Effects of gender and hand dominance on size of the lower trapezius muscle

Uthaikhup, Sureeporn; Wannaprom, Nipaporn; Kummaung, Panuwat

doi:10.1002/mus.24570

Cited by 7 publications

(6 citation statements)

References 18 publications

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“…Consistent with a previous study, thickness of the lower trapezius muscle was greater on the right (dominant) side than the left (nondominant) side in the healthy controls, which supports a side dominant difference in thickness of the lower trapezius muscle. However, in contrast to healthy controls, the results demonstrated no side difference in thickness of the lower trapezius muscle in individuals with chronic neck pain.…”

Section: Discussionsupporting

confidence: 90%

“…The ultrasound procedures were performed according to a previous study . Participants were positioned prone on a treatment plinth with the head in midline, the arms to the side and the palms facing up.…”

Section: Methodsmentioning

confidence: 99%

“…The purpose of this study was to examine thickness of the lower trapezius muscle at rest and the percentage change in muscle thickness with contraction between individuals with and without unilateral neck pain. The effects of gender and side dominance on lower trapezius muscle thickness have been revealed in a previous study . Thus only right‐handed women were accepted for this study.…”

mentioning

confidence: 99%

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Decreased thickness of the lower trapezius muscle in patients with unilateral neck pain

2016

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Section: Discussionsupporting

confidence: 90%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Decreased thickness of the lower trapezius muscle in patients with unilateral neck pain

2016

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“…Secondly, this work may be the first study to evaluate potential factors affecting UT elasticity with SWE, including gender, age, UT thickness and BMI. No previous studies have analyzed so many factors on muscle elasticity as we did 36,37 . Thirdly and most important, the clinical significance of this study lies in providing quantitative baseline measurements for UT muscle strain through determining the reference ranges of normal UT elasticity during different shoulder abduction with SWE.…”

Section: Discussionmentioning

confidence: 93%

Determination of reference ranges for normal upper trapezius elasticity during different shoulder abduction using shear wave elastography: a preliminary study

Wang

Xiang

Zhu

et al. 2020

Sci Rep

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The purpose of this study was to determine the reference ranges of normal upper trapezius (UT) elasticity during different shoulder abduction using shear wave elastography (SWE). Mean shear wave velocity (SWV) of UT elasticity in eighty healthy participants were measured at left and right shoulder 0° abduction and 90° passive abduction (L0°, R0°, L90°, R90°) with SWE. The effects of potential factors (gender, UT thickness, age, and body mass index) on UT elasticity were analyzed. The reference ranges of normal UT elasticity were calculated by using the normal distribution method. UT elasticity was significantly different among various shoulder abduction (P < 0.0001). UT elasticity was significantly higher in males at both L90° (P < 0.05) and R90° (P < 0.01) than in females. The reference ranges of normal UT elasticity were 2.90–4.01 m/s at L0° and 3.01–4.29 m/s at R0°, and were 4.90–6.40 m/s in males and 4.40–6.20 m/s in females at L90°, 5.20–7.02 m/s in males and 4.71–6.80 m/s in females at R90°. Our results suggest that gender should be considered when determining the reference ranges of normal UT elasticity at L90° and R90° with SWE. These values may provide quantitative baseline measurements for the assessment of UT muscle strain in the future.

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“…The high utilization of the dominant versus the nondominant side may contribute to the long-term usage of the extensor muscles, which reasonably explains the differences in stiffness. Uthaikhup et al [30] examined the thickness of the lower trapezius and found greater lower trapezius muscle thickness on the dominant versus the nondominant side of 0.43 ± 0.02 mm. Fatigue of the upper trapezius also differed bilaterally; the upper trapezius on the dominant side was less fatigable by surface EMG [31].…”

Section: Discussionmentioning

confidence: 99%

Modulation in Elastic Properties of Upper Trapezius with Varying Neck Angle

Zhang

Liu

et al. 2019

Applied Bionics and Biomechanics

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Background. Neck and shoulder complaints caused by poor posture may influence upper trapezius stiffness. The relationship between the shear elastic modulus of the upper trapezius and cervical flexion angles is unknown. Therefore, it is essential to assess upper trapezius stiffness during cervical flexion. The objectives of this study were to (1) determine the intra- and interoperator reliabilities of evaluating upper trapezius stiffness and calculate the minimal detectable change (MDC); (2) examine the elastic modulus alterations of the upper trapezius during cervical flexion; and (3) explore the difference of upper trapezius stiffness between the dominant and nondominant sides. Methods. Twenty healthy male participants were recruited in this study. The shear modulus of the upper trapezius was evaluated by two independent investigators using shear wave elastography (SWE) during cervical flexion at 0° and 50°. Findings. The intraoperator (intraclass correlation coefficient ICC=0.85–0.86) and interoperator (ICC=0.94–0.98) reliabilities for measuring the shear elastic modulus of the upper trapezius during the cervical flexion ranged from good to excellent. An increase of 35.58% in upper trapezius stiffness was found at 0° to 50° of cervical flexion, and the MDC was 7.04 kPa. In addition, a significant difference was obtained in the elastic modulus of the upper trapezius muscle between the dominant and nondominant sides (P<0.05). Conclusions. Our findings revealed that SWE could quantify the elastic modulus of the upper trapezius and monitor its changes. Therefore, further studies are required to delineate the modulation in upper trapezius muscle stiffness among subjects with neck and shoulder pain.

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Effects of gender and hand dominance on size of the lower trapezius muscle

Abstract: Gender and side dominance differences should be controlled for when investigating lower trapezius muscle thickness.

Cited by 7 publications

References 18 publications

Decreased thickness of the lower trapezius muscle in patients with unilateral neck pain

Decreased thickness of the lower trapezius muscle in patients with unilateral neck pain

Determination of reference ranges for normal upper trapezius elasticity during different shoulder abduction using shear wave elastography: a preliminary study

Modulation in Elastic Properties of Upper Trapezius with Varying Neck Angle

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