-562, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-0034-1398529 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201507006019 |
Quelle: | BISp |
Abstract des Autors
This study compared traditional (TP) and daily undulating (DUP) periodization on muscle strength, EMG-estimated neural drive and muscle architecture of the quadriceps femoris (QF). 10 non-athletic females (24.4 +/- 3.2 years) performed 14 weeks of isometric training for the QF exercising 1 leg using TP and the contralateral leg using DUP. Intensities varied from 60% to 80% of MVC and the intensity zones and training volume were equated for each leg. Knee extension MVC, maximal voluntary QF-EMG activity and vastus lateralis (VL) muscle architecture were measured in both legs before, after 6 weeks and after 14 weeks of training using dynamometry, surface EMG and ultrasonography. Isometric MVC and maximal QF-EMG remained unaltered after 6 weeks of training, but were significantly (P<0.05) enhanced after 14 weeks in both legs (MVC: TP 24%, DUP 23%; QF-EMG: TP 45%, DUP 46%). VL-architecture remained unchanged following 6 weeks of training, but VL-muscle thickness (TP 17%, DUP 16%) and fascicle length (TP 16%, DUP 17%) displayed significant (P<0.05) enlargements after 14 weeks in both legs. Importantly, these temporal neuromuscular alterations displayed no significant differences between the training legs. Therefore, periodization may not act as a key trigger for neuromuscular adaptations. Verf.-Referat