Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players

This study’s aim was to analyze muscle activation and kinematics of sled-pushing and resisted-parachute sprinting with three load conditions on an instrumentalized SKILLRUN<sup>®</sup> treadmill. Nine male amateur rugby union players (21.3 ± 4.3 years, 75.8 ± 10.2 kg, 176.6 ± 8.8 cm) per...

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Autores principales:	Antonio Martínez-Serrano, Elena Marín-Cascales, Konstantinos Spyrou, Tomás T. Freitas, Pedro E. Alcaraz
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	team-sports performance muscle activation loaded sprint sled-push Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/369416669b80402299435a9958d9d859
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spelling	oai:doaj.org-article:369416669b80402299435a9958d9d8592021-11-25T18:56:47ZElectromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players10.3390/s212274821424-8220https://doaj.org/article/369416669b80402299435a9958d9d8592021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7482https://doaj.org/toc/1424-8220This study’s aim was to analyze muscle activation and kinematics of sled-pushing and resisted-parachute sprinting with three load conditions on an instrumentalized SKILLRUN<sup>®</sup> treadmill. Nine male amateur rugby union players (21.3 ± 4.3 years, 75.8 ± 10.2 kg, 176.6 ± 8.8 cm) performed a sled-push session consisting of three 15-m repetitions at 20%, 55% and 90% body mas and another resisted-parachute session using three different parachute sizes (XS, XL and 3XL). Sprinting kinematics and muscle activity of three lower-limb muscles (biceps femoris (BF), vastus lateralis (VL) and gastrocnemius medialis (GM)) were measured. A repeated-measures analysis of variance (RM-ANOVA) showed that higher loads during the sled-push increased (VL) (<i>p</i> ≤ 0.001) and (GM) (<i>p</i> ≤ 0.001) but not (BF) (<i>p</i> = 0.278) activity. Furthermore, it caused significant changes in sprinting kinematics, stiffness and joint angles. Resisted-parachute sprinting did not change kinematics or muscle activation, despite producing a significant overload (i.e., speed loss). In conclusion, increased sled-push loading caused disruptions in sprinting technique and altered lower-limb muscle activation patterns as opposed to the resisted-parachute. These findings might help practitioners determine the more adequate resisted sprint exercise and load according to the training objective (e.g., power production or speed performance).Antonio Martínez-SerranoElena Marín-CascalesKonstantinos SpyrouTomás T. FreitasPedro E. AlcarazMDPI AGarticleteam-sportsperformancemuscle activationloaded sprintsled-pushChemical technologyTP1-1185ENSensors, Vol 21, Iss 7482, p 7482 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	team-sports performance muscle activation loaded sprint sled-push Chemical technology TP1-1185
spellingShingle	team-sports performance muscle activation loaded sprint sled-push Chemical technology TP1-1185 Antonio Martínez-Serrano Elena Marín-Cascales Konstantinos Spyrou Tomás T. Freitas Pedro E. Alcaraz Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players
description	This study’s aim was to analyze muscle activation and kinematics of sled-pushing and resisted-parachute sprinting with three load conditions on an instrumentalized SKILLRUN<sup>®</sup> treadmill. Nine male amateur rugby union players (21.3 ± 4.3 years, 75.8 ± 10.2 kg, 176.6 ± 8.8 cm) performed a sled-push session consisting of three 15-m repetitions at 20%, 55% and 90% body mas and another resisted-parachute session using three different parachute sizes (XS, XL and 3XL). Sprinting kinematics and muscle activity of three lower-limb muscles (biceps femoris (BF), vastus lateralis (VL) and gastrocnemius medialis (GM)) were measured. A repeated-measures analysis of variance (RM-ANOVA) showed that higher loads during the sled-push increased (VL) (<i>p</i> ≤ 0.001) and (GM) (<i>p</i> ≤ 0.001) but not (BF) (<i>p</i> = 0.278) activity. Furthermore, it caused significant changes in sprinting kinematics, stiffness and joint angles. Resisted-parachute sprinting did not change kinematics or muscle activation, despite producing a significant overload (i.e., speed loss). In conclusion, increased sled-push loading caused disruptions in sprinting technique and altered lower-limb muscle activation patterns as opposed to the resisted-parachute. These findings might help practitioners determine the more adequate resisted sprint exercise and load according to the training objective (e.g., power production or speed performance).
format	article
author	Antonio Martínez-Serrano Elena Marín-Cascales Konstantinos Spyrou Tomás T. Freitas Pedro E. Alcaraz
author_facet	Antonio Martínez-Serrano Elena Marín-Cascales Konstantinos Spyrou Tomás T. Freitas Pedro E. Alcaraz
author_sort	Antonio Martínez-Serrano
title	Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players
title_short	Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players
title_full	Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players
title_fullStr	Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players
title_full_unstemmed	Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players
title_sort	electromyography, stiffness and kinematics of resisted sprint training in the specialized skillrun<sup>®</sup> treadmill using different load conditions in rugby players
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/369416669b80402299435a9958d9d859
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Electromyography, Stiffness and Kinematics of Resisted Sprint Training in the Specialized SKILLRUN<sup>®</sup> Treadmill Using Different Load Conditions in Rugby Players

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