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THE ROLE OF LEG AND TRUNK MUSCLES PROPRIOCEPTION ON STATIC AND DYNAMIC POSTURAL CONTROL

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Author(s): SEYED Hossein Hosseinimehr | ALI ASGHAR Norasteh

Journal: Citius Altius Fortius
ISSN 1582-8131

Volume: 26;
Issue: 1;
Start page: 83;
Date: 2010;
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Keywords: Vibration | postural control | Proprioception | Leg and trunk muscle

ABSTRACT
The proprioception information is a prerequisite for balance, body’s navigation system, and the movement coordinator. Due to changes between the angles of ankle, knee, and hip joints the aforementioned information are important in the coordination of the limbs and postural balance. The aim of this study was to investigate therole of leg and trunk muscles proprioception on static and dynamic postural control. Thirty males students of physical education and sport sciences (age =21.23 ± 2.95 years, height = 170.4 ± 5.1 cm, and weight = 70.7 ± 5.6 kg) participated in this study volunteered. Vibration (100HZ) was used to disturb of proprioception. Vibrationoperated on leg muscle (gasterocnemius) and trunk muscles (erector spine muscle, at L1 level). Leg stance time and Star Excursion Balance Test were used for evaluation of static and dynamic postural control respectively.Subjects performed pre and post (with operated vibration) leg stance time and star excursion balance test. Paired sample test used for investigation the effect of vibration on leg and trunk muscles in static and dynamic postural control. Result of this study showed in static postural control, there is no significant difference between pre and post test (operated vibration) in leg and trunk muscles (p≤0.05). In contrast there is significant difference indynamic postural control between pre and post test in leg muscles in 8 directions of star excursion balance test (p≤0.05) while there is only significant difference in trunk muscle in antrolateral and lateral of star excursion balance test (p≤0.05). During physical training such conditions like fatigue and injury can disturbproprioceptions’ information. Thus, due to the importance of this information we recommend that coaches'additionally specific trainings any sport used specific exercises to enhance the proprioception information
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