Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands
Abstract Previous research indicates that shouting during momentary maximal exertion effort potentiates the maximal voluntary force through the potentiation of motor cortical excitability. However, the muscular force-enhancing effects of shouting on sustained maximal force production remain unclear....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-20643-4 |
| _version_ | 1811200644030136320 |
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| author | Yudai Takarada Daichi Nozaki |
| author_facet | Yudai Takarada Daichi Nozaki |
| author_sort | Yudai Takarada |
| collection | DOAJ |
| description | Abstract Previous research indicates that shouting during momentary maximal exertion effort potentiates the maximal voluntary force through the potentiation of motor cortical excitability. However, the muscular force-enhancing effects of shouting on sustained maximal force production remain unclear. We investigated the effect of shouting on the motor system state by examining motor evoked potentials in response to transcranial magnetic stimulation applied over the hand area of the contralateral primary motor cortex (M1) during sustained maximal voluntary contraction, and by assessing handgrip maximal voluntary force. We observed that shouting significantly increased handgrip maximal voluntary force and reduced the silent period. Our results indicate that shouting increased handgrip voluntary force during sustained maximal exertion effort through the reduced silent period. This is the first objective evidence that the muscular force of shouting during maximal force exertion is associated with the potentiation of motor system activity produced by the additional drive of shouting operating on the motor system (i.e., shouting-induced excitatory input to M1). |
| first_indexed | 2024-04-12T02:07:05Z |
| format | Article |
| id | doaj.art-85e5beb39636492bac939dab370373ae |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T02:07:05Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-85e5beb39636492bac939dab370373ae2022-12-22T03:52:30ZengNature PortfolioScientific Reports2045-23222022-09-0112111310.1038/s41598-022-20643-4Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commandsYudai Takarada0Daichi Nozaki1Faculty of Sports Sciences, Waseda UniversityGraduate School of Education, The University of TokyoAbstract Previous research indicates that shouting during momentary maximal exertion effort potentiates the maximal voluntary force through the potentiation of motor cortical excitability. However, the muscular force-enhancing effects of shouting on sustained maximal force production remain unclear. We investigated the effect of shouting on the motor system state by examining motor evoked potentials in response to transcranial magnetic stimulation applied over the hand area of the contralateral primary motor cortex (M1) during sustained maximal voluntary contraction, and by assessing handgrip maximal voluntary force. We observed that shouting significantly increased handgrip maximal voluntary force and reduced the silent period. Our results indicate that shouting increased handgrip voluntary force during sustained maximal exertion effort through the reduced silent period. This is the first objective evidence that the muscular force of shouting during maximal force exertion is associated with the potentiation of motor system activity produced by the additional drive of shouting operating on the motor system (i.e., shouting-induced excitatory input to M1).https://doi.org/10.1038/s41598-022-20643-4 |
| spellingShingle | Yudai Takarada Daichi Nozaki Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands Scientific Reports |
| title | Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands |
| title_full | Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands |
| title_fullStr | Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands |
| title_full_unstemmed | Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands |
| title_short | Shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands |
| title_sort | shouting strengthens voluntary force during sustained maximal effort through enhancement of motor system state via motor commands |
| url | https://doi.org/10.1038/s41598-022-20643-4 |
| work_keys_str_mv | AT yudaitakarada shoutingstrengthensvoluntaryforceduringsustainedmaximaleffortthroughenhancementofmotorsystemstateviamotorcommands AT daichinozaki shoutingstrengthensvoluntaryforceduringsustainedmaximaleffortthroughenhancementofmotorsystemstateviamotorcommands |