Will Prone Trunk Extension Affect Scapular and Thoracic Kinematics and Muscle Activities During Scapular Posterior Tilting Exercise in Subjects With Round Shoulder and Flexed Posture?
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Background: Round shoulder posture, results from excessive flexed posture of the thorax, is defined as a position of scapular protraction, anterior tipping, and downward rotation. However, previous studies have focused on only passive position of the thorax during scapular posterior tilting (SPT) and have not reported on SPT combined with correction of flexed posture. Objects: The aim of this study was to compare effects of SPT and SPT with prone trunk extension (SPT + PTE) on activities of the lower trapezius, serratus anterior, and thoracic erector spinae and degree of posture in subjects with round shoulder and flexed posture. Methods: Fifteen subjects with round shoulder and flexed posture were recruited. The caliper was used to measure the degree of round shoulder and flexed posture. Electromyography was performed to collect data of muscle activities. Paired t-test was used to compare two exercise (α=.05). Results: When SPT + PTE was applied, the degree of round shoulder posture (p=.001) and flexed posture (p=.039) significantly decreased compared with that when SPT was applied. The lower trapezius activity significantly increased in the SPT + PTE condition compared with that in the SPT condition (p=.026). There were no significant differences in serratus anterior activity between SPT + PTE and SPT. The thoracic erector spinae activity significantly increased in the SPT + PTE condition compared with that in the SPT condition (p=.014). Conclusion: SPT + PTE might be one of the effective methods to enhance activities of lower trapezius and thoracic erector spinae, and to reduce round shoulder posture and flexed posture in subjects with round shoulder and flexed posture.
Abstract
Background: Round shoulder posture, results from excessive flexed posture of the thorax, is defined as a position of scapular protraction, anterior tipping, and downward rotation. However, previous studies have focused on only passive position of the thorax during scapular posterior tilting (SPT) and have not reported on SPT combined with correction of flexed posture. Objects: The aim of this study was to compare effects of SPT and SPT with prone trunk extension (SPT + PTE) on activities of the lower trapezius, serratus anterior, and thoracic erector spinae and degree of posture in subjects with round shoulder and flexed posture. Methods: Fifteen subjects with round shoulder and flexed posture were recruited. The caliper was used to measure the degree of round shoulder and flexed posture. Electromyography was performed to collect data of muscle activities. Paired t-test was used to compare two exercise (α=.05). Results: When SPT + PTE was applied, the degree of round shoulder posture (p=.001) and flexed posture (p=.039) significantly decreased compared with that when SPT was applied. The lower trapezius activity significantly increased in the SPT + PTE condition compared with that in the SPT condition (p=.026). There were no significant differences in serratus anterior activity between SPT + PTE and SPT. The thoracic erector spinae activity significantly increased in the SPT + PTE condition compared with that in the SPT condition (p=.014). Conclusion: SPT + PTE might be one of the effective methods to enhance activities of lower trapezius and thoracic erector spinae, and to reduce round shoulder posture and flexed posture in subjects with round shoulder and flexed posture.
참고문헌 (31)
- J. M. Ball, "Spinal extension exercises prevent natural progression of kyphosis", Osteoporosis International, 20(3), pp.481~489 (2009), Springer Nature[DOI]
- Balzini L, "Clinical characteristics of flexed posture in elderly women", J Am Geriatr Soc, 51(10), pp.1419~1426 (2003)
- Ashley K. Cole, "Scapular Bracing and Alteration of Posture and Muscle Activity in Overhead Athletes With Poor Posture", Journal of Athletic Training, 48(1), pp.12~24 (2013), Journal of Athletic Training[DOI]
- Criswell E, "Cram’s Introduction to Surface Electromyo", pp.265~349 (2010), Jones & Bartlett Publishers
- Richard A. Ekstrom, "Surface Electromyographic Analysis of Exercises for the Trapezius and Serratus Anterior Muscles", Journal of Orthopaedic & Sports Physical Therapy, 33(5), pp.247~258 (2003), Journal of Orthopaedic & Sports Physical Therapy (JOSPT)[DOI]
- Margaret A. Finley, "Effect of sitting posture on 3-dimensional scapular kinematics measured by skin-mounted electromagnetic tracking sensors", Archives of Physical Medicine and Rehabilitation, 84(4), pp.563~568 (2003), Elsevier BV[DOI]
