Trial reportSports health
Effects of Clenching Strength on Exercise Performance: Verification Using Spinal Function Assessments.
Trial report in Sports health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed.
- Neuromuscular Responses of the Cranio-Cervico-Mandibular System During Professional "110th Targa Florio" Rally Competitions: An Electromyographic Study in Real-World Racing Conditions.Dentistry journal · 2026Article
- Correlation between concurrent activation potentiation of hand grip strength and core stability endurance in medical university students.Pakistan journal of medical sciences · 2026Article
- Effects of Clenching Strength on Step Reaction Time.Journal of functional morphology and kinesiology · 2025Article
- The effects of lumbar stabilization exercises with and without jaw movements in non-specific low back pain (A randomized controlled trial).Pakistan journal of medical sciences · 2024Article
- Relationship between a gum-chewing routine and oral, physical, and cognitive functions of community-dwelling older adults: A Kashiwa cohort study.Geriatrics & gerontology international · 2024Article
- Relationship between oral frailty and locomotive syndrome in working-age individuals: a cross-sectional survey of workers in Japan.BMC oral health · 2023Article
- Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance.Health science reports · 2023Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThis study aimed to determine the relationship between exercise performance and spinal function based on clenching strength. HYPOTHESIS: Low-intensity clenching contributes to joint movement, whereas high-intensity clenching contributes to joint fixation. STUDY
designRandomized crossover trial. LEVEL OF EVIDENCE: Level 3.
methodsTwo experiments were conducted using 2 groups of 20 healthy adults. The 4 clenching conditions in experiment 1 were 0%, 12.5%, 25%, and 50% of the maximum voluntary contraction (MVC) of the masseter muscle. Experiment 2 consisted of 3 conditions: no-bite condition, moderate effort, and maximum effort (max condition). In experiment 1, spinal function and ankle dorsiflexion tasks were measured for each clenching condition, and the ankle dorsiflexion task was measured in experiment 2. Regarding spinal function, we measured spinal reciprocal inhibition (RI) and excitability of spinal anterior horn cells. For the ankle dorsiflexion task, ankle dorsiflexion MVC was performed for 3 seconds under each clenching condition. The items analyzed were reaction time, peak ankle dorsiflexion torque, and soleus (Sol)/tibialis anterior (TA) electromyography (EMG) ratio.
resultsThe results of experiment 1 illustrated that RI was significantly attenuated or eliminated with increasing clenching strength (>25% MVC). Spinal anterior horn cell excitability increased significantly with increasing clenching strength. The peak torque was significantly higher at 50% MVC than that at 0% MVC. In experiment 2, the peak torque was significantly higher under moderate and max conditions than no-bite condition, and the Sol/TA EMG ratio was significantly higher under max condition than that under moderate condition. CONCLUSION/CLINICAL RELEVANCE: The results illustrated that during high-strength clenching (≥50% MVC), antagonist muscles are activated simultaneously to increase muscle strength. High-strength clenching improved kinetic performance (joint fixation), whereas low-strength clenching (<50% MVC) enhanced exercise performance (joint movement).
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