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Lee B, Lee J, Yang J, et al. The effects of stretching exercise for upper trapezius on the asymmetric rate of bite force. J Phys Ther Sci. 2015;27(7):2159-62doi: 10.1589/jpts.27.2159.
Lee, B., Lee, J., Yang, J., Heo, K., Hwang, H., Kim, B., & Han, D. (2015). The effects of stretching exercise for upper trapezius on the asymmetric rate of bite force. Journal of physical therapy science, 27(7), 2159-62. https://doi.org/10.1589/jpts.27.2159
Lee, Bomjin, et al. "The effects of stretching exercise for upper trapezius on the asymmetric rate of bite force." Journal of physical therapy science vol. 27,7 (2015): 2159-62. doi: https://doi.org/10.1589/jpts.27.2159
Lee B, Lee J, Yang J, Heo K, Hwang H, Kim B, Han D. The effects of stretching exercise for upper trapezius on the asymmetric rate of bite force. J Phys Ther Sci. 2015 Jul;27(7):2159-62. doi: 10.1589/jpts.27.2159. Epub 2015 Jul 22. PMID: 26311945; PMCID: PMC4540840.
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J Phys Ther Sci. 2015 Jul;27(7):2159-62. doi: 10.1589/jpts.27.2159. Epub 2015 Jul 22.

The effects of stretching exercise for upper trapezius on the asymmetric rate of bite force.

Journal of physical therapy science

Bomjin Lee, Joongsook Lee, Jeongok Yang, Kwangjin Heo, Hojin Hwang, Boyoung Kim, Dongwook Han

Affiliations

  1. Division of Wellbeing Physical Education, College of Health and Welfare, Silla University, Republic of Korea.
  2. Department of Physical Therapy, Kosin University Gospel Hospital, Republic of Korea.
  3. Department of Physical Therapy, College of Health and Welfare, Silla University, Republic of Korea.

PMID: 26311945 PMCID: PMC4540840 DOI: 10.1589/jpts.27.2159

Abstract

[Purpose] The purpose of this study was to observe the effects of stretching the upper trapezius muscle on the asymmetric rate of bite force. [Subjects] Forty-seven female university students who had all their original teeth, had no disorders in the temporomandibular joints, and had never worn braces; participated in this study. [Methods] An occlusometer was used to measure biting forces. Subsequently, stretching exercises of the upper trapezius were performed. The subjects were divided into 3 groups at the start of the testing: the asymmetric rate of the first group was less than 10%; the asymmetric rate of the second group was between 10% and 20%; and the asymmetric rate of the third group was more than 20%. The stretching exercises were done on the dominant side of the upper trapezius. [Results] After the stretching exercises of the upper trapezius, the results showed that for the first group, whose asymmetric rate of biting force was less than 10%, there was a significant increase in asymmetric rate (from 5.1% to 10.3%). For the second group, whose asymmetric rate of biting force was measured to be between 10% and 20%, the asymmetric rate decreased from 14.7% to 14.3%, but the change was not statistically significant. For the third group, whose asymmetric rate of biting force was more than 20%, there was a significant decrease in asymmetric rate (from 27.8% to 12.6%). [Conclusion] We concluded that stretching exercises of the upper trapezius muscle had a direct effect on the asymmetric rate of biting force.

Keywords: Asymmetric rate of biting force; Stretching exercise; Upper trapezius

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