Greater eccentric exercise-induced muscle damage by large versus
small range of motion with the same end-point

AG Fochi; F Damas; R Berton; I Alvarez; M Miquelini; TF Salvini; CA Libardi

doi:10.5604/20831862.1208480

eISSN: 2083-1862
ISSN: 0860-021X

Biology of Sport

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3/2016
vol. 33

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abstract:

Original paper

Greater eccentric exercise-induced muscle damage by large versus small range of motion with the same end-point

AG Fochi

¹

,

F Damas

²

,

R Berton

³

,

I Alvarez

¹

,

M Miquelini

¹

,

TF Salvini

⁴

,

CA Libardi

¹

Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of São Carlos, São Carlos, Brazil
School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
School of Physical Education, State University of Campinas, Campinas, São Paulo, Brazil
Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brazil

Biol. Sport 2016;33:285-289

DOI: https://doi.org/10.5604/20831862.1208480

Online publish date: 2016/08/16

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Several factors can affect the magnitude of eccentric exercise (ECC)-induced muscle damage, but little is known regarding the effect of the range of motion (ROM) in ECC-induced muscle damage. The purpose of this study was to investigate whether elbow flexor ECC with 120° of ROM (from 60° of elbow flexion until elbow full extension – 180° [120ROM]) induces a greater magnitude of muscle damage compared with a protocol with 60° of ROM (120-180° of elbow flexion [60ROM]). Twelve healthy young men (age: 22 ± 3.1 years; height: 1.75 ± 0.05 m; body mass: 75.6 ± 13.6 kg) performed the ECC with 120ROM and 60ROM using different arms in a random order separated by 2 weeks and were tested before and 24, 48, 72 and 96 h after ECC for maximal voluntary isometric contraction torque (MVC-ISO), ROM and muscle soreness. The 120ROM protocol showed greater changes and effect sizes (ES) for MVC-ISO (-35%, ES: 1.97), ROM (-11.5°, ES: 1.27) and muscle soreness (19 mm, ES: 1.18) compared with the 60ROM protocol (-23%, ES: 0.93; -12%, ES: 0.56; 17°, ES: 0.63; 8 mm, ES: 1.07, respectively). In conclusion, ECC of the elbow flexors with 120° of ROM promotes a greater magnitude of muscle damage compared with a protocol with 60° of ROM, even when both protocols are performed at long muscle lengths.

keywords:

Greater eccentric exercise-induced muscle damage by large versus small range of motion with the same end-point

AG Fochi 1 , F Damas 2 , R Berton 3 , I Alvarez 1 , M Miquelini 1 , TF Salvini 4 , CA Libardi 1

Muscle soreness, Lengthening contractions, Resistance exercise, Isokinetic

AG Fochi

¹

,

F Damas

²

,

R Berton

³

,

I Alvarez

¹

,

M Miquelini

¹

,

TF Salvini

⁴

,

CA Libardi

¹