- Renata Neves Granito, "Comparison of thoracic kyphosis degree, trunk muscle strength and joint position sense among healthy and osteoporotic elderly women: A cross-sectional preliminary study", Archives of Gerontology and Geriatrics, 54(2), pp.e199~e202 (2012), Elsevier BV[DOI]
- Gray JC, "Interrelationship of the spine, rib cage, and shoulder. Physical Therapy of the Shoulder", pp.87~130 (2012), Elsevier
- Ha SM, "Comparison of electromyographic activity of the lower trapezius and serratus anterior muscle in different arm-lifting scapular posterior tilt exercises", Phys Ther Sport, 13(4), pp.227~232 (2012)[DOI]
- M HINMAN, "Comparison of thoracic kyphosis and postural stiffness in younger and older women*1", The Spine Journal, 4(4), pp.413~417 (2004), Elsevier BV[DOI]
- Hongo M, "Effects of reducing resistance, repetitions, and frequency of backstrengthening exercise in healthy young women : A pilot study", Arch Phys Med Rehabil, 86(7), pp.1299~1303 (2005)
- Con Hrysomallis, "Effectiveness of Strengthening and Stretching Exercises for the Postural Correction of Abducted Scapulae: A Review", Journal of Strength and Conditioning Research, 24(2), pp.567~574 (2010), Ovid Technologies (Wolters Kluwer Health)[DOI]
- W. B. Katzman, "Study of Hyperkyphosis, Exercise and Function (SHEAF) Protocol of a Randomized Controlled Trial of Multimodal Spine-Strengthening Exercise in Older Adults With Hyperkyphosis", Physical Therapy, 96(3), pp.371~381 (2016), Oxford University Press (OUP)[DOI]
- Kebaetse M, "Thoracic position effect on shoulder range of motion, strength, and three-dimensional scapular kinematics", Arch Phys Med Rehabil, 80(8), pp.945~950 (1999)
- Kendall FP, "Muscles: Testing and Function With Posture and Pain" (2005), Lippincott Williams & Wilkins
- W. Ben Kibler, "Electromyographic Analysis of Specific Exercises for Scapular Control in Early Phases of Shoulder Rehabilitation", The American Journal of Sports Medicine, 36(9), pp.1789~1798 (2017), SAGE Publications[DOI]
- Ji-hyun Lee, "The effect of scapular posterior tilt exercise, pectoralis minor stretching, and shoulder brace on scapular alignment and muscles activity in subjects with round-shoulder posture", Journal of Electromyography and Kinesiology, 25(1), pp.107~114 (2015), Elsevier BV[DOI]
- Ji-Hyun Lee, "Various shrug exercises can change scapular kinematics and scapular rotator muscle activities in subjects with scapular downward rotation syndrome", Human Movement Science, 45, pp.119~129 (2016), Elsevier BV[DOI]
- Ludewig PM, "Alterations in shoulder kinematics and associated muscle activity in people with symptoms of shoulder impingement", Phys Ther, 80(3), pp.276~291 (2000)
- Magee DJ, "Orthopedic Physical Assessment" (2013), Elsevier Health Sciences
- McClure PW, "Shoulder function and 3-dimensional kinematics in people with shoulder impingement syndrome before and after a 6-week exercise program", Phys Ther, 84(9), pp.832~848 (2004)
- O’Sullivan PB, "The effect of different standing and sitting postures on trunk muscle activity in a pain-free population", Spine, 27(11), pp.1238~1244 (2002)
- Kyung-Hee Park, "Selective recruitment of the thoracic erector spinae during prone trunk-extension exercise", Journal of Back and Musculoskeletal Rehabilitation, 28(4), pp.789~795 (2015), IOS Press[DOI]
- Se-yeon Park, "Comparison of isometric exercises for activating latissimus dorsi against the upper body weight", Journal of Electromyography and Kinesiology, 25(1), pp.47~52 (2015), Elsevier BV[DOI]
- Sahrmann S, "Diagnosis and Treatment of Movement Impairment Syndromes", Braz J Phys Ther, 21(6), pp.391~399 (2017)
- Sahrmann S, "Cervical and Thoracic Spines", pp.2011, Elsevier
- Anabela G. Silva, "Head Posture and Neck Pain of Chronic Nontraumatic Origin: A Comparison Between Patients and Pain-Free Persons", Archives of Physical Medicine and Rehabilitation, 90(4), pp.669~674 (2009), Elsevier BV[DOI]
- Mehrsheed Sinaki, "The Role of Physical Activity in Bone Health: A New Hypothesis to Reduce Risk of Vertebral Fracture", Physical Medicine and Rehabilitation Clinics of North America, 18(3), pp.593~608 (2007), Elsevier BV[DOI]
- Sinaki M, "Correlation of back extensor strength with thoracic kyphosis and lumbar lordosis in estrogen-deficient women", Am J Phys Med Rehabil, 75(5), pp.370~374 (1996)
- Charles A. Thigpen, "Head and shoulder posture affect scapular mechanics and muscle activity in overhead tasks", Journal of Electromyography and Kinesiology, 20(4), pp.701~709 (2010), Elsevier BV[DOI]
- Vera-Garcia FJ, "MVC techniques to normalize trunk muscle EMG in healthy women", J Electromyogr Kinesiol, 20(1), pp.10~16 (2010)[DOI]
