Next Article in Journal
Overexpression of p75NTR in Human Seminoma: A New Biomarker?
Next Article in Special Issue
A Systematic Review of Systematic Reviews on the Epidemiology, Evaluation, and Treatment of Plantar Fasciitis
Previous Article in Journal
Idiopathic Infertility as a Feature of Genome Instability
 
 
Article

Effect of Increased Flexor Hallucis Longus Muscle Activity on Ground Reaction Force during Landing

1
Department of Rehabilitation, Kawasaki University of Medical Welfare, Kurashiki, Okayama 701-0193, Japan
2
Faculty of Rehabilitation, Shijonawate Gakuen University, Daitou, Osaka 574-0011, Japan
3
Division of Rehabilitation, Hanna Central Hospital, Ikoma, Nara 630-0243, Japan
4
Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Wen-Dien Chang, Shuya Chen and Chi-Cheng Lu
Life 2021, 11(7), 630; https://doi.org/10.3390/life11070630
Received: 26 May 2021 / Revised: 23 June 2021 / Accepted: 25 June 2021 / Published: 29 June 2021
(This article belongs to the Special Issue Sports Injury Prevention and Rehabilitation)
Repeated high-impact ground forces can lead to injury and decreased performance. While increasing flexor hallucis longus (FHL) muscle activity is known to increase stiffness and elasticity, it is unknown if this also decreases ground reaction forces by shock absorption during landing. This study aimed to determine whether increasing FHL muscle activity affects ground reaction force during landing in healthy subjects. Eight subjects performed single-leg steps onto a force platform for five trials, with and without flexion of the metatarsophalangeal (MTP) joint at the moment of landing. Integrated surface electromyography (sEMG) of the FHL and medial gastrocnemius (MG) and ground reaction forces (GRFs) were measured. sEMG and GRF during the 50 ms before and 100 ms following initial ground contact were analyzed and compared. Flexion of the MTP joint condition significantly decreased the vertical and mediolateral force peaks of GRF, and FHL muscle activity increased. Flexion of the MTP joint at the moment of landing reduces GRF in healthy subjects through force dissipation in the foot, by increased FHL muscle activity. The results suggest that this may contribute to injury prevention by reducing the impact force through flexing the MTP joint at the moment of landing. View Full-Text
Keywords: big toe; muscle contraction; biomechanics; surface electromyography big toe; muscle contraction; biomechanics; surface electromyography
Show Figures

Figure 1

MDPI and ACS Style

Oku, K.; Kimura, D.; Ito, T.; Matsugi, A.; Sugioka, T.; Kobayashi, Y.; Satake, H.; Kumai, T. Effect of Increased Flexor Hallucis Longus Muscle Activity on Ground Reaction Force during Landing. Life 2021, 11, 630. https://doi.org/10.3390/life11070630

AMA Style

Oku K, Kimura D, Ito T, Matsugi A, Sugioka T, Kobayashi Y, Satake H, Kumai T. Effect of Increased Flexor Hallucis Longus Muscle Activity on Ground Reaction Force during Landing. Life. 2021; 11(7):630. https://doi.org/10.3390/life11070630

Chicago/Turabian Style

Oku, Kosuke, Daisuke Kimura, Tomotaka Ito, Akiyoshi Matsugi, Tatsuya Sugioka, Yusuke Kobayashi, Hayato Satake, and Tsukasa Kumai. 2021. "Effect of Increased Flexor Hallucis Longus Muscle Activity on Ground Reaction Force during Landing" Life 11, no. 7: 630. https://doi.org/10.3390/life11070630

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop