Effects of velocity loss during resistance training on athletic performance, strength gains and muscle adaptations
Fernando Pareja-Blanco,David Rodríguez-Rosell,Luis Sánchez-Medina,Joaquin Sanchis-Moysi,Cecilia Dorado,Ricardo Mora-Custodio,Juan Manuel Yáñez-García,David Morales-Alamo,Ismael Perez-Suarez,Jose A. L. Calbet,Juan José González-Badillo +10 more
TLDR
The progressive accumulation of muscle fatigue as indicated by a more pronounced repetition velocity loss appears as an important variable in the configuration of the resistance exercise stimulus as it influences functional and structural neuromuscular adaptations.Abstract:
We compared the effects of two resistance training (RT) programs only differing in the repetition velocity loss allowed in each set: 20% (VL20) vs 40% (VL40) on muscle structural and functional adaptations. Twenty-two young males were randomly assigned to a VL20 (n = 12) or VL40 (n = 10) group. Subjects followed an 8-week velocity-based RT program using the squat exercise while monitoring repetition velocity. Pre- and post-training assessments included: magnetic resonance imaging, vastus lateralis biopsies for muscle cross-sectional area (CSA) and fiber type analyses, one-repetition maximum strength and full load-velocity squat profile, countermovement jump (CMJ), and 20-m sprint running. VL20 resulted in similar squat strength gains than VL40 and greater improvements in CMJ (9.5% vs 3.5%, P < 0.05), despite VL20 performing 40% fewer repetitions. Although both groups increased mean fiber CSA and whole quadriceps muscle volume, VL40 training elicited a greater hypertrophy of vastus lateralis and intermedius than VL20. Training resulted in a reduction of myosin heavy chain IIX percentage in VL40, whereas it was preserved in VL20. In conclusion, the progressive accumulation of muscle fatigue as indicated by a more pronounced repetition velocity loss appears as an important variable in the configuration of the resistance exercise stimulus as it influences functional and structural neuromuscular adaptations.read more
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Effects of Velocity Loss Threshold during Resistance Training on Strength and Athletic Adaptations: A Systematic Review with Meta-Analysis
TL;DR: In this article , the effects of different velocity loss thresholds on strength and athletic adaptations were systematically reviewed using between-group (low-modVL vs. mod-highVL) and within-group analyses.
Journal ArticleDOI
Comparison of Velocity and Percentage-based Training on Maximal Strength:Meta-Analysis.
Mingyang Zhang,Q Tan,Jian Sun,Shicong Ding,Qun Yang,Zhiyong Zhang,Junbing Lu,Xingyue Liang,D. Li +8 more
TL;DR: In this article , the authors analyzed the effect of velocity-based resistance training and one-repetition maximum (1RM) percentage-based training in maximal strength improvement by meta-analyzing and to find the reasons for the controversial findings of different studies.
Journal ArticleDOI
Training and testing practices of strength and conditioning coaches in Argentinian Rugby Union
TL;DR: In this article , the authors used an online survey to characterize the training and testing strategies commonly implemented by Argentinian rugby strength and conditioning coaches, which could serve as a guideline for coaching education programs.
Journal ArticleDOI
Analysis of velocity- and power-load relationships of the free-weight back-squat and hexagonal bar deadlift exercises
Petrus Gantois,Fabiano de Souza Fonseca,Fábio Yuzo Nakamura,Leonardo de Sousa Fortes,Jaime Fernandez-Fernandez,Gilmário Ricarte Batista +5 more
TL;DR: In this article , the load-velocity and load-power relationships in the free-weight back-squat (BSQ) and hexagonal bar deadlift (HBD) exercises were analyzed by fitting linear regression and second-order polynomial, respectively, to the data.
Journal ArticleDOI
Effects of cluster training sets on muscle power and force–velocity relationship in postmenopausal women
Marcelo A S Carneiro,Gersiel Nascimento de Oliveira Junior,Jairo de Freitas Rodrigues de Sousa,Samarita Beraldo Santagnello,Markus Vinicius Campos Souza,Fábio Lera Orsatti +5 more
TL;DR: The findings suggest that TS may be a preferential RT design if the focus of training is a force–velocity profile more “force-oriented”, whereas CS may beA preferential RTDesign if thefocus of training was a force-oriented, more "velocity-oriented" profile.
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