Shoulder horizontal abduction stretching effectively increases shear elastic modulus of pectoralis minor muscle

Umehara, Jun; Nakamura, Masatoshi; Fujita, Kosuke; Kusano, Ken; Nishishita, Satoru; Araki, Kojiro; Tanaka, Hiroki; Yanase, Ko; Ichihashi, Noriaki

doi:10.1016/j.jse.2016.12.074

Cited by 36 publications

(29 citation statements)

References 29 publications

(41 reference statements)

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“…All regions of supraspinatus muscle elasticity were quantified by SWE and showed satisfactory intra- and interobserver reliabilities: ICC = 0.945–0.970 or ICC = 0.882–0.948 [24]. Only intraoperator reliability (ICC ≥ 0.90) was used to evaluate the pectoralis minor muscle in six different positions [25]. To summarize, SWE is a highly repeatable technique for quantifying muscle elasticity.…”

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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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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“…The traction on scapular posture can be reduced by performing exercises that increase muscle flexibility [50,133]. Stretching exercises with shoulder horizontal abduction at 90 • and 150 • of elevation have been demonstrated to be useful in increasing pectoralis minor flexibility and the ER and posterior tilt of the scapula during forward elevation [50,133,134] (Figure 3). Scapular stabilization exercises, based on stretching and strengthening, aim to improve muscle strength and joint position sense [26,135,136].…”

Section: Treatmentmentioning

confidence: 99%

Scapular Dyskinesis: From Basic Science to Ultimate Treatment

Longo

Ambrogioni

Berton

et al. 2020

IJERPH

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Background: This study intends to summarize the causes, clinical examination, and treatments of scapular dyskinesis (SD) and to briefly investigate whether alteration can be managed by a precision rehabilitation protocol planned on the basis of features derived from clinical tests. Methods: We performed a comprehensive search of PubMed, Cochrane, CINAHL and EMBASE databases using various combinations of the keywords “Rotator cuff”, “Scapula”, “Scapular Dyskinesis”, “Shoulder”, “Biomechanics” and “Arthroscopy”. Results: SD incidence is growing in patients with shoulder pathologies, even if it is not a specific injury or directly related to a particular injury. SD can be caused by multiple factors or can be the trigger of shoulder-degenerative pathologies. In both cases, SD results in a protracted scapula with the arm at rest or in motion. Conclusions: A clinical evaluation of altered shoulder kinematics is still complicated. Limitations in observing scapular motion are mainly related to the anatomical position and function of the scapula itself and the absence of a tool for quantitative SD clinical assessment. High-quality clinical trials are needed to establish whether there is a possible correlation between SD patterns and the specific findings of shoulder pathologies with altered scapular kinematics.

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“…Few investigators have attempted to understand the relationship between muscle elasticity and passive muscle force. 24 25) For example, Nordez et al 24) used transient elastography to measure shear elastic modulus of human gastrocnemius muscle and reported a fairly strong linear relationship. Furthermore, Umehara et al 25) evaluated the effective stretching position of the pectoralis minor with shear elastic modulus measurements.…”

Section: Discussionmentioning

confidence: 99%

What Is the Most Effective Eccentric Stretching Position in Lateral Elbow Tendinopathy?

et al. 2018

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BackgroundA variety of treatment options suggest that the optimal treatment strategy for lateral elbow tendinopathy (LET) is not known, and further research is needed to discover the most effective treatment for LET. The purpose of the present study was to verify the most effective position of