Delayed-onset muscle soreness (DOMS) does not influence occlusal sensitivity and position sense of the mandible

Abstract

Background

Masticatory muscle-pain patients often complain about sensorimotor changes, but the effects of pain on the psychophysical properties remain unclear. This study aimed to investigate the effects of Delayed-Onset Muscle Soreness (DOMS) on the jaw's position sense (PS) and occlusal sensitivity (OS).

Methods

Twelve participants underwent intense concentric-eccentric jaw exercises. Self-reported muscle fatigue and pain, pain-free maximum mouth opening (MMO), pain pressure thresholds (PPTs) at right and left masseter and right and left anterior temporalis, maximum voluntary bite force (MVBF), PS, and OS were recorded before, immediately after, 24h, 48h, and one week after the exercises. Data were analysed with repeated measures ANOVA.

Results

Pain and fatigue increased significantly after the exercises, while fatigue also increased 24h afterwards. Time and site had a significant effect for PPTs; not for MVBF. MMO decreased significantly 24 hours after the exercises. OS and PS did not change significantly.

Conclusion

Experimentally induced DOMS does not influence the psychophysical properties of the masticatory system.

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