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Unilateral plantar flexors static-stretching effects on ipsilateral and contralateral jump measures

The aim of this study was to evaluate the acute effects of unilateral ankle plantar flexors static-stretching (SS) on the passive range of movement (ROM) of the stretched limb, surface electromyography (sEMG) and single-leg bounce drop jump (SBDJ) performance measures of the ipsilateral stretched an...

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Published in:Journal of sports science & medicine 2015-06, Vol.14 (2), p.315-321
Main Authors: da Silva, Josinaldo Jarbas, Behm, David George, Gomes, Willy Andrade, Silva, Fernando Henrique Domingues de Oliveira, Soares, Enrico Gori, Serpa, Érica Paes, Vilela Junior, Guanis de Barros, Lopes, Charles Ricardo, Marchetti, Paulo Henrique
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creator da Silva, Josinaldo Jarbas
Behm, David George
Gomes, Willy Andrade
Silva, Fernando Henrique Domingues de Oliveira
Soares, Enrico Gori
Serpa, Érica Paes
Vilela Junior, Guanis de Barros
Lopes, Charles Ricardo
Marchetti, Paulo Henrique
description The aim of this study was to evaluate the acute effects of unilateral ankle plantar flexors static-stretching (SS) on the passive range of movement (ROM) of the stretched limb, surface electromyography (sEMG) and single-leg bounce drop jump (SBDJ) performance measures of the ipsilateral stretched and contralateral non-stretched lower limbs. Seventeen young men (24 ± 5 years) performed SBDJ before and after (stretched limb: immediately post-stretch, 10 and 20 minutes and non-stretched limb: immediately post-stretch) unilateral ankle plantar flexor SS (6 sets of 45s/15s, 70-90% point of discomfort). SBDJ performance measures included jump height, impulse, time to reach peak force, contact time as well as the sEMG integral (IEMG) and pre-activation (IEMGpre-activation) of the gastrocnemius lateralis. Ankle dorsiflexion passive ROM increased in the stretched limb after the SS (pre-test: 21 ± 4° and post-test: 26.5 ± 5°, p < 0.001). Post-stretching decreases were observed with peak force (p = 0.029), IEMG (P
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Seventeen young men (24 ± 5 years) performed SBDJ before and after (stretched limb: immediately post-stretch, 10 and 20 minutes and non-stretched limb: immediately post-stretch) unilateral ankle plantar flexor SS (6 sets of 45s/15s, 70-90% point of discomfort). SBDJ performance measures included jump height, impulse, time to reach peak force, contact time as well as the sEMG integral (IEMG) and pre-activation (IEMGpre-activation) of the gastrocnemius lateralis. Ankle dorsiflexion passive ROM increased in the stretched limb after the SS (pre-test: 21 ± 4° and post-test: 26.5 ± 5°, p &lt; 0.001). Post-stretching decreases were observed with peak force (p = 0.029), IEMG (P&lt;0.001), and IEMGpre-activation (p = 0.015) in the stretched limb; as well as impulse (p = 0.03), and jump height (p = 0.032) in the non-stretched limb. In conclusion, SS effectively increased passive ankle ROM of the stretched limb, and transiently (less than 10 minutes) decreased muscle peak force and pre-activation. The decrease of jump height and impulse for the non-stretched limb suggests a SS-induced central nervous system inhibitory effect. Key pointsWhen considering whether or not to SS prior to athletic activities, one must consider the potential positive effects of increased ankle dorsiflexion motion with the potential deleterious effects of power and muscle activity during a simple jumping task or as part of the rehabilitation process.Since decreased jump performance measures can persist for 10 minutes in the stretched leg, the timing of SS prior to performance must be taken into consideration.Athletes, fitness enthusiasts and therapists should also keep in mind that SS one limb has generalized effects upon contralateral limbs as well.</description><identifier>ISSN: 1303-2968</identifier><identifier>EISSN: 1303-2968</identifier><identifier>PMID: 25983580</identifier><language>eng</language><publisher>Turkey: Journal of Sports Science and Medicine</publisher><subject>Ankle ; Biomechanics ; Employment ; Exercise ; Fatigue ; Force ; Jumping ; Medicine ; Muscle function ; Physiological aspects ; Physiology ; Sports medicine ; Strength training ; Studies</subject><ispartof>Journal of sports science &amp; medicine, 2015-06, Vol.14 (2), p.315-321</ispartof><rights>COPYRIGHT 2015 Journal of Sports Science and Medicine</rights><rights>COPYRIGHT 2015 Journal of Sports Science and Medicine</rights><rights>2015. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Journal of Sports Science and Medicine 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2295529512/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2295529512?