Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/69297
Título: Effects of moderate vs. high iso-inertial loads on power, velocity, work and hamstring contractile function after flywheel resistance exercise
Autores/as: Piqueras-Sanchiz, Francisco
Martín Rodríguez, Saúl 
Manuel Martinez-Aranda, Luis
Lopes, Thiago Ribeiro
Raya-Gonzalez, Javier
Garcia-Garcia, Oscar
Nakamura, Fabio Yuzo
Clasificación UNESCO: 3313 Tecnología e ingeniería mecánicas
Palabras clave: Human Skeletal-Muscle
Eccentric-Overload
Measurement Error
Neural-Control
Leg Stiffness, et al.
Fecha de publicación: 2019
Publicación seriada: PLoS ONE 
Resumen: Flywheel iso-inertial training has been shown to positively affect muscular strength and sports performance (e. g. agility). However, implementing such eccentrically-biased training during a microcycle needs to be carefully planned due to its purported effects on the neuromuscular system that can last for hours/days post-exercise. This study aimed at using tensiomyography to verify the effects of different inertias during the hip extension exercise on the contractile function of biceps femoris and semitendinosus muscles of the dominant leg for up to 72 hours post-exercise. Thirty participants (24.4 +/- 3.4 years) were divided into 0.075 or 0.1 kg.m(2) inertia groups and a control group. Magnitude-based analysis was used for the comparisons. Several tensiomyography parameters were changed after both intensities of flywheel exercise (in most cases indicating a decrement in muscle stiffness), whereas most between-group differences suggested that in the semitendinosus muscle, the higher inertia (0.1 kg.m(2)) influenced the muscle stiffness parameters more (e.g. Dm = maximal radial displacement) while in the biceps femoris, the greater effect was caused by the lower inertia (0.075 kg.m(2)) (e.g. Tc = contraction time). Most changes in contractile properties of the investigated muscles occur within 24 hours post-exercise, but can persist for up to 72 hours. However, higher inertia (0.1 kg.m(2)) influenced the stiffness of the semitendinosus muscle more, while in the biceps femoris, the greater effect was caused by the lower inertia (0.075 kg.m(2)). These findings should be considered by practitioners when prescribing flywheel iso-inertial training.
URI: http://hdl.handle.net/10553/69297
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0211700
Fuente: Plos One[ISSN 1932-6203],v. 14 (2)
Colección:Artículos
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Effects of moderate vs. high iso-inertial loads on power, velocity, work and hamstring contractile function after flywheel resistance exercis
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