RT Journal Article
T1 Velocity Loss as a Critical Variable Determining the Adaptations to Strength Training
A1 Pareja Blanco, Fernando
A1 Alcázar, Julián
A1 Sánchez-Valdepeñas Mateos-Aparicio, Juan
A1 Cornejo Daza, Pedro Jesús
A1 Piqueras-Sanchiz, Francisco
A1 Mora Vela, Raúl
A1 Sánchez Moreno, Miguel
A1 Bachero Mena, Beatriz
A1 Ortega Becerra, Manuel Alejandro
A1 Alegre, Luis M
K1 Dose-response
K1 Neuromuscular adaptations
K1 Architectural adaptations
K1 Tensiomyography
K1 Muscle hypertrophy
AB Purpose: This study aimed to compare the effects of four resistance training (RT) programs with different velocity loss (VL) thresholds: 0% (VL0), 10% (VL10), 20% (VL20), and 40% (VL40) on sprint and jump performance, muscle strength, neuromuscular, muscle hypertrophy, and architectural adaptations.Methods: Sixty-four young resistance-trained men were randomly assigned into four groups (VL0, VL10, VL20, and VL40) that differed in the VL allowed in each set. Subjects followed an RT program for 8 wk (two sessions per week) using the full-squat (SQ) exercise, with similar relative intensity (70%-85% 1-repetition maximum), number of sets (3), and interset recovery period (4 min). Before and after the RT program, the following tests were performed: 1) muscle hypertrophy and architecture of the vastus lateralis (VLA), 2) tensiomyography, 3) 20-m running sprint, 4) vertical jump, 5) maximal voluntary isometric contraction in SQ, 6) progressive loading test in SQ, and 7) fatigue test.Results: No between-group differences existed for RT-induced gains in sprint, jump, and strength performance despite the differences in the total volume performed by each group. VL20 and VL40 showed significant increases (P < 0.001) in muscle hypertrophy (group-time interaction, P = 0.06). However, only VL40 exhibited a significant slowing (P < 0.001) of the delay time in the VLA muscle (group-time interaction, P = 0.05). Moreover, VL40 showed a significant decrease in the early rate of force development (P = 0.04).Conclusions: Higher VL thresholds (i.e., VL20 and VL40) maximized hypertrophic adaptations, although an excessive VL during the set (i.e., VL40) may also induce negative neuromuscular adaptations. Therefore, moderate VL thresholds should be chosen to maximize strength adaptations and to prevent negative neuromuscular adaptations.
PB Madison, Wis., American College of Sports Medicine
YR 2020
FD 2020-08-12
LK https://hdl.handle.net/10433/25051
UL https://hdl.handle.net/10433/25051
LA en
NO Pareja-Blanco F, Alcazar J, Sánchez-Valdepeñas J, Cornejo-Daza PJ, Piqueras-Sanchiz F, Mora-Vela R, Sánchez-Moreno M, Bachero-Mena B, Ortega-Becerra M, Alegre LM. Velocity Loss as a Critical Variable Determining the Adaptations to Strength Training. Med Sci Sports Exerc. 2020 Aug;52(8):1752-1762. doi: 10.1249/MSS.0000000000002295. PMID: 32049887.
NO Departamento Deporte e Informática
DS RIO
RD Apr 23, 2026