Comparison of Muscle Activity Ratio of Upper Trapezius to Serratus Anterior During Shoulder Elevation Between Subjects With and Without Pain Experienced in Upper Trapezius
2
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
The aim of this study was to compare the activity of the upper trapezius (UT) and serratus anterior (SA) and ratio of UT to SA during shoulder elevations. Ten subjects with UT pain (UTP) and 13 subjects without UTP participated in this study. Subjects with a UTP of over five in a pain intensity visual analogue scale (0-10 ㎝) for more than 2 months and latent myofascial trigger points (MTrPs) in the UT muscle were included in the UTP group. Electromyography (EMG) data of UT and SA at 1st and 10th elevations were analyzed. Two-way repeated analyses of variance were used to compare the EMG activity of UT and SA and the ratio of UT to SA during shoulder elevations between groups with and without UTP. There was a significant increase in UT/SA ratio in the group with UTP compared to the group without UTP (p=.01). The activity of UT and SA measured at the 10th elevation was significantly greater than that in the first elevation (p<.05). The activity of SA was significantly greater in the group without UTP than the group with UTP (p=.03). However, there was no significant difference between groups with and without UTP in terms of UT activity (p=.28). These results indicate that UTP may have relevance to the increased muscle activity ratio of UT to SA during shoulder elevations.
Abstract
The aim of this study was to compare the activity of the upper trapezius (UT) and serratus anterior (SA) and ratio of UT to SA during shoulder elevations. Ten subjects with UT pain (UTP) and 13 subjects without UTP participated in this study. Subjects with a UTP of over five in a pain intensity visual analogue scale (0-10 ㎝) for more than 2 months and latent myofascial trigger points (MTrPs) in the UT muscle were included in the UTP group. Electromyography (EMG) data of UT and SA at 1st and 10th elevations were analyzed. Two-way repeated analyses of variance were used to compare the EMG activity of UT and SA and the ratio of UT to SA during shoulder elevations between groups with and without UTP. There was a significant increase in UT/SA ratio in the group with UTP compared to the group without UTP (p=.01). The activity of UT and SA measured at the 10th elevation was significantly greater than that in the first elevation (p<.05). The activity of SA was significantly greater in the group without UTP than the group with UTP (p=.03). However, there was no significant difference between groups with and without UTP in terms of UT activity (p=.28). These results indicate that UTP may have relevance to the increased muscle activity ratio of UT to SA during shoulder elevations.
참고문헌 (22)
- Barr AE, "Pathophysiological tissue changes associated with repetitive movement : A review of the evidence", Phys Ther, 82(2), pp.173~187 (2002)
- Bongers PM, "Psychosocial factors at work and musculoskeletal disease", Scand J Work Environ Health, 19(5), pp.297~312 (1993)
- Criswell E, "Cram’s Introduction to Surface Electromyography", pp.295~297 (2010), Jones &Bartlett Publishers
- Dennet X, "Overuse syndrome : A muscle biopsy study", Lancet, 1(8591), pp.905~908 (1998)
- English CJ, "Relations between upper limb soft tissue disorders and repetitive movements at work", Am J Ind Med, 27(1), pp.75~90 (1995)
- Ge HY, "Accelerated muscle fatigability of latent myofascial trigger points in humans", Pain Med, 13(7), pp.957~964 (2012)[DOI]
- Hislop HJ, "Daniels and Worthingham’s Muscle Testing: Techniques of Manual Examination", pp.62~72 (2007), WM Saunders
- Holtermann A, "The influence of biofeedback training on trapezius activity and rest during occupational computer work: A randomized controlled trial", Eur J Appl Physiol, 104(6), pp.983~989 (2008)
- Hughes RE, "Risk factors for work-related musculoskeletal disorders in an aluminum smelter", Am J Ind Med, 32(1), pp.66~75 (1997)
- Johansson JA, "Psychosocial work factors, physical work load and associated musculoskeletal symptoms among home care workers", Scand J Psychol, 36(2), pp.113~129 (1995)
- Kibler WB, "Scapular dyskinesis and its relation to shoulder pain", J Am Acad Orthop Surg, 11(2), pp.142~151 (2003)
- Larsson SE, "Chronic trapezius myalgia : Morphology and blood flow studied in 17 patients", Acta Orthop Scand, 61(5), pp.394~398 (1990)
- Lucas KR, "Latent myofascial trigger points: Their effects on muscle activation and movement efficiency", J bodywork mov ther, 8(3), pp.160~166 (2004)[DOI]
- Lucas KR, "Muscle activation patterns in the scapular positioning muscles during loaded scapular plane elevation: The effects of latent myofascial trigger points", Clin Biomech (Bristol. Avon), 25(8), pp.765~770 (2010)[DOI]
- Ludewig PM, "Relative balance of serratus anterior and upper trapezius muscle activity during push-up exercise", Am J Sports Med, 32(2), pp.484~493 (2004)
- Martins J, "Electromyographic amplitude ratio of serratus anterior and upper trapezius muscles during modified push-ups and bench press exercises", J Strength Cond Res, 22(2), pp.477~484 (2008)[DOI]
- McLean L, "The effect of postural correction on muscle activation amplitudes recorded from the cervicobrachial region", J Electromyogr Kinesiol, 15(6), pp.527~535 (2005)
- Piscione J, "Effect of mechanical compression due to load carrying on shoulder muscle fatigue during sustained isometric arm abduction : An electromyographic study", Eur J Appl Physiol, 97(5), pp.573~581 (2006)
- Sommerich CM, "Occupational risk factors associated with soft tissue disorders of the shoulder : A review of recent investigations in the literature", Ergonomics, 36(6), pp.697~717 (1993)
- Strøm V, "Work-induced pain, trapezius blood flux, and muscle activity in workers with chronic shoulder and neck pain", Pain, 144(1-2), pp.147~155 (2009)
- van der Windt DA, "Occupational risk factors for shoulder pain : A systematic review", Occup Environ Med, 57(7), pp.433~442 (2000)
- Wickham J, "Quantifying ‘normal’ shoulder muscle activity during abduction", J Electromyogr Kinesiol, 20(2), pp.212~222 (2010)[DOI]