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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Purpose : Forward head posture (FHP) is one of the most common postural malalignment of the cranio-cervical region. Previous studies have reported that FHP might affect both cervical and temporomandibular joint (TMJ) muscles, but still remains unclear. Thus, we identified that whether FHP has an influence on muscle properties of sternocleidomastoid (SCM) and TMJ muscles and pressure pain threshold (PPT) of TMJ.
Methods : The craniovertebral angle (CVA) was evaluated using Dartfish motion analysis to assess FHP in fifteen healthy young individuals aged 18 to 22 years. Each subject was divided into FHP and control groups according to their CVA. Then, smartphone task for 15-minutes was given to both groups. CVA, muscle properties and PPT of pre- and post-task measurements were assessed. MyotonPro was used to measure muscle properties of masseter, digastric and SCM. PPT of TMJ was measured with algometer.
Results : CVA significantly changed within- and between-group. Masseter muscle showed between-group significance in muscle tone, stiffness and elasticity, however, a significant within-group difference was only found in muscle stiffness of control group. Digastric muscle showed significant between-group difference in muscle tone, however, significant within-group difference was only found in muscle tone of FHP group. No significances were found in muscle properties of SCM and PPT of TMJ in both groups.
Conclusion : Temporary smartphone usage could worsen FHP regardless of the head posture, but especially influences individuals with FHP more. We also found some between- and within-group differences in TMJ muscle properties, but not in SCM properties and PPT of TMJ. These results indicate that FHP could also induce the changes in muscle properties of TMJ. Therefore, further studies with various experimental designs investigating the relationship among FHP, SCM, and TMJ are needed to prevent the secondary musculoskeletal problems due to FHP.
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참고문헌 (31)
참고문헌 신청
Agyapong-Badu S / 2013 / Interrater reliability of muscle tone, stiffness and elasticity measurements of rectus femoris and biceps brachii in healthy young and older males / Work Papers Health Sci 4:1~11
Ahmadi A / 2016 / Evaluation of forward head posture in sitting and standing positions / Eur Spine J 25(11):3577~3582
Alshahrani A / 2018 / Impact of smartphone usage on cervical proprioception and balance in healthy adults / Biomed Res 29(12):2547~2552
Armijo-Olivo S / 2011 / Head and cervical posture in patients with temporomandibular disorders / J Orofac Pain 25(3):199~209
Berolo S / 2011 / Musculoskeletal symptoms among mobile hand-held device users and their relationship to device use : a preliminary study in a Canadian university population / Appl Ergon 42(2):371~378
Ahmadi A / 2016 / Evaluation of forward head posture in sitting and standing positions / Eur Spine J 25(11):3577~3582
Alshahrani A / 2018 / Impact of smartphone usage on cervical proprioception and balance in healthy adults / Biomed Res 29(12):2547~2552
Armijo-Olivo S / 2011 / Head and cervical posture in patients with temporomandibular disorders / J Orofac Pain 25(3):199~209
Berolo S / 2011 / Musculoskeletal symptoms among mobile hand-held device users and their relationship to device use : a preliminary study in a Canadian university population / Appl Ergon 42(2):371~378
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