Inertial flywheel knee- and hip-dominant hamstring strength exercises in professional soccer players: Muscle use and velocity-based (mechanical) eccentric overload

The primary aim of the present study was to analyze mechanical responses during inertial knee- and hip-dominant hamstring strengthening exercises (flywheel leg-curl and hip-extension in conic-pulley), and the secondary aim was to measure and compare regional muscle use using functional magnetic reso...

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Bibliographic Details
Published in:PloS one 2020-10, Vol.15 (10), p.e0239977-e0239977
Main Authors: Suarez-Arrones, Luis, Núñez, F. Javier, Lara-Lopez, Pilar, Di Salvo, Valter, Méndez-Villanueva, Alberto
Format: Article
Language:English
Subjects:
Athletic recruitment
Biology and Life Sciences
Care and treatment
Exercise
Exercise therapy
Flywheels
Functional magnetic resonance imaging
Hamstring muscles
Health aspects
Hip
Informatics
Kinematics
Knee
Leg
Magnetic resonance
Magnetic resonance imaging
Medicine and Health Sciences
Methods
Muscle function
Muscles
Overloading
Physical education
Physical Sciences
Physical training
Physiological aspects
Professional soccer
Relaxation time
Research and Analysis Methods
Soccer
Soccer players
Social Sciences
Software
Sports injuries
Sports training
Strength training
Strengthening exercises
Velocity
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Summary:The primary aim of the present study was to analyze mechanical responses during inertial knee- and hip-dominant hamstring strengthening exercises (flywheel leg-curl and hip-extension in conic-pulley), and the secondary aim was to measure and compare regional muscle use using functional magnetic resonance imaging. Mean power, peak power, mean velocity, peak velocity and time in the concentric (CON) and eccentric (ECC) phases were measured. The transverse relaxation time (T2) shift from pre- to post-exercise were calculated for the biceps femoris long (BFl) and short (BFs) heads, semitendinosus (ST) and semimembranosus (SM) muscles at proximal, middle and distal areas of the muscle length. Peak and mean power in flywheel leg-curl were higher during the CON than the ECC phase (p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0239977