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,25753,37012,37013,44590,53791,53793,75126</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25983580$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>da Silva, Josinaldo Jarbas</creatorcontrib><creatorcontrib>Behm, David George</creatorcontrib><creatorcontrib>Gomes, Willy Andrade</creatorcontrib><creatorcontrib>Silva, Fernando Henrique Domingues de Oliveira</creatorcontrib><creatorcontrib>Soares, Enrico Gori</creatorcontrib><creatorcontrib>Serpa, Érica Paes</creatorcontrib><creatorcontrib>Vilela Junior, Guanis de Barros</creatorcontrib><creatorcontrib>Lopes, Charles Ricardo</creatorcontrib><creatorcontrib>Marchetti, Paulo Henrique</creatorcontrib><title>Unilateral plantar flexors static-stretching effects on ipsilateral and contralateral jump measures</title><title>Journal of sports science &amp; medicine</title><addtitle>J Sports Sci Med</addtitle><description>The aim of this study was to evaluate the acute effects of unilateral ankle plantar flexors static-stretching (SS) on the passive range of movement (ROM) of the stretched limb, surface electromyography (sEMG) and single-leg bounce drop jump (SBDJ) performance measures of the ipsilateral stretched and contralateral non-stretched lower limbs. Seventeen young men (24 ± 5 years) performed SBDJ before and after (stretched limb: immediately post-stretch, 10 and 20 minutes and non-stretched limb: immediately post-stretch) unilateral ankle plantar flexor SS (6 sets of 45s/15s, 70-90% point of discomfort). SBDJ performance measures included jump height, impulse, time to reach peak force, contact time as well as the sEMG integral (IEMG) and pre-activation (IEMGpre-activation) of the gastrocnemius lateralis. Ankle dorsiflexion passive ROM increased in the stretched limb after the SS (pre-test: 21 ± 4° and post-test: 26.5 ± 5°, p &lt; 0.001). Post-stretching decreases were observed with peak force (p = 0.029), IEMG (P&lt;0.001), and IEMGpre-activation (p = 0.015) in the stretched limb; as well as impulse (p = 0.03), and jump height (p = 0.032) in the non-stretched limb. 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medicine</jtitle><addtitle>J Sports Sci Med</addtitle><date>2015-06-01</date><risdate>2015</risdate><volume>14</volume><issue>2</issue><spage>315</spage><epage>321</epage><pages>315-321</pages><issn>1303-2968</issn><eissn>1303-2968</eissn><abstract>The aim of this study was to evaluate the acute effects of unilateral ankle plantar flexors static-stretching (SS) on the passive range of movement (ROM) of the stretched limb, surface electromyography (sEMG) and single-leg bounce drop jump (SBDJ) performance measures of the ipsilateral stretched and contralateral non-stretched lower limbs. Seventeen young men (24 ± 5 years) performed SBDJ before and after (stretched limb: immediately post-stretch, 10 and 20 minutes and non-stretched limb: immediately post-stretch) unilateral ankle plantar flexor SS (6 sets of 45s/15s, 70-90% point of discomfort). SBDJ performance measures included jump height, impulse, time to reach peak force, contact time as well as the sEMG integral (IEMG) and pre-activation (IEMGpre-activation) of the gastrocnemius lateralis. Ankle dorsiflexion passive ROM increased in the stretched limb after the SS (pre-test: 21 ± 4° and post-test: 26.5 ± 5°, p &lt; 0.001). Post-stretching decreases were observed with peak force (p = 0.029), IEMG (P&lt;0.001), and IEMGpre-activation (p = 0.015) in the stretched limb; as well as impulse (p = 0.03), and jump height (p = 0.032) in the non-stretched limb. In conclusion, SS effectively increased passive ankle ROM of the stretched limb, and transiently (less than 10 minutes) decreased muscle peak force and pre-activation. The decrease of jump height and impulse for the non-stretched limb suggests a SS-induced central nervous system inhibitory effect. Key pointsWhen considering whether or not to SS prior to athletic activities, one must consider the potential positive effects of increased ankle dorsiflexion motion with the potential deleterious effects of power and muscle activity during a simple jumping task or as part of the rehabilitation process.Since decreased jump performance measures can persist for 10 minutes in the stretched leg, the timing of SS prior to performance must be taken into consideration.Athletes, fitness enthusiasts and therapists should also keep in mind that SS one limb has generalized effects upon contralateral limbs as well.</abstract><cop>Turkey</cop><pub>Journal of Sports Science and Medicine</pub><pmid>25983580</pmid><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects Ankle
Biomechanics
Employment
Exercise
Fatigue
Force
Jumping
Medicine
Muscle function
Physiological aspects
Physiology
Sports medicine
Strength training
Studies
title Unilateral plantar flexors static-stretching effects on ipsilateral and contralateral jump measures
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