Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface

BACKGROUND AND OBJECTIVE: Chronic ankle instability is a common injury in athletes that leads to postural control disorders. The aim of this study was to compare the effect of external focus of attention and postural task alone on center of pressure sway in athletes with chronic ankle instability an...

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Autores principales:	Gh Abolghasemi, SM Sohani, E Ebrahimi-Takamjani, R Salehi, Sh Asgari
Formato:	article
Lenguaje:	EN FA
Publicado:	Babol University of Medical Sciences 2020
Materias:	chronic ankle instability postural control external focus athlete. Medicine R Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/14576368156f4ed081fee4ce015d77c1
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spelling	oai:doaj.org-article:14576368156f4ed081fee4ce015d77c12021-11-09T10:15:55ZComparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface1561-41072251-7170https://doaj.org/article/14576368156f4ed081fee4ce015d77c12020-03-01T00:00:00Zhttp://jbums.org/article-1-9121-en.htmlhttps://doaj.org/toc/1561-4107https://doaj.org/toc/2251-7170BACKGROUND AND OBJECTIVE: Chronic ankle instability is a common injury in athletes that leads to postural control disorders. The aim of this study was to compare the effect of external focus of attention and postural task alone on center of pressure sway in athletes with chronic ankle instability and healthy athletes during dual task training. METHODS: This cross-sectional study was performed on 29 male volleyball athletes with a referral from a specialist and 29 healthy athletes matched with the affected group in terms of age, height and weight. Subjects in the two groups were on the balance board with single-leg and double-leg stance, standing in the center of the force plate for 60 seconds and performing postural tasks alone and with external focus. The degree of displacement of the pressure center was measured to investigate the variables of standard deviation of amplitude and mean velocity. FINDINGS: In double-leg stance, standard deviation of amplitude in medio-lateral (14.2±2.1) and anterior-posterior (16.7±3.3), mean velocity in medio-lateral (39.2±9.8) and anterior-posterior (40.7±6.1) directions in patients during external focus were significantly less than the standard deviation of amplitude in medio-lateral (12.2±1.5) and anterior-posterior (13.9±2.4), mean velocity in medio-lateral (46.2±13.1) and anterior-posterior (48.4±9.6) directions during the single task. In single-leg stance, standard deviation of amplitude in medio-lateral (16.1±2.1) and anterior-posterior (13.1±1.7), mean velocity in medio-lateral (42.2±13.3) and anterior-posterior (40.7±8.6) directions in patients during external focus were significantly less than the standard deviation of amplitude in medio-lateral (11.1±2.1) and anterior-posterior (17.4±3.3), mean velocity in medio-lateral (47.8±16.6) and anterior-posterior (55.2±17.4) directions during the single task. CONCLUSION: The results of the study showed that external focus task leads to distraction from postural control and reduces postural sway in athletes with chronic ankle instability.Gh AbolghasemiSM SohaniE Ebrahimi-TakamjaniR SalehiSh AsgariBabol University of Medical Sciencesarticlechronic ankle instabilitypostural controlexternal focusathlete.MedicineRMedicine (General)R5-920ENFAMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, Vol 22, Iss 1, Pp 298-303 (2020)
institution	DOAJ
collection	DOAJ
language	EN FA
topic	chronic ankle instability postural control external focus athlete. Medicine R Medicine (General) R5-920
spellingShingle	chronic ankle instability postural control external focus athlete. Medicine R Medicine (General) R5-920 Gh Abolghasemi SM Sohani E Ebrahimi-Takamjani R Salehi Sh Asgari Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface
description	BACKGROUND AND OBJECTIVE: Chronic ankle instability is a common injury in athletes that leads to postural control disorders. The aim of this study was to compare the effect of external focus of attention and postural task alone on center of pressure sway in athletes with chronic ankle instability and healthy athletes during dual task training. METHODS: This cross-sectional study was performed on 29 male volleyball athletes with a referral from a specialist and 29 healthy athletes matched with the affected group in terms of age, height and weight. Subjects in the two groups were on the balance board with single-leg and double-leg stance, standing in the center of the force plate for 60 seconds and performing postural tasks alone and with external focus. The degree of displacement of the pressure center was measured to investigate the variables of standard deviation of amplitude and mean velocity. FINDINGS: In double-leg stance, standard deviation of amplitude in medio-lateral (14.2±2.1) and anterior-posterior (16.7±3.3), mean velocity in medio-lateral (39.2±9.8) and anterior-posterior (40.7±6.1) directions in patients during external focus were significantly less than the standard deviation of amplitude in medio-lateral (12.2±1.5) and anterior-posterior (13.9±2.4), mean velocity in medio-lateral (46.2±13.1) and anterior-posterior (48.4±9.6) directions during the single task. In single-leg stance, standard deviation of amplitude in medio-lateral (16.1±2.1) and anterior-posterior (13.1±1.7), mean velocity in medio-lateral (42.2±13.3) and anterior-posterior (40.7±8.6) directions in patients during external focus were significantly less than the standard deviation of amplitude in medio-lateral (11.1±2.1) and anterior-posterior (17.4±3.3), mean velocity in medio-lateral (47.8±16.6) and anterior-posterior (55.2±17.4) directions during the single task. CONCLUSION: The results of the study showed that external focus task leads to distraction from postural control and reduces postural sway in athletes with chronic ankle instability.
format	article
author	Gh Abolghasemi SM Sohani E Ebrahimi-Takamjani R Salehi Sh Asgari
author_facet	Gh Abolghasemi SM Sohani E Ebrahimi-Takamjani R Salehi Sh Asgari
author_sort	Gh Abolghasemi
title	Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface
title_short	Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface
title_full	Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface
title_fullStr	Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface
title_full_unstemmed	Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface
title_sort	comparison of the effect of external focus on postural control in athletes with or without chronic ankle instability while standing on an unstable surface
publisher	Babol University of Medical Sciences
publishDate	2020
url	https://doaj.org/article/14576368156f4ed081fee4ce015d77c1
work_keys_str_mv	AT ghabolghasemi comparisonoftheeffectofexternalfocusonposturalcontrolinathleteswithorwithoutchronicankleinstabilitywhilestandingonanunstablesurface AT smsohani comparisonoftheeffectofexternalfocusonposturalcontrolinathleteswithorwithoutchronicankleinstabilitywhilestandingonanunstablesurface AT eebrahimitakamjani comparisonoftheeffectofexternalfocusonposturalcontrolinathleteswithorwithoutchronicankleinstabilitywhilestandingonanunstablesurface AT rsalehi comparisonoftheeffectofexternalfocusonposturalcontrolinathleteswithorwithoutchronicankleinstabilitywhilestandingonanunstablesurface AT shasgari comparisonoftheeffectofexternalfocusonposturalcontrolinathleteswithorwithoutchronicankleinstabilitywhilestandingonanunstablesurface
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Comparison of the Effect of External Focus on Postural Control in Athletes with or without Chronic Ankle Instability while Standing on an Unstable Surface

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