A single session of transcranial static magnetic stimulation placed over the visual cortex was not associated with measurable changes in dynamic stability or static postural control in individuals with recurrent lateral ankle sprains: a randomized double-blind placebo-controlled trial.
4 affiliations
- 1Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan.
- 2Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga, Japan.
- 3Institute of Advanced Research for Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan.
- 4The Graduate School of Core Ethics and Frontier Sciences, Ritsumeikan University, Kyoto, Kyoto, Japan.
Abstract
Diminished postural control is a motor-behavioral impairment associated with recurrent lateral ankle sprains. Individuals with recurrent lateral ankle sprains rely on visual cues and exhibit cortical overactivation in the visual cortex, which may be linked to poor postural control. Transcranial static magnetic stimulation (tSMS), which reduces visual cortical activity, may alter sensorimotor control by modulating visual information processing. However, it is unclear whether tSMS over the visual cortex alters dynamic stability and static postural control in individuals with recurrent lateral ankle sprains. Herein, we aimed to investigate the effects of a single dose of tSMS placed over the visual cortex on dynamic stability and static postural control in individuals with recurrent lateral ankle sprains. In a randomized, double-blind placebo-controlled trial, 40 participants with recurrent lateral ankle sprains were randomly allocated to a tSMS or Sham group. During intervention, tSMS or sham stimulation was applied to the visual cortex for 30 min. The outcome measures included time to stabilization in the anteroposterior and mediolateral directions after a unilateral drop landing task and static postural control measured by the clinical test of sensory interaction and balance before and after the intervention. No significant group-by-time interactions were found in time to stabilization in the anteroposterior and mediolateral directions as well as scores of the clinical test of sensory interaction and balance (P > 0.05). A single session of tSMS applied over the visual cortex did not induce measurable changes in dynamic stability or static postural control in individuals with recurrent lateral ankle sprains. However, because visual processing was not directly assessed following tSMS, it remains unclear whether the tSMS protocol used in this study effectively modulated visual cortical activity. https://www.umin.ac.jp/ctr/, identifier UMIN000052760.
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BibTeX
@article{nonoyama2026single,
title = {{A single session of transcranial static magnetic stimulation placed over the visual cortex was not associated with measurable changes in dynamic stability or static postural control in individuals with recurrent lateral ankle sprains: a randomized double-blind placebo-controlled trial.}},
author = {Shunya Nonoyama and Yuka Shimozawa and Tatsuya Mima and Tadao Isaka and Masafumi Terada},
journal = {Frontiers in sports and active living},
year = {2026},
month = oct,
doi = {10.3389/fspor.2026.1918375},
url = {https://europepmc.org/article/MED/42996720},
note = {CC BY},
}
RIS
TY - JOUR
TI - A single session of transcranial static magnetic stimulation placed over the visual cortex was not associated with measurable changes in dynamic stability or static postural control in individuals with recurrent lateral ankle sprains: a randomized double-blind placebo-controlled trial.
AU - Shunya Nonoyama
AU - Yuka Shimozawa
AU - Tatsuya Mima
AU - Tadao Isaka
AU - Masafumi Terada
PY - 2026
DA - 2026/10/23
JO - Frontiers in sports and active living
DO - 10.3389/fspor.2026.1918375
UR - https://europepmc.org/article/MED/42996720
AB - Diminished postural control is a motor-behavioral impairment associated with recurrent lateral ankle sprains. Individuals with recurrent lateral ankle sprains rely on visual cues and exhibit cortical overactivation in the visual cortex, which may be linked to poor postural control. Transcranial static magnetic stimulation (tSMS), which reduces visual cortical activity, may alter sensorimotor control by modulating visual information processing. However, it is unclear whether tSMS over the visual cortex alters dynamic stability and static postural control in individuals with recurrent lateral ankle sprains. Herein, we aimed to investigate the effects of a single dose of tSMS placed over the visual cortex on dynamic stability and static postural control in individuals with recurrent lateral ankle sprains. In a randomized, double-blind placebo-controlled trial, 40 participants with recurrent lateral ankle sprains were randomly allocated to a tSMS or Sham group. During intervention, tSMS or sham stimulation was applied to the visual cortex for 30 min. The outcome measures included time to stabilization in the anteroposterior and mediolateral directions after a unilateral drop landing task and static postural control measured by the clinical test of sensory interaction and balance before and after the intervention. No significant group-by-time interactions were found in time to stabilization in the anteroposterior and mediolateral directions as well as scores of the clinical test of sensory interaction and balance (P > 0.05). A single session of tSMS applied over the visual cortex did not induce measurable changes in dynamic stability or static postural control in individuals with recurrent lateral ankle sprains. However, because visual processing was not directly assessed following tSMS, it remains unclear whether the tSMS protocol used in this study effectively modulated visual cortical activity. https://www.umin.ac.jp/ctr/, identifier UMIN000052760.
SN - 2624-9367
ER -