Effects of teeth clenching on the soleus H reflex during lower limb muscle fatigue
Open accessAbstract
PURPOSE: We assessed whether the soleus H reflex was depressed or facilitated in association with voluntary teeth clenching during muscle fatigue. METHODS: A total of 13 and 9 healthy adult subjects were instructed to perform right-side tiptoe standing for 5 (TS1) and 10min (TS2) to induce the soleus muscle fatigue. Electromyograms (EMGs) were recorded from the bilateral masseter as well as the right-side soleus muscles. H reflex was evoked using a surface electrode. The isometric muscle strength during plantar flexion was measured. We tested two dental occlusal conditions (1) with maximal voluntary teeth clenching (MVTC) and (2) at mandibular rest position (RP). H reflex was evoked before and after TS1 and TS2. The isometric muscle strength during plantar flexion was measured before and after TS1 and TS2. RESULTS: Mean amplitudes of H reflex with MVTC before and after TS1 were significantly larger than that with RP before and after TS1. The mean peak torque (PT) during isometric plantar flexion was observed significant differences in all subjects. The mean amplitude of H reflex with MVTC before TS2 was significantly larger than that with RP before TS2. No significant difference between RP after TS2 and MVTC after TS2. The mean PT with MVTC before TS2 was significantly larger than that with RP before TS2. There was no significant difference between RP and MVTC after TS2. CONCLUSION: The present study demonstrated that teeth clenching could facilitate H reflex regardless of the degree of muscle fatigue.
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The effects of pulling clenched hands and teeth clenching on both stretch and H-reflex have been examined in separate studies.
“Although the effects of pulling clenched hands and teeth clenching on both stretch and H-reflex have been examined in separate studies (Boroojerdi et al., 2000, Gregory et al., 2001, Mitsuyama et al., 2017, Sato et al., 2014, Sugawara and Kasai, 2002, Hagbarth et al., 1975, Tuncer et al., 2007)”
From Standardization of the Jendrassik maneuver in Achilles tendon tap reflex (2018) · cites this paper as Mitsuyama et al., 2017
The effect of TC on the stretch reflex response of the soleus was previously not known, although an excitatory effect was reported for H-reflex.
“The effect of TC on the stretch reflex response of the soleus was previously not known, although an excitatory effect was reported for H-reflex (Mitsuyama et al., 2017, Tuncer et al., 2007).”
From Standardization of the Jendrassik maneuver in Achilles tendon tap reflex (2018) · cites this paper as Mitsuyama et al., 2017
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References 33 · Cited by 14
- Authors
- Mitsuyama, A., Takahashi, T., & Ueno, T.
- Affiliations
- Tokyo Medical and Dental University (JP)
- Corresponding author
- Ueno, Toshiaki
- Venue
- Journal of Prosthodontic Research
- Publisher
- Japan Prosthodontic Society
- Published
- 2017-04
- Volume
- 61
- Issue
- 2
- Pages
- 202-209
- ISSN
- 1883-1958 (ISSN-L)
- OpenAlex
- W2464417305
- Cited by
- 14
- References
- 33
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 5 · 2019: 1 · 2018: 1 · 2017: 1
- FWCI
- 0.48
- Type
- journal article
- Language
- en
- Open access
- Locations
- Journal of Prosthodontic Research (publishedVersion)
- PubMed (publishedVersion)
- The Journal of Physiological Sciences
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
- Health Sciences › Health Professions › Complementary and Manual Therapy › Temporomandibular Joint Disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
- Keywords
- teeth clenching, H-reflex, soleus muscle, muscle fatigue, lower limb fatigue, plantar flexion strength, masseter muscle, mandibular rest position, dental occlusion, reflex facilitation
- MeSH terms
- Adult, Bite Force, Dental Occlusion, Electromyography, Female, H-Reflex, Humans, Isometric Contraction, Male, Tooth, Muscle, Skeletal, Muscle Fatigue, Muscle Strength
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