Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque
The distal part of the vastus medialis (VM) (VM obliquus: VMO) muscle acts as the medial stabilizer of the patella. However, it has been known to facilitate VMO contraction during training of the quadriceps femoris muscle in knee joint rehabilitation. This study aimed to examine the contribution deg...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Journal of Functional Morphology and Kinesiology |
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| Online Access: | https://www.mdpi.com/2411-5142/5/4/98 |
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| author | Yoshitsugu Tanino Takaki Yoshida Wataru Yamazaki Yuki Fukumoto Tetsuya Nakao Toshiaki Suzuki |
| author_facet | Yoshitsugu Tanino Takaki Yoshida Wataru Yamazaki Yuki Fukumoto Tetsuya Nakao Toshiaki Suzuki |
| author_sort | Yoshitsugu Tanino |
| collection | DOAJ |
| description | The distal part of the vastus medialis (VM) (VM obliquus: VMO) muscle acts as the medial stabilizer of the patella. However, it has been known to facilitate VMO contraction during training of the quadriceps femoris muscle in knee joint rehabilitation. This study aimed to examine the contribution degree of VMO as a knee joint extension torque generator. Sixteen healthy male volunteers participated in this study. Electrical muscle stimulation (EMS) was performed on VMO at 60° knee angle for 20 min to induce muscle fatigue. Knee extension twitch torques (TT) at 90° and 30° knee angle evoked by femoral nerve stimulation were measured before and after EMS. Although each TT at 90° and 30° knee angle significantly decreased after EMS, the decreased TT rate in both joint angles showed no significant difference. Our results show that VMO might contribute to the generation of the knee joint torque at the same level in the range from flexion to extension. Therefore, it was suggested that the facilitating the neural drive for VMO is important during the quadriceps femoris muscle strengthening exercise. |
| first_indexed | 2024-03-10T13:57:52Z |
| format | Article |
| id | doaj.art-23a9cada4be7402098ed09b842e06adb |
| institution | Directory Open Access Journal |
| issn | 2411-5142 |
| language | English |
| last_indexed | 2024-03-10T13:57:52Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Morphology and Kinesiology |
| spelling | doaj.art-23a9cada4be7402098ed09b842e06adb2023-11-21T01:27:22ZengMDPI AGJournal of Functional Morphology and Kinesiology2411-51422020-12-015498010.3390/jfmk5040098Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch TorqueYoshitsugu Tanino0Takaki Yoshida1Wataru Yamazaki2Yuki Fukumoto3Tetsuya Nakao4Toshiaki Suzuki5Clinical Physical Therapy Laboratory, Kansai University of Health Sciences, 2-11-1Wakaba, Kumatori, Sennan, Osaka 590-0482, JapanClinical Physical Therapy Laboratory, Kansai University of Health Sciences, 2-11-1Wakaba, Kumatori, Sennan, Osaka 590-0482, JapanClinical Physical Therapy Laboratory, Kansai University of Health Sciences, 2-11-1Wakaba, Kumatori, Sennan, Osaka 590-0482, JapanClinical Physical Therapy Laboratory, Kansai University of Health Sciences, 2-11-1Wakaba, Kumatori, Sennan, Osaka 590-0482, JapanClinical Physical Therapy Laboratory, Kansai University of Health Sciences, 2-11-1Wakaba, Kumatori, Sennan, Osaka 590-0482, JapanClinical Physical Therapy Laboratory, Kansai University of Health Sciences, 2-11-1Wakaba, Kumatori, Sennan, Osaka 590-0482, JapanThe distal part of the vastus medialis (VM) (VM obliquus: VMO) muscle acts as the medial stabilizer of the patella. However, it has been known to facilitate VMO contraction during training of the quadriceps femoris muscle in knee joint rehabilitation. This study aimed to examine the contribution degree of VMO as a knee joint extension torque generator. Sixteen healthy male volunteers participated in this study. Electrical muscle stimulation (EMS) was performed on VMO at 60° knee angle for 20 min to induce muscle fatigue. Knee extension twitch torques (TT) at 90° and 30° knee angle evoked by femoral nerve stimulation were measured before and after EMS. Although each TT at 90° and 30° knee angle significantly decreased after EMS, the decreased TT rate in both joint angles showed no significant difference. Our results show that VMO might contribute to the generation of the knee joint torque at the same level in the range from flexion to extension. Therefore, it was suggested that the facilitating the neural drive for VMO is important during the quadriceps femoris muscle strengthening exercise.https://www.mdpi.com/2411-5142/5/4/98electrical muscle stimulationknee extensionmuscle fatiguetwitch torquevastus medialis |
| spellingShingle | Yoshitsugu Tanino Takaki Yoshida Wataru Yamazaki Yuki Fukumoto Tetsuya Nakao Toshiaki Suzuki Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque Journal of Functional Morphology and Kinesiology electrical muscle stimulation knee extension muscle fatigue twitch torque vastus medialis |
| title | Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque |
| title_full | Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque |
| title_fullStr | Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque |
| title_full_unstemmed | Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque |
| title_short | Function of the Distal Part of the Vastus Medialis Muscle as a Generator of Knee Extension Twitch Torque |
| title_sort | function of the distal part of the vastus medialis muscle as a generator of knee extension twitch torque |
| topic | electrical muscle stimulation knee extension muscle fatigue twitch torque vastus medialis |
| url | https://www.mdpi.com/2411-5142/5/4/98 |
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