Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds
Objective: In recent years, it has been focused much attention on gait analysis. Factors such as speed, age and gender affect gait parameters. The purpose of the present study was to compare the electromyographic activity pattern of knee two-joint muscles between younger and older subjects in differ...
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| Format: | Article |
| Language: | fas |
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University of Social Welfare and Rehabilitation Sciences
2016-01-01
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| Series: | Journal of Rehabilitation |
| Subjects: | |
| Online Access: | http://rehabilitationj.uswr.ac.ir/browse.php?a_code=A-10-2013-1&slc_lang=en&sid=1 |
| _version_ | 1819230485703819264 |
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| author | Hamideh Khodaveisi Mehrdad Anbarian Maryam Khodaveisi |
| author_facet | Hamideh Khodaveisi Mehrdad Anbarian Maryam Khodaveisi |
| author_sort | Hamideh Khodaveisi |
| collection | DOAJ |
| description | Objective: In recent years, it has been focused much attention on gait analysis. Factors such as speed, age and gender affect gait parameters. The purpose of the present study was to compare the electromyographic activity pattern of knee two-joint muscles between younger and older subjects in different gait speeds.
Matterials & Methods: The method of current study was analytical cross-sectional method in which 15 healthy young men and 15 old men, were selected conveniently. Electromyographic activity of rectus femoris, biceps femoris, semitendinus and gastrocenemius were recorded during walking with preferred (100%), slow (80%) and fast (120%) speeds in a 10 meter walkway. Normalized RMSs of muscles were compared using RM-ANOVA and Tokey’s tests by SPSS 18 software.
Results: According to results, RMSs of rectus femoris in midstance (P<0.01) and gastrocenemius in loading response (P=0.02) phases in all walking speeds were higher in older subjects than in younger ones, and it increased with speed in both age groups (P<0.01). Biceps femoris RMS in terminal stance at 80% speed, was lower in older subjects than in younger ones (P=0.01) and it increased with walking speed (P=0.01). Semitendinus activity in loading and midstance phases at 120% speed was higher in older subjects than in younger ones (P<0.01), and it increased with speed in both age groups in swing phase (P<0.05).
Conclusion: According to the results, older subjects have more muscle co-contraction around knee at high speed in midstance phase than younger subjects. These age-related changes in muscle activity, leads to increase in joint stiffness and stability during single support, and probably play a role in reducing push off power at faster speeds. |
| first_indexed | 2024-12-23T11:29:49Z |
| format | Article |
| id | doaj.art-5f9dd1951ca44c1f9bce7deabc4a5246 |
| institution | Directory Open Access Journal |
| issn | 1607-2960 1607-2960 |
| language | fas |
| last_indexed | 2024-12-23T11:29:49Z |
| publishDate | 2016-01-01 |
| publisher | University of Social Welfare and Rehabilitation Sciences |
| record_format | Article |
| series | Journal of Rehabilitation |
| spelling | doaj.art-5f9dd1951ca44c1f9bce7deabc4a52462022-12-21T17:48:51ZfasUniversity of Social Welfare and Rehabilitation SciencesJournal of Rehabilitation1607-29601607-29602016-01-01164324333Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different SpeedsHamideh Khodaveisi0Mehrdad Anbarian1Maryam Khodaveisi2 Department of Physical Education & Sport Sciences, Faculty of Humanities, Islamic Azad University, Hamedan Branch, Hamedan, Iran. Department of Sport Biomechanics, Faculty of Physical Education and Sport Sciences, Bu-Ali Sina University, Hamedan, Iran. Department of Physical Education & Sport Sciences, Faculty of Humanities, Islamic Azad University, Hamedan Branch, Hamedan, Iran. Objective: In recent years, it has been focused much attention on gait analysis. Factors such as speed, age and gender affect gait parameters. The purpose of the present study was to compare the electromyographic activity pattern of knee two-joint muscles between younger and older subjects in different gait speeds. Matterials & Methods: The method of current study was analytical cross-sectional method in which 15 healthy young men and 15 old men, were selected conveniently. Electromyographic activity of rectus femoris, biceps femoris, semitendinus and gastrocenemius were recorded during walking with preferred (100%), slow (80%) and fast (120%) speeds in a 10 meter walkway. Normalized RMSs of muscles were compared using RM-ANOVA and Tokey’s tests by SPSS 18 software. Results: According to results, RMSs of rectus femoris in midstance (P<0.01) and gastrocenemius in loading response (P=0.02) phases in all walking speeds were higher in older subjects than in younger ones, and it increased with speed in both age groups (P<0.01). Biceps femoris RMS in terminal stance at 80% speed, was lower in older subjects than in younger ones (P=0.01) and it increased with walking speed (P=0.01). Semitendinus activity in loading and midstance phases at 120% speed was higher in older subjects than in younger ones (P<0.01), and it increased with speed in both age groups in swing phase (P<0.05). Conclusion: According to the results, older subjects have more muscle co-contraction around knee at high speed in midstance phase than younger subjects. These age-related changes in muscle activity, leads to increase in joint stiffness and stability during single support, and probably play a role in reducing push off power at faster speeds.http://rehabilitationj.uswr.ac.ir/browse.php?a_code=A-10-2013-1&slc_lang=en&sid=1Electromyography activity Gait Lower extremity Elderly Young |
| spellingShingle | Hamideh Khodaveisi Mehrdad Anbarian Maryam Khodaveisi Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds Journal of Rehabilitation Electromyography activity Gait Lower extremity Elderly Young |
| title | Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds |
| title_full | Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds |
| title_fullStr | Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds |
| title_full_unstemmed | Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds |
| title_short | Comparison of Electromyographic Activity Pattern of Knee Two-Joint Muscles between Youngs and Olders in Gait Different Speeds |
| title_sort | comparison of electromyographic activity pattern of knee two joint muscles between youngs and olders in gait different speeds |
| topic | Electromyography activity Gait Lower extremity Elderly Young |
| url | http://rehabilitationj.uswr.ac.ir/browse.php?a_code=A-10-2013-1&slc_lang=en&sid=1 |
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