Lyons, M.F. and Aggarwal, A. (2001) Relaxation rate in the assessment of masseter muscle fatigue. Journal of Oral Rehabilitation, 28, pp. 174-179. (doi: 10.1046/j.1365-2842.2001.00651.x)
Full text not currently available from Enlighten.
Abstract
The aim of this study was to assess a simple method of measuring relaxation rate in the jaw-closing system for the purpose of quantifying jaw muscle fatigue. A summary of the various different methods of measuring relaxation rate is also provided. The rates of twitch contraction and relaxation were measured in 30 symptom-free subjects following bilateral direct electrical stimulation of the masseter muscles. The resulting twitch force was recorded via a force transducer placed between the anterior teeth. The transducer was held between the teeth with as little force as possible while four single stimuli were delivered at 5-s intervals. The stimulating electrodes were then removed and replaced and the experiment was repeated. The force records of the resulting twitches were averaged and the half-contraction time, twitch amplitude and half-relaxation time were measured. There was a significant difference in half-relaxation time between males and females, being faster in females (P=0·0045, independent t-test). No significant difference was found in twitch amplitude and half-contraction time between males and females. Half-relaxation time and half-contraction time were independent of twitch amplitude. This method of measuring the relaxation rate of the masseter muscles was found to be practical and the results were reproducible between sessions.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | UNSPECIFIED |
| Authors: | Lyons, M.F., and Aggarwal, A. |
| College/School: | College of Medical Veterinary and Life Sciences |
| Journal Name: | Journal of Oral Rehabilitation |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric