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Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension

[Purpose] The aim of this study was to identify the effects of initial position of the hip joint with changes in the hip joint angle on the respective muscle activities of the bilateral erector spinae (ES), unilateral gluteus maximus (GM), and biceps femoris (BF) and the amount of pelvic anterior ti...

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Autores principales: Yoon, Ji-Yeon, Lee, Mi-Ra, An, Duk-Hyun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Society of Physical Therapy Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4434008/
https://www.ncbi.nlm.nih.gov/pubmed/25995587
http://dx.doi.org/10.1589/jpts.27.1195
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author Yoon, Ji-Yeon
Lee, Mi-Ra
An, Duk-Hyun
author_facet Yoon, Ji-Yeon
Lee, Mi-Ra
An, Duk-Hyun
author_sort Yoon, Ji-Yeon
collection PubMed
description [Purpose] The aim of this study was to identify the effects of initial position of the hip joint with changes in the hip joint angle on the respective muscle activities of the bilateral erector spinae (ES), unilateral gluteus maximus (GM), and biceps femoris (BF) and the amount of pelvic anterior tilt during prone hip extension (PHE). [Subjects] Fifteen healthy volunteers were enrolled in this study. [Methods] The subjects performed PHE in three positions: neutral, 20°, and 45° flexed hip joint. The activities of the ES, GM, and BF were measured using surface electromyography, and kinematic values for pelvic anterior tilt were calculated using a motion capture system. [Results] There was a significant decrease in muscle activity of the contralateral ES at 45°, and an increase in the GM muscle activity and decrease in the BF muscle activity at 20°. The amount of pelvic anterior tilt was lower at 20°. [Conclusion] These results suggest that a hip flexion position of 20° would have an advantage over the other measured positions.
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spelling pubmed-44340082015-05-20 Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension Yoon, Ji-Yeon Lee, Mi-Ra An, Duk-Hyun J Phys Ther Sci Original Article [Purpose] The aim of this study was to identify the effects of initial position of the hip joint with changes in the hip joint angle on the respective muscle activities of the bilateral erector spinae (ES), unilateral gluteus maximus (GM), and biceps femoris (BF) and the amount of pelvic anterior tilt during prone hip extension (PHE). [Subjects] Fifteen healthy volunteers were enrolled in this study. [Methods] The subjects performed PHE in three positions: neutral, 20°, and 45° flexed hip joint. The activities of the ES, GM, and BF were measured using surface electromyography, and kinematic values for pelvic anterior tilt were calculated using a motion capture system. [Results] There was a significant decrease in muscle activity of the contralateral ES at 45°, and an increase in the GM muscle activity and decrease in the BF muscle activity at 20°. The amount of pelvic anterior tilt was lower at 20°. [Conclusion] These results suggest that a hip flexion position of 20° would have an advantage over the other measured positions. The Society of Physical Therapy Science 2015-04-30 2015-04 /pmc/articles/PMC4434008/ /pubmed/25995587 http://dx.doi.org/10.1589/jpts.27.1195 Text en 2015©by the Society of Physical Therapy Science. Published by IPEC Inc. http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License.
spellingShingle Original Article
Yoon, Ji-Yeon
Lee, Mi-Ra
An, Duk-Hyun
Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
title Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
title_full Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
title_fullStr Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
title_full_unstemmed Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
title_short Effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
title_sort effect of initial position on the muscle activity of the hip extensors and amount of pelvic tilt during prone hip extension
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4434008/
https://www.ncbi.nlm.nih.gov/pubmed/25995587
http://dx.doi.org/10.1589/jpts.27.1195
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