Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus
The aim of this study was to compare the bilateral electric activity of the rectus femoris (RF) and biceps femoris long head (BF) muscles during flexion and extension isotonic movements of the thigh and leg. Six men and six women accomplished all movements in 45° Leg Press apparatus with 30% and 60%...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2007-06-01
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| Series: | Bioscience Journal |
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| Online Access: | https://seer.ufu.br/index.php/biosciencejournal/article/view/6810 |
| _version_ | 1798035649365803008 |
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| author | Fernando Nazario-de-Rezende Eduardo Gaspareto Haddad Gilmar da Cunha Sousa Luiz Fernando Gouvea e Silva Alexandre Goncalves Guilherme Gulart de Agostine Daniela Cristina de Oliveira Silva |
| author_facet | Fernando Nazario-de-Rezende Eduardo Gaspareto Haddad Gilmar da Cunha Sousa Luiz Fernando Gouvea e Silva Alexandre Goncalves Guilherme Gulart de Agostine Daniela Cristina de Oliveira Silva |
| author_sort | Fernando Nazario-de-Rezende |
| collection | DOAJ |
| description | The aim of this study was to compare the bilateral electric activity of the rectus femoris (RF) and biceps femoris long head (BF) muscles during flexion and extension isotonic movements of the thigh and leg. Six men and six women accomplished all movements in 45° Leg Press apparatus with 30% and 60% of the maximum voluntary load (MVL). Electromyographic signs were captured using surface electrodes, recorded in a computerized electromyograph and analyzed in a system of data acquisition (Alc-EMG). The results demonstrated that the RF muscle showed greater electric activity than BF in both loads (30% and 60% MVL) and sides, regardless the sex. It can be concluded that in spite of the RF and BF muscles are in opposite ends of the hip and knee joints and are mentioned traditionally as antagonistic muscles, both muscles seem to act with synergism between themselves with predominance of the activation of the RF muscle on the BF muscle in both genders and studied loads in leg press 45o execution. In addition, the electrical activity of these muscles is directly proportional to the load, ndependently of the sex. |
| first_indexed | 2024-04-11T21:01:10Z |
| format | Article |
| id | doaj.art-85ad4f2a8fcc4c7597e5ddf18f87444e |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-04-11T21:01:10Z |
| publishDate | 2007-06-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-85ad4f2a8fcc4c7597e5ddf18f87444e2022-12-22T04:03:29ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632007-06-01223Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatusFernando Nazario-de-RezendeEduardo Gaspareto HaddadGilmar da Cunha SousaLuiz Fernando Gouvea e SilvaAlexandre GoncalvesGuilherme Gulart de AgostineDaniela Cristina de Oliveira SilvaThe aim of this study was to compare the bilateral electric activity of the rectus femoris (RF) and biceps femoris long head (BF) muscles during flexion and extension isotonic movements of the thigh and leg. Six men and six women accomplished all movements in 45° Leg Press apparatus with 30% and 60% of the maximum voluntary load (MVL). Electromyographic signs were captured using surface electrodes, recorded in a computerized electromyograph and analyzed in a system of data acquisition (Alc-EMG). The results demonstrated that the RF muscle showed greater electric activity than BF in both loads (30% and 60% MVL) and sides, regardless the sex. It can be concluded that in spite of the RF and BF muscles are in opposite ends of the hip and knee joints and are mentioned traditionally as antagonistic muscles, both muscles seem to act with synergism between themselves with predominance of the activation of the RF muscle on the BF muscle in both genders and studied loads in leg press 45o execution. In addition, the electrical activity of these muscles is directly proportional to the load, ndependently of the sex.https://seer.ufu.br/index.php/biosciencejournal/article/view/6810Kinesiologic EMGLeg PressRectus femorisBiceps femoris. |
| spellingShingle | Fernando Nazario-de-Rezende Eduardo Gaspareto Haddad Gilmar da Cunha Sousa Luiz Fernando Gouvea e Silva Alexandre Goncalves Guilherme Gulart de Agostine Daniela Cristina de Oliveira Silva Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus Bioscience Journal Kinesiologic EMG Leg Press Rectus femoris Biceps femoris. |
| title | Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus |
| title_full | Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus |
| title_fullStr | Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus |
| title_full_unstemmed | Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus |
| title_short | Eletromyographic study of the Rectus femoris and Bíceps femoris (long head) muscles during bilateral isotonic contraction in a 450 leg press apparatus |
| title_sort | eletromyographic study of the rectus femoris and biceps femoris long head muscles during bilateral isotonic contraction in a 450 leg press apparatus |
| topic | Kinesiologic EMG Leg Press Rectus femoris Biceps femoris. |
| url | https://seer.ufu.br/index.php/biosciencejournal/article/view/6810 |
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