한국전문물리치료학회지 (Physical Therapy Korea)

  • 제24권2호
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  • Pages.48-57
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  • 2017
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  • 1225-8962(pISSN)
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  • 2287-982X(eISSN)
한국전문물리치료학회 (Korean Research Society of Physical Therapy)
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Relationships Between Rounded Shoulder Posture and Biceps Brachii Muscle Length, Elbow Joint Angle, Pectoralis Muscle Length, Humeral Head Anterior Translation, and Glenohumeral Range of Motion

  • Choi, Sil-ah (Applied Kinesiology and Ergonomic Technology Laboratory, Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Cynn, Heon-seock (Applied Kinesiology and Ergonomic Technology Laboratory, Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Lee, Ji-hyun (Applied Kinesiology and Ergonomic Technology Laboratory, Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Kim, Da-eun (Applied Kinesiology and Ergonomic Technology Laboratory, Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Shin, A-reum (Applied Kinesiology and Ergonomic Technology Laboratory, Dept. of Physical Therapy, The Graduate School, Yonsei University)
  • 투고 : 2017.04.05
  • 심사 : 2017.05.10
  • 발행 : 2017.05.21
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초록

Background: Rounded shoulder posture (RSP), a postural abnormality, might cause shoulder pain and pathologic conditions. Although most previous research has investigated RSP focusing on the proximal structures of the shoulder, such as the scapula and pectoralis muscles, the relationship between RSP and anterior distal structures of the upper extremity, such as the biceps brachii muscle and elbow joint, is not clearly understood. Objects: This study aimed to investigate the correlations between RSP and the biceps brachii length, elbow joint angle (EJA), pectoralis minor length, general pectoralis major length, humeral head anterior translation (HHAT), glenohumeral internal rotation (IR), external rotation (ER), and horizontal adduction (HAD). Methods: Twelve subjects with RSP (6 male, 6 female) were recruited. All subjects fulfilled the RSP criteria indicated by a distance ${\geq}2.5cm$ from the posterior aspect of the acromion to the table in the supine position. The examiner measured each of the following parameters twice: RSP, biceps brachii length, EJA, pectoralis minor length, pectoralis major length, HHAT, glenohumeral IR, ER, and HAD. Pearson's correlation coefficient(r) was used to assess the correlation between RSP and all the variables. Results: There was a significant moderate positive correlation between RSP and biceps brachii length (r=.55, p=.032), moderate negative correlation between RSP and pectoralis minor length (r=-.62, p=.015), and moderate positive correlation between RSP and HHAT (r=.53, p=.038). Conclusion: The biceps brachii length, pectoralis minor length, and HHAT could be used to evaluate patients with RSP. Better understanding of the correlation between these factors and RSP could help in the development of effective methods to treat patients with this condition in clinical management.

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