DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results
Excessive muscle tension is implicitly caused by inactivity or tension in daily activities, and it results in increased joint stiffness and vibration, and thus, poor performance, failure, and injury in sports. Therefore, the routine measurement of muscle tension is important. However, a co-contracti...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/19/6669 |
| _version_ | 1797515750733250560 |
|---|---|
| author | Akihiko Murai Shusuke Kanazawa Ko Ayusawa Sohei Washino Manabu Yoshida Masaaki Mochimaru |
| author_facet | Akihiko Murai Shusuke Kanazawa Ko Ayusawa Sohei Washino Manabu Yoshida Masaaki Mochimaru |
| author_sort | Akihiko Murai |
| collection | DOAJ |
| description | Excessive muscle tension is implicitly caused by inactivity or tension in daily activities, and it results in increased joint stiffness and vibration, and thus, poor performance, failure, and injury in sports. Therefore, the routine measurement of muscle tension is important. However, a co-contraction observed in excessive muscle tension cannot be easily detected because it does not appear in motion owing to the counteracting muscle tension, and it cannot be measured by conventional motion capture systems. Therefore, we focused on the physiological characteristics of muscle, that is, the increase in muscle belly cross-sectional area during activity and softening during relaxation. Furthermore, we measured muscle tension, especially co-contraction and relaxation, using a DATSURYOKU sensor, which measures the circumference of the applied part. The experiments showed high interclass correlation between muscle activities and circumference across maximal voluntary co-contractions of the thigh muscles and squats. Moreover, the circumference sensor can measure passive muscle deformation that does not appear in muscle activities. Therefore, the DATSURYOKU sensor showed the potential to routinely measure muscle tension and relaxation, thus avoiding the risk of failure and injury owing to excessive muscle tension and can contribute to the realization of preemptive medicine by measuring daily changes. |
| first_indexed | 2024-03-10T06:51:41Z |
| format | Article |
| id | doaj.art-fdf95e31bf29446c8c6ec90c36ed18f8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T06:51:41Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-fdf95e31bf29446c8c6ec90c36ed18f82023-11-22T16:49:35ZengMDPI AGSensors1424-82202021-10-012119666910.3390/s21196669DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary ResultsAkihiko Murai0Shusuke Kanazawa1Ko Ayusawa2Sohei Washino3Manabu Yoshida4Masaaki Mochimaru5Human Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba 277-0882, JapanHuman Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba 277-0882, JapanHuman Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba 277-0882, JapanHuman Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba 277-0882, JapanHuman Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba 277-0882, JapanHuman Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Chiba 277-0882, JapanExcessive muscle tension is implicitly caused by inactivity or tension in daily activities, and it results in increased joint stiffness and vibration, and thus, poor performance, failure, and injury in sports. Therefore, the routine measurement of muscle tension is important. However, a co-contraction observed in excessive muscle tension cannot be easily detected because it does not appear in motion owing to the counteracting muscle tension, and it cannot be measured by conventional motion capture systems. Therefore, we focused on the physiological characteristics of muscle, that is, the increase in muscle belly cross-sectional area during activity and softening during relaxation. Furthermore, we measured muscle tension, especially co-contraction and relaxation, using a DATSURYOKU sensor, which measures the circumference of the applied part. The experiments showed high interclass correlation between muscle activities and circumference across maximal voluntary co-contractions of the thigh muscles and squats. Moreover, the circumference sensor can measure passive muscle deformation that does not appear in muscle activities. Therefore, the DATSURYOKU sensor showed the potential to routinely measure muscle tension and relaxation, thus avoiding the risk of failure and injury owing to excessive muscle tension and can contribute to the realization of preemptive medicine by measuring daily changes.https://www.mdpi.com/1424-8220/21/19/6669DATSURYOKU (muscle relaxation)wearable sensingcapacitive sensorpreemptive medicine |
| spellingShingle | Akihiko Murai Shusuke Kanazawa Ko Ayusawa Sohei Washino Manabu Yoshida Masaaki Mochimaru DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results Sensors DATSURYOKU (muscle relaxation) wearable sensing capacitive sensor preemptive medicine |
| title | DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results |
| title_full | DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results |
| title_fullStr | DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results |
| title_full_unstemmed | DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results |
| title_short | DATSURYOKU Sensor—A Capacitive-Sensor-Based Belt for Predicting Muscle Tension: Preliminary Results |
| title_sort | datsuryoku sensor a capacitive sensor based belt for predicting muscle tension preliminary results |
| topic | DATSURYOKU (muscle relaxation) wearable sensing capacitive sensor preemptive medicine |
| url | https://www.mdpi.com/1424-8220/21/19/6669 |
| work_keys_str_mv | AT akihikomurai datsuryokusensoracapacitivesensorbasedbeltforpredictingmuscletensionpreliminaryresults AT shusukekanazawa datsuryokusensoracapacitivesensorbasedbeltforpredictingmuscletensionpreliminaryresults AT koayusawa datsuryokusensoracapacitivesensorbasedbeltforpredictingmuscletensionpreliminaryresults AT soheiwashino datsuryokusensoracapacitivesensorbasedbeltforpredictingmuscletensionpreliminaryresults AT manabuyoshida datsuryokusensoracapacitivesensorbasedbeltforpredictingmuscletensionpreliminaryresults AT masaakimochimaru datsuryokusensoracapacitivesensorbasedbeltforpredictingmuscletensionpreliminaryresults |