Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming
This study aimed to estimate the trunk twist angle from the shoulder and hip rotation angles in short-distance crawl swimming and to elucidate the twist motion of the relationship between the trunk and the rotation angular velocity in response to changes in swimming speed. Swimming speed during the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Biomechanics |
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| Online Access: | https://www.mdpi.com/2673-7078/3/2/17 |
| _version_ | 1797596055989125120 |
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| author | Hiroki Hyodo Daiki Koga Yasuo Sengoku Tadashi Wada |
| author_facet | Hiroki Hyodo Daiki Koga Yasuo Sengoku Tadashi Wada |
| author_sort | Hiroki Hyodo |
| collection | DOAJ |
| description | This study aimed to estimate the trunk twist angle from the shoulder and hip rotation angles in short-distance crawl swimming and to elucidate the twist motion of the relationship between the trunk and the rotation angular velocity in response to changes in swimming speed. Swimming speed during the experimental trials was computed from the subject’s best times in the 50 and 100 m crawl swims. Wireless self-luminous LED markers were attached to seven locations on the body. The actual coordinate values of the LED markers were obtained using 18 cameras for underwater movements and 4 on the water for above-water movements. A comparison of the rate of change between trials revealed a high correlation (r = 0.722, <i>p</i> < 0.01) between the twist angle and shoulder rotation angular velocity in the Push phase. In the same phase, a high correlation (r = 0.748, <i>p</i> < 0.01) was also found between the twist angle and the angular velocity of hip rotation. These results suggest that swimmers increase the twist angle of their trunks to obtain a higher swimming speed. |
| first_indexed | 2024-03-11T02:45:08Z |
| format | Article |
| id | doaj.art-d0905ef4a53047cc98f19e1f6d886e1d |
| institution | Directory Open Access Journal |
| issn | 2673-7078 |
| language | English |
| last_indexed | 2024-03-11T02:45:08Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomechanics |
| spelling | doaj.art-d0905ef4a53047cc98f19e1f6d886e1d2023-11-18T09:24:04ZengMDPI AGBiomechanics2673-70782023-04-013219320310.3390/biomechanics3020017Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl SwimmingHiroki Hyodo0Daiki Koga1Yasuo Sengoku2Tadashi Wada3Graduate School of Engineering, Kokushikan University, Tokyo 154-8515, JapanFaculty of Health and Sport Science, University of Tsukuba, Tsukuba 305-8577, JapanFaculty of Health and Sport Science, University of Tsukuba, Tsukuba 305-8577, JapanSchool of Science and Engineering, Kokushikan University, Tokyo 154-8515, JapanThis study aimed to estimate the trunk twist angle from the shoulder and hip rotation angles in short-distance crawl swimming and to elucidate the twist motion of the relationship between the trunk and the rotation angular velocity in response to changes in swimming speed. Swimming speed during the experimental trials was computed from the subject’s best times in the 50 and 100 m crawl swims. Wireless self-luminous LED markers were attached to seven locations on the body. The actual coordinate values of the LED markers were obtained using 18 cameras for underwater movements and 4 on the water for above-water movements. A comparison of the rate of change between trials revealed a high correlation (r = 0.722, <i>p</i> < 0.01) between the twist angle and shoulder rotation angular velocity in the Push phase. In the same phase, a high correlation (r = 0.748, <i>p</i> < 0.01) was also found between the twist angle and the angular velocity of hip rotation. These results suggest that swimmers increase the twist angle of their trunks to obtain a higher swimming speed.https://www.mdpi.com/2673-7078/3/2/17swimmingbiomechanicskinematicsthree-dimensional motion analysistrunk rotation |
| spellingShingle | Hiroki Hyodo Daiki Koga Yasuo Sengoku Tadashi Wada Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming Biomechanics swimming biomechanics kinematics three-dimensional motion analysis trunk rotation |
| title | Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming |
| title_full | Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming |
| title_fullStr | Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming |
| title_full_unstemmed | Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming |
| title_short | Relationship between Swimming Velocity and Trunk Twist Motion in Short-Distance Crawl Swimming |
| title_sort | relationship between swimming velocity and trunk twist motion in short distance crawl swimming |
| topic | swimming biomechanics kinematics three-dimensional motion analysis trunk rotation |
| url | https://www.mdpi.com/2673-7078/3/2/17 |
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