The effect of different jaw positions on upper extremity performance, core endurance, and postural stability: A cross-sectional study

Year 2023, , 1 - 6, 30.03.2023

Senem Demirdel , Gülşah Gül , Öznur Gümüş , Betül Kuz

https://doi.org/10.31459/turkjkin.1232047

Abstract

The jaw sensorimotor system has functional relationships with other parts of the body through neuroanatomical and biomechanical interactions. The aim of this study was to examine the effects of different jaw positions on upper extremity performance, core endurance, and postural stability. This cross-sectional study included 49 healthy young adults aged 18-28 years. Upper extremity performance was evaluated using the push-up test, core endurance was evaluated using the McGill’s Trunk Flexion and Extension Test and postural stability was evaluated using the Balance Error Scoring System. All assessments were made with resting jaw and clenching jaw positions. There was no significant difference in the Push-up test and Balance Error Scoring System scores in different jaw positions (p>0.05). The Mcgill trunk flexion test and extension test performance were found to be better in the clenched jaw position (p=0.017, p=0.035, respectively). The results of this study showed that jaw clenching increases core endurance time. This result should be taken into account when planning an evaluation and rehabilitation program for the core area.

Keywords

Jaw, physical functional performance, postural balance.

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