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| Presentation | 2020-10-29 17:35 Effort-dependent emergence of uniform and diverse muscle activity features in skilled pitching Tsubasa Hashimoto, Ken Takiyama (TUAT), Takeshi Miki, Hirohumi Kobayashi (UTokyo), Daiki Nasu (NTT), Tetsuya Ijiri, Masumi Kuwata (UTokyo), Makio Kashino (NTT), Kimitaka Nakazawa (UTokyo)  NC2020-17 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Skilled pitchers show common and individually different motion features. In contrast, common and individually different motion features unclear how these features depend on motion effort. The current study investigates how motion effort affects common and individually different motion features in skilled motions. We measured electromyographic (EMG) activities in pitching motions at three effort levels (i.e., 50%, 80%, and 100% effort), or three levels of fastball velocity. Besides, by utilizing tensor decomposition and principal component analysis, we found two dimensions regarding the effort-dependence in skilled pitching. One dimension separates 50% from the higher effort, while another dimension separates 80% from 100% effort. In the dimension to separate 50% from the higher effort, there were consistent tendencies across the subjects. On the other hand, in the dimension to separate 80% from 100% effort, there were a few consistent tendencies. In sum, we found that the effort dependence of multiple time-varying EMG activity data can be discussed in two-dimensional space. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Baseball pitching / Individual difference / EMG / Effort / Tensor decomposition / Spatial module / Temporal module / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 216, NC2020-17, pp. 44-49, Oct. 2020. | |
| Paper # | NC2020-17 | |
| Date of Issue | 2020-10-22 (NC) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | NC2020-17 |
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| Conference Information | |
| Committee | MBE NC NLP CAS |
| Conference Date | 2020-10-29 - 2020-10-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME，NC，CAS，NLP |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2020-10-MBE-NC-NLP-CAS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effort-dependent emergence of uniform and diverse muscle activity features in skilled pitching |
| Sub Title (in English) | |
| Keyword(1) | Baseball pitching |
| Keyword(2) | Individual difference |
| Keyword(3) | EMG |
| Keyword(4) | Effort |
| Keyword(5) | Tensor decomposition |
| Keyword(6) | Spatial module |
| Keyword(7) | Temporal module |
| Keyword(8) | |
| 1st Author's Name | Tsubasa Hashimoto |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology (TUAT) |
| 2nd Author's Name | Ken Takiyama |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology (TUAT) |
| 3rd Author's Name | Takeshi Miki |
| 3rd Author's Affiliation | The University of Tokyo (UTokyo) |
| 4th Author's Name | Hirohumi Kobayashi |
| 4th Author's Affiliation | The University of Tokyo (UTokyo) |
| 5th Author's Name | Daiki Nasu |
| 5th Author's Affiliation | NTT Communication Science Laboratories (NTT) |
| 6th Author's Name | Tetsuya Ijiri |
| 6th Author's Affiliation | The University of Tokyo (UTokyo) |
| 7th Author's Name | Masumi Kuwata |
| 7th Author's Affiliation | The University of Tokyo (UTokyo) |
| 8th Author's Name | Makio Kashino |
| 8th Author's Affiliation | NTT Communication Science Laboratories (NTT) |
| 9th Author's Name | Kimitaka Nakazawa |
| 9th Author's Affiliation | The University of Tokyo (UTokyo) |
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| Speaker | Author-1 |
| Date Time | 2020-10-29 17:35:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2020-17 |
| Volume (vol) | vol.120 |
| Number (no) | no.216 |
| Page | pp.44-49 |
| #Pages | 6 |
| Date of Issue | 2020-10-22 (NC) |
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