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Paper Abstract and Keywords
Presentation 2026-05-30 13:55
Evaluation of the Effects of Exercise at Appropriate Intensity on Autonomic Nervous System Activity and Concentration
Hikaru Murata, Makoto Abe (Shinshu Univ.), Yasunori Suematsu (Fukuoka University Hospital) MBE2026-2
Abstract (in Japanese) (See Japanese page) 
(in English) This study evaluated the effects of exercise at the anaerobic threshold (AT) on autonomic nervous activity and concentration. Autonomic nervous activity was assessed using heart rate variability (HRV) and photoplethysmography (PPG), while concentration was quantified using the Inverse Efficiency Score (IES) calculated from an invoice classification task. The AT was determined using the double product breakpoint (DPBP), and the exercise intervention condition based on this intensity was compared with a non-intervention condition. As a result, lower IES values were observed under the exercise intervention condition, indicating improved concentration performance. In addition, a significant difference in the LF/HF ratio was observed during the first half of the task, whereas no significant difference was found during the latter half. Furthermore, time-series analysis revealed that the IES in the exercise intervention condition showed low values during the early phase of the task, fluctuated during the middle phase, and decreased again during the latter phase. These findings suggest that exercise intervention at AT intensity may induce a high concentration state at the beginning of the task and may also play a regulatory role in fluctuations of concentration over time.
Keyword (in Japanese) (See Japanese page) 
(in English) Anaerobic Threshold / Autonomic Nervous System / Photoplethysmogram / Concentration / Exercise Intensity / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 45, MBE2026-2, pp. 7-12, May 2026.
Paper # MBE2026-2 
Date of Issue 2026-05-23 (MBE) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee MBE  
Conference Date 2026-05-30 - 2026-05-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Shinshu University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ME, etc. 
Paper Information
Registration To MBE 
Conference Code 2026-05-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of the Effects of Exercise at Appropriate Intensity on Autonomic Nervous System Activity and Concentration 
Sub Title (in English)  
Keyword(1) Anaerobic Threshold  
Keyword(2) Autonomic Nervous System  
Keyword(3) Photoplethysmogram  
Keyword(4) Concentration  
Keyword(5) Exercise Intensity  
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Keyword(8)  
1st Author's Name Hikaru Murata  
1st Author's Affiliation Shinshu University (Shinshu Univ.)
2nd Author's Name Makoto Abe  
2nd Author's Affiliation Shinshu University (Shinshu Univ.)
3rd Author's Name Yasunori Suematsu  
3rd Author's Affiliation Fukuoka University Hospital (Fukuoka University Hospital)
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Speaker Author-1 
Date Time 2026-05-30 13:55:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # MBE2026-2 
Volume (vol) vol.126 
Number (no) no.45 
Page pp.7-12 
#Pages 6 
Date of Issue 2026-05-23 (MBE) 

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