Kang Jeong-Il, Jeong Dae-Keun, Choi Hyun
Department of Physical Therapy, Sehan University: 1113 Noksaek-ro, Samho-eup, Yeongam-gun, Jeollanam-do, Republic of Korea.
Department of Physical Therapy, Mokpo Mirae Hospital, Republic of Korea.
J Phys Ther Sci. 2018 Jan;30(1):132-135. doi: 10.1589/jpts.30.132. Epub 2018 Jan 27.
[Purpose] The purpose of this study is to determine the effect that secondary postural deformities and chronic postural abnormalities have on lung capacity, as well as correlate the activity of the respiratory muscles. The results provide basic objective data about the forward head posture and respiratory muscle activity that can be used in clinical situations. [Subjects and Methods] The subjects used in this study were 24 patients aged 25 to 35 years old who visited a hospital in Jeollanam-do Province, Korea, between September 2015 and January 2016. The patients were diagnosed with forward head posture because the vertical line between the acromion process and the external acoustic meatus was at least 5 cm. We measured the craniovertebral angle, pulmonary functions, and respiratory muscle activity of the subjects for correlation analysis. [Results] A positive correlation was found between the craniovertebral angle and the forced vital capacity (r=0.63), while a negative correlation was found between the craniovertebral angle and the sternocleidomastoid muscle (r=-0.77). The craniovertebral angle and the anterior scalene muscle showed a negative correlation (r=-0.65). There were positive correlations between the forced vital capacity and the sternocleidomastoid muscle (r=0.71), and between the forced vital capacity and the anterior scalene muscle (r=0.59). [Conclusion] Severe forward head posture increased the activities of the sternocleidomastoid muscles and the anterior scalene muscles, and decreased the forced vital capacity. Thus, it is necessary to develop more efficient interventions for managing forward head posture based on pulmonary function and the activity of the respiratory synergist muscles.
[目的] 本研究旨在确定继发性姿势畸形和慢性姿势异常对肺容量的影响，并关联呼吸肌的活动。研究结果提供了有关头部前倾姿势和呼吸肌活动的基础客观数据，可用于临床情况。[对象与方法] 本研究的对象为2015年9月至2016年1月期间就诊于韩国全罗南道某医院的24名年龄在25至35岁之间的患者。这些患者因肩峰与外耳道之间的垂直线至少为5厘米而被诊断为头部前倾姿势。我们测量了受试者的颅椎角、肺功能和呼吸肌活动以进行相关性分析。[结果] 发现颅椎角与用力肺活量之间呈正相关（r = 0.63），而颅椎角与胸锁乳突肌之间呈负相关（r = -0.77）。颅椎角与前斜角肌之间呈负相关（r = -0.65）。用力肺活量与胸锁乳突肌之间呈正相关（r = 0.71），用力肺活量与前斜角肌之间也呈正相关（r = 0.59）。[结论] 严重的头部前倾姿势增加了胸锁乳突肌和前斜角肌的活动，并降低了用力肺活量。因此，有必要基于肺功能和呼吸协同肌的活动开发更有效的干预措施来管理头部前倾姿势。
