Cross-education effects of unilateral accentuated eccentric isoinertial resistance training on lean mass and function
Document Type
Journal Article
Publication Title
Scandinavian Journal of Medicine and Science in Sports
Volume
32
Issue
4
First Page
672
Last Page
684
PubMed ID
34851533
Publisher
Wiley
School
School of Medical and Health Sciences / Centre for Exercise and Sports Science Research
RAS ID
40576
Funders
Ministerio de Educación, Cultura y Deporte, Gobierno de España, Grant/Award Number: FPU014/05732
Abstract
Purpose: We investigated the effects of three different unilateral isoinertial resistance training protocols with eccentric overload on changes in lean mass and muscle function of trained (TL) and contralateral non-trained (NTL) legs. Methods: Physically active university students were randomly assigned to one of three training groups or a control group (n = 10/group). Participants in the training groups performed dominant leg isoinertial squat training twice a week for 6 weeks (4 sets of 7 repetitions) using either an electric-motor device with an eccentric phase velocity of 100% (EM100) or 150% (EM150) of concentric phase velocity or a conventional flywheel device (FW) with the same relative inertial load. Changes in thigh lean mass, unilateral leg-press one-repetition maximum (1-RM), muscle power at 40–80% 1-RM, and unilateral vertical jump height before and after training were compared between the groups and between TL and NTL. Results: No changes in any variable were found for the control group. In TL, all training groups showed similar increases (p < 0.05) in 1-RM strength (22.4–30.2%), lean tissue mass (2.5–5.8%), muscle power (8.8–21.7%), and vertical jump height (9.1–32.9%). In NTL, 1-RM strength increased 22.0–27.8% without significant differences between groups; however, increases in lean mass (p < 0.001) were observed for EM150 (3.5%) and FW (3.8%) only. Unilateral vertical jump height (6.0–32.9%) and muscle power (6.8–17.5%) also increased in NTL without significant differences between training groups. Conclusion: The three eccentric-overload resistance training modalities produced similar neuromuscular changes in both the trained and non-trained legs, suggesting that strong cross-education effects were induced by the eccentric-overload training.
DOI
10.1111/sms.14108
Access Rights
subscription content
Comments
Maroto‐Izquierdo, S., Nosaka, K., Blazevich, A. J., González‐Gallego, J., & de Paz, J. A. (2022). Cross‐education effects of unilateral accentuated eccentric isoinertial resistance training on lean mass and function. Scandinavian journal of medicine & science in sports, 32, p. 672-684. https://doi.org/10.1111/sms.14108