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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Velocity-based resistance training: do women need greater velocity loss to maximize adaptations?
TL;DR: In this paper , the intersex differences in neuromuscular adaptations using 20% and 40% velocity-loss protocols in back squat and bench press exercises were examined, and the training-induced improvements were accompanied by increases in surface EMG amplitude and vastus lateralis cross-sectional area.
Posted ContentDOI
Benefits of higher resistance-training volume depends on ribosome biogenesis
Daniel Hammarström,Sjur Johansen Øfsteng,Lise Koll,Marita Hanestadhaugen,Ivana Hollan,William Apró,Jon Elling Whist,Eva Blomstrand,Bent R. Rønnestad,Stian Ellefsen +9 more
TL;DR: Mod led to on average greater adaptations to resistance training and dose-dependent hypertrophy was associated with volume-dependent regulation of total RNA at week 2, suggesting that ribosomal biogenesis regulates the dose-response relationship between training volume and musclehypertrophy.
Journal ArticleDOI
Interrelationship of physical exercise, perceptual discrimination and academic achievement variables in high school students.
A El Jaziz,S Lotfi,A O T Ahami +2 more
TL;DR: This study indicates that the academic achievement was positively associated with the Fluid Intelligence and also with the Resistance Capacity and not with Cardiorespiratory Fitness (VO2peak).
Journal ArticleDOI
Are Strength Indicators and Skin Temperature Affected by the Type of Warm-Up in Paralympic Powerlifting Athletes?
Marcelo de Aquino Resende,Felipe J. Aidar,Roberta Barreto Vasconcelos Resende,Gracielle Costa Reis,Layanne de Oliveira Barros,Dihogo Gama de Matos,Dihogo Gama de Matos,Anderson Carlos Marçal,Paulo Francisco de Almeida-Neto,Alfonso López Díaz-de-Durana,María Merino-Fernández,José Vilaça-Alves,Breno Guilherme de Araújo Tinoco Cabral,Eduardo Borba Neves,Victor Machado Reis,Filipe Manuel Clemente,Nuno Domingos Garrido +16 more
TL;DR: In this article, the effect of different types of warm-ups on the strength and skin temperature of Paralympic powerlifting athletes was evaluated on static and dynamic strength tests as well as in the skin temperature monitored by thermal imaging.
Journal ArticleDOI
Strength and vertical jump performance changes in elite male volleyball players during the season (Cambios en el rendimiento en fuerza y salto vertical en jugadores de élite masculinos de voleibol durante la temporada)
TL;DR: In this article, the effect of strength training on physical performance in elite male volleyball players during the competitive season was analyzed, and significant increases were observed in vertical jump height (CMJ), jump squat height (JS) and mean propulsive velocity (MPV) from SS to ES (P < 0.05).
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