Motor control with assistive force during isometric elbow flexion

Satoshi Muraki, Keisuke Hayashi, Nursalbiah Nasir, Ping Yeap Loh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the modern society, an assistive/powered suit has been developed to enhance the limb and trunk movements by mechanical force. The effective output of assistive products needs cooperation between the users, that is, human beings and the machine. The present study investigated the motor control of external forces that assist with physical exertion. Sixteen adult male participants performed isometric elbow flexion under two conditions of submaximal workload (20% and 40% of the maximal voluntary contraction) and four levels (0%, 33%, 67%, and 100%) of assistive force. The electromyographic (EMG) activity of the agonist and antagonist muscles (biceps and triceps, respectively) and rating of perceived exertion decreased with increased levels of assistive force under both workload conditions. At the lower level of assistance (33%), the EMG amplitude of the biceps was near the expected amplitude, which denotes that the participants made good use of the assistive force. However, at the higher level of assistance (100%), it was far from the expected values at both workload levels. These results suggest that the effectiveness of assistive force changes according to the level of workload and assistive force, and that various human physiological regulations and motor control would be required during cooperative work with assistive force.

LanguageEnglish
Title of host publicationProceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III
Subtitle of host publicationMusculoskeletal Disorders
EditorsRiccardo Tartaglia, Sara Albolino, Thomas Alexander, Sebastiano Bagnara, Yushi Fujita
PublisherSpringer Verlag
Pages191-194
Number of pages4
ISBN (Print)9783319960821
DOIs
Publication statusPublished - Jan 1 2019
Event20th Congress of the International Ergonomics Association, IEA 2018 - Florence, Italy
Duration: Aug 26 2018Aug 30 2018

Publication series

NameAdvances in Intelligent Systems and Computing
Volume820
ISSN (Print)2194-5357

Other

Other20th Congress of the International Ergonomics Association, IEA 2018
CountryItaly
CityFlorence
Period8/26/188/30/18

Fingerprint

Muscle

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Computer Science(all)

Cite this

Muraki, S., Hayashi, K., Nasir, N., & Loh, P. Y. (2019). Motor control with assistive force during isometric elbow flexion. In R. Tartaglia, S. Albolino, T. Alexander, S. Bagnara, & Y. Fujita (Eds.), Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III: Musculoskeletal Disorders (pp. 191-194). (Advances in Intelligent Systems and Computing; Vol. 820). Springer Verlag. https://doi.org/10.1007/978-3-319-96083-8_24

Motor control with assistive force during isometric elbow flexion. / Muraki, Satoshi; Hayashi, Keisuke; Nasir, Nursalbiah; Loh, Ping Yeap.

Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III: Musculoskeletal Disorders. ed. / Riccardo Tartaglia; Sara Albolino; Thomas Alexander; Sebastiano Bagnara; Yushi Fujita. Springer Verlag, 2019. p. 191-194 (Advances in Intelligent Systems and Computing; Vol. 820).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Muraki, S, Hayashi, K, Nasir, N & Loh, PY 2019, Motor control with assistive force during isometric elbow flexion. in R Tartaglia, S Albolino, T Alexander, S Bagnara & Y Fujita (eds), Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III: Musculoskeletal Disorders. Advances in Intelligent Systems and Computing, vol. 820, Springer Verlag, pp. 191-194, 20th Congress of the International Ergonomics Association, IEA 2018, Florence, Italy, 8/26/18. https://doi.org/10.1007/978-3-319-96083-8_24
Muraki S, Hayashi K, Nasir N, Loh PY. Motor control with assistive force during isometric elbow flexion. In Tartaglia R, Albolino S, Alexander T, Bagnara S, Fujita Y, editors, Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III: Musculoskeletal Disorders. Springer Verlag. 2019. p. 191-194. (Advances in Intelligent Systems and Computing). https://doi.org/10.1007/978-3-319-96083-8_24
Muraki, Satoshi ; Hayashi, Keisuke ; Nasir, Nursalbiah ; Loh, Ping Yeap. / Motor control with assistive force during isometric elbow flexion. Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III: Musculoskeletal Disorders. editor / Riccardo Tartaglia ; Sara Albolino ; Thomas Alexander ; Sebastiano Bagnara ; Yushi Fujita. Springer Verlag, 2019. pp. 191-194 (Advances in Intelligent Systems and Computing).
@inproceedings{479dda5720544fe5b30a6de267a45a92,
title = "Motor control with assistive force during isometric elbow flexion",
abstract = "In the modern society, an assistive/powered suit has been developed to enhance the limb and trunk movements by mechanical force. The effective output of assistive products needs cooperation between the users, that is, human beings and the machine. The present study investigated the motor control of external forces that assist with physical exertion. Sixteen adult male participants performed isometric elbow flexion under two conditions of submaximal workload (20{\%} and 40{\%} of the maximal voluntary contraction) and four levels (0{\%}, 33{\%}, 67{\%}, and 100{\%}) of assistive force. The electromyographic (EMG) activity of the agonist and antagonist muscles (biceps and triceps, respectively) and rating of perceived exertion decreased with increased levels of assistive force under both workload conditions. At the lower level of assistance (33{\%}), the EMG amplitude of the biceps was near the expected amplitude, which denotes that the participants made good use of the assistive force. However, at the higher level of assistance (100{\%}), it was far from the expected values at both workload levels. These results suggest that the effectiveness of assistive force changes according to the level of workload and assistive force, and that various human physiological regulations and motor control would be required during cooperative work with assistive force.",
author = "Satoshi Muraki and Keisuke Hayashi and Nursalbiah Nasir and Loh, {Ping Yeap}",
year = "2019",
month = "1",
day = "1",
doi = "10.1007/978-3-319-96083-8_24",
language = "English",
isbn = "9783319960821",
series = "Advances in Intelligent Systems and Computing",
publisher = "Springer Verlag",
pages = "191--194",
editor = "Riccardo Tartaglia and Sara Albolino and Thomas Alexander and Sebastiano Bagnara and Yushi Fujita",
booktitle = "Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III",
address = "Germany",

}

TY - GEN

T1 - Motor control with assistive force during isometric elbow flexion

AU - Muraki, Satoshi

AU - Hayashi, Keisuke

AU - Nasir, Nursalbiah

AU - Loh, Ping Yeap

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In the modern society, an assistive/powered suit has been developed to enhance the limb and trunk movements by mechanical force. The effective output of assistive products needs cooperation between the users, that is, human beings and the machine. The present study investigated the motor control of external forces that assist with physical exertion. Sixteen adult male participants performed isometric elbow flexion under two conditions of submaximal workload (20% and 40% of the maximal voluntary contraction) and four levels (0%, 33%, 67%, and 100%) of assistive force. The electromyographic (EMG) activity of the agonist and antagonist muscles (biceps and triceps, respectively) and rating of perceived exertion decreased with increased levels of assistive force under both workload conditions. At the lower level of assistance (33%), the EMG amplitude of the biceps was near the expected amplitude, which denotes that the participants made good use of the assistive force. However, at the higher level of assistance (100%), it was far from the expected values at both workload levels. These results suggest that the effectiveness of assistive force changes according to the level of workload and assistive force, and that various human physiological regulations and motor control would be required during cooperative work with assistive force.

AB - In the modern society, an assistive/powered suit has been developed to enhance the limb and trunk movements by mechanical force. The effective output of assistive products needs cooperation between the users, that is, human beings and the machine. The present study investigated the motor control of external forces that assist with physical exertion. Sixteen adult male participants performed isometric elbow flexion under two conditions of submaximal workload (20% and 40% of the maximal voluntary contraction) and four levels (0%, 33%, 67%, and 100%) of assistive force. The electromyographic (EMG) activity of the agonist and antagonist muscles (biceps and triceps, respectively) and rating of perceived exertion decreased with increased levels of assistive force under both workload conditions. At the lower level of assistance (33%), the EMG amplitude of the biceps was near the expected amplitude, which denotes that the participants made good use of the assistive force. However, at the higher level of assistance (100%), it was far from the expected values at both workload levels. These results suggest that the effectiveness of assistive force changes according to the level of workload and assistive force, and that various human physiological regulations and motor control would be required during cooperative work with assistive force.

UR - http://www.scopus.com/inward/record.url?scp=85051825370&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85051825370&partnerID=8YFLogxK

U2 - 10.1007/978-3-319-96083-8_24

DO - 10.1007/978-3-319-96083-8_24

M3 - Conference contribution

SN - 9783319960821

T3 - Advances in Intelligent Systems and Computing

SP - 191

EP - 194

BT - Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) - Volume III

A2 - Tartaglia, Riccardo

A2 - Albolino, Sara

A2 - Alexander, Thomas

A2 - Bagnara, Sebastiano

A2 - Fujita, Yushi

PB - Springer Verlag

ER -