Physical Therapy Korea
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Phys. Ther. Korea 2022; 29(1): 11-18
Published online February 20, 2022
https://doi.org/10.12674/ptk.2022.29.1.11
© Korean Research Society of Physical Therapy
3개의 서로 다른 엉덩관절 벌림 각도에 따른 교각 운동 중 큰볼기근, 뒤넙다리근, 뭇갈래근의 근활성도 비교
최지석1,2, 장태진1,2, 전인철1,2
1호서대학교 생명보건대학 물리치료학과, 2호서대학교 스마트 헬스케어 융복합 연구센터
Comparison of Gluteus Maximus, Hamstring and Multifidus Muscle Activities During Bridge Exercises According to Three Different Hip Abduction Angles
Ji-Seok Choi1,2 
, PT, Tae-Jin Jang1,2 , PT, In-Cheol Jeon1,2 , PT, PhD
1Department of Physical Therapy, College of Life and Health Science, Hoseo University, 2Smart Healthcare Convergence Research Center, Hoseo University, Asan, Korea
Correspondence to: In-Cheol Jeon
E-mail: jeon6984@hoseo.edu
https://orcid.org/0000-0002-6549-6866
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Background: Muscle activities of gluteus maximus (GM) and hamstring (HAM) have important roles in the stability and mobility of the hip joint during various functional activities including bridge and prone hip extension exercises.
Objects: The purpose of this study is to investigate muscle activities of GM, multifidus (MF) and HAM during three different bridge exercises in healthy individuals.
Methods: Twenty healthy subjects were participated. Electromyography device was used to measure muscle activities of GM, MF and HAM. Each subject was asked to perform three different bridge exercises with hip abduction (0°, 15°, 30°) in random order. One-way repeated measures analysis of the variance and a Bonferroni post hoc test were used. Statistical significance was set at α = 0.01.
Results: The muscle activity of GM was significantly different among three conditions (hip abduction 0°, 15°, 30°) (adjusted p-value [Padj] < 0.01). The muscle activity of GM was significantly greater during bridge exercise with hip abduction 30° compared to 0° and 15° (Padj < 0.01). There was no significant difference in the muscle activity of MF and HAM muscle (Padj > 0.01). The ratio of muscle activity (ratio = GM/HAM) during bridge exercise with hip abduction 30° was significant greater compared to the hip abduction angles 0° and 15° (Padj < 0.01).
Conclusion: Bridge exercise with hip abduction 30° can be recommended to selectively facilitate the muscle activity of GM and improve the ratio of muscle activity between GM and HAM.
Keywords: Bridge exercise, Gluteus maximus, Hamstring muscle, Hip abduction, Muscle activation
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Original Article
Phys. Ther. Korea 2022; 29(1): 11-18
Published online February 20, 2022 https://doi.org/10.12674/ptk.2022.29.1.11
Copyright © Korean Research Society of Physical Therapy.
3개의 서로 다른 엉덩관절 벌림 각도에 따른 교각 운동 중 큰볼기근, 뒤넙다리근, 뭇갈래근의 근활성도 비교
최지석1,2, 장태진1,2, 전인철1,2
1호서대학교 생명보건대학 물리치료학과, 2호서대학교 스마트 헬스케어 융복합 연구센터
Comparison of Gluteus Maximus, Hamstring and Multifidus Muscle Activities During Bridge Exercises According to Three Different Hip Abduction Angles
Ji-Seok Choi1,2 , PT, Tae-Jin Jang1,2 , PT, In-Cheol Jeon1,2 , PT, PhD
1Department of Physical Therapy, College of Life and Health Science, Hoseo University, 2Smart Healthcare Convergence Research Center, Hoseo University, Asan, Korea
Correspondence to:In-Cheol Jeon
E-mail: jeon6984@hoseo.edu
https://orcid.org/0000-0002-6549-6866
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: Muscle activities of gluteus maximus (GM) and hamstring (HAM) have important roles in the stability and mobility of the hip joint during various functional activities including bridge and prone hip extension exercises.
Objects: The purpose of this study is to investigate muscle activities of GM, multifidus (MF) and HAM during three different bridge exercises in healthy individuals.
Methods: Twenty healthy subjects were participated. Electromyography device was used to measure muscle activities of GM, MF and HAM. Each subject was asked to perform three different bridge exercises with hip abduction (0°, 15°, 30°) in random order. One-way repeated measures analysis of the variance and a Bonferroni post hoc test were used. Statistical significance was set at α = 0.01.
Results: The muscle activity of GM was significantly different among three conditions (hip abduction 0°, 15°, 30°) (adjusted p-value [Padj] < 0.01). The muscle activity of GM was significantly greater during bridge exercise with hip abduction 30° compared to 0° and 15° (Padj < 0.01). There was no significant difference in the muscle activity of MF and HAM muscle (Padj > 0.01). The ratio of muscle activity (ratio = GM/HAM) during bridge exercise with hip abduction 30° was significant greater compared to the hip abduction angles 0° and 15° (Padj < 0.01).
Conclusion: Bridge exercise with hip abduction 30° can be recommended to selectively facilitate the muscle activity of GM and improve the ratio of muscle activity between GM and HAM.
Keywords: Bridge exercise, Gluteus maximus, Hamstring muscle, Hip abduction, Muscle activation
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Table 1 . Changes of muscle activities for three different hip abduction angles.
Muscles Maximal voluntary isometric contraction F-value p-value 0˚ 15˚ 30˚ Rt.MF 58.03 ± 12.66 54.76 ± 10.10 56.88 ± 13.65 3.146 0.067 Lt.MF 60.89 ± 16.07 57.04 ± 13.15 60.02 ± 15.54 4.534 0.025 Rt.GM 22.27 ± 13.28 27.57 ± 13.66 41.91 ± 20.96 15.989 < 0.01* Rt.BF 22.86 ± 11.29 23.14 ± 12.50 24.60 ± 12.24 0.362 0.701 Values are presented as mean ± standard deviation. Rt.MF, right multifidus; Lt.MF, left multifidus; Rt.GM, right gluteus maximus; Rt.BF, right biceps femoris. *Significant difference..
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Table 2 . Changes of GM/BF electromyography amplitude ratio for three different hip abduction angles.
Muscles Ratio F-value p-value 0˚ 15˚ 30˚ GM/BF 1.11 ± 0.68 1.55 ± 1.13 2.10 ± 1.43 9.138 < 0.01* Values are presented as mean ± standard deviation. GM, gluteus maximus; BF, biceps femoris. *Significant difference..
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Table 3 . Changes of GM/MF electromyography amplitude ratio for three different hip abduction angles.
Muscles Ratio F-value p-value 0˚ 15˚ 30˚ GM/Rt.MF 0.39 ± 0.25 0.52 ± 0.30 0.74 ± 0.47 12.156 < 0.01* GM/Lt.MF 0.39 ± 0.28 0.51 ± 0.31 0.74 ± 0.47 12.704 < 0.01* Values are presented as mean ± standard deviation. GM, gluteus maximus; Rt.MF, right multifidus; Lt.MF, left multifidus. *Significant difference..