Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing
Objectives: The results of a few studies about the effects of ankle brace on muscles function during the performance of different tasks are contradictory. Moreover, the effect of brace on the co-contraction of ankle muscles is undiscovered. Therefore, the present study investigated the effect of bra...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Negah Institute for Scientific Communication
2019-03-01
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| Series: | Iranian Rehabilitation Journal |
| Subjects: | |
| Online Access: | http://irj.uswr.ac.ir/article-1-893-en.html |
| _version_ | 1811266445165723648 |
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| author | Farnaz Mobini Mehrdad Anbarian Leila Ghazaleh |
| author_facet | Farnaz Mobini Mehrdad Anbarian Leila Ghazaleh |
| author_sort | Farnaz Mobini |
| collection | DOAJ |
| description | Objectives: The results of a few studies about the effects of ankle brace on muscles function during the performance of different tasks are contradictory. Moreover, the effect of brace on the co-contraction of ankle muscles is undiscovered. Therefore, the present study investigated the effect of brace usage on the ankle muscles activity and co-contraction during single-leg landing.
Methods: Fifteen non-athletic males aged 22.3±1.09 years without any traumatic injury and abnormality of the lower limb participated in this study. Electromyography activity of the ankle muscles (tibialis anterior, lateral gastrocnemius, medial gastrocnemius, peroneus longus and soleus) and muscle co-contraction in the anteroposterior and mediolateral directions were compared between two single-leg landing conditions, in respect of braced and unbraced ankle. The subjects landed from a 60-cm height bench. For the normalization of electromyography amplitudes, maximal voluntary isometric contractions were recorded for each muscle. Paired Samples t-test was used to compare muscle activities and co-contractions between the two conditions of landing.
Results: In general, the activity of selected ankle muscles was reduced in braced condition, compared to the unbraced condition (P<0.001). This reduction was not significant in the gastrocnemius lateralis muscle. In addition, the muscles co-contraction decreased in both directions during landing in braced condition (P<0.05).
Discussion: According to the obtained results, ankle brace reduces the activity and co-contraction of ankle joint muscles during landing. These findings can be considered as advantages of using brace, because it could reduce the load imposed on joint and muscles. |
| first_indexed | 2024-04-12T20:43:23Z |
| format | Article |
| id | doaj.art-145ab5ca698a4ed7af72ba73c03d6da4 |
| institution | Directory Open Access Journal |
| issn | 1735-3602 1735-3610 |
| language | English |
| last_indexed | 2024-04-12T20:43:23Z |
| publishDate | 2019-03-01 |
| publisher | Negah Institute for Scientific Communication |
| record_format | Article |
| series | Iranian Rehabilitation Journal |
| spelling | doaj.art-145ab5ca698a4ed7af72ba73c03d6da42022-12-22T03:17:21ZengNegah Institute for Scientific CommunicationIranian Rehabilitation Journal1735-36021735-36102019-03-011711722Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg LandingFarnaz Mobini0Mehrdad Anbarian1Leila Ghazaleh2 Department of Physical Education and Sport Sciences, Borujerd Branch, Islamic Azad University, Borujerd, Iran. Department of Sports Biomechanics, Faculty of Sports Sciences, Bu-Ali Sina University, Hamadan, Iran. Department of Sport Physiology, Faculty of Physical Education, Alzahra University, Tehran, Iran. Objectives: The results of a few studies about the effects of ankle brace on muscles function during the performance of different tasks are contradictory. Moreover, the effect of brace on the co-contraction of ankle muscles is undiscovered. Therefore, the present study investigated the effect of brace usage on the ankle muscles activity and co-contraction during single-leg landing. Methods: Fifteen non-athletic males aged 22.3±1.09 years without any traumatic injury and abnormality of the lower limb participated in this study. Electromyography activity of the ankle muscles (tibialis anterior, lateral gastrocnemius, medial gastrocnemius, peroneus longus and soleus) and muscle co-contraction in the anteroposterior and mediolateral directions were compared between two single-leg landing conditions, in respect of braced and unbraced ankle. The subjects landed from a 60-cm height bench. For the normalization of electromyography amplitudes, maximal voluntary isometric contractions were recorded for each muscle. Paired Samples t-test was used to compare muscle activities and co-contractions between the two conditions of landing. Results: In general, the activity of selected ankle muscles was reduced in braced condition, compared to the unbraced condition (P<0.001). This reduction was not significant in the gastrocnemius lateralis muscle. In addition, the muscles co-contraction decreased in both directions during landing in braced condition (P<0.05). Discussion: According to the obtained results, ankle brace reduces the activity and co-contraction of ankle joint muscles during landing. These findings can be considered as advantages of using brace, because it could reduce the load imposed on joint and muscles.http://irj.uswr.ac.ir/article-1-893-en.htmlBraceElectromyographyMuscle activityCo-contraction |
| spellingShingle | Farnaz Mobini Mehrdad Anbarian Leila Ghazaleh Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing Iranian Rehabilitation Journal Brace Electromyography Muscle activity Co-contraction |
| title | Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing |
| title_full | Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing |
| title_fullStr | Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing |
| title_full_unstemmed | Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing |
| title_short | Effect of Ankle Brace on the Activity and Co-Contraction of Ankle Muscles During Single-Leg Landing |
| title_sort | effect of ankle brace on the activity and co contraction of ankle muscles during single leg landing |
| topic | Brace Electromyography Muscle activity Co-contraction |
| url | http://irj.uswr.ac.ir/article-1-893-en.html |
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