Neuromuscular Responses to 14 Weeks of Traditional and Daily Undulating Resistance Training

International Journal of Sports Medicine
Boris UllrichM Pfeiffer

Abstract

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 no...Continue Reading

Citations

Feb 1, 2018·Journal of Strength and Conditioning Research·Eduardo Oliveira De SouzaCarlos Ugrinowitsch
Dec 24, 2018·Scandinavian Journal of Medicine & Science in Sports·Dustin J OranchukJohn B Cronin
Feb 22, 2018·Journal of Strength and Conditioning Research·Boris UllrichMark Pfeiffer
Feb 6, 2020·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·David Rodríguez-RosellJuan José González-Badillo
Feb 6, 2017·European Journal of Applied Physiology·Thiemo PelzerMark Pfeiffer
Jan 7, 2021·Sports Medicine·Ryo KataokaSamuel L Buckner
Feb 16, 2021·Aging Clinical and Experimental Research·Hélio José Coelho-JúniorEmanuele Marzetti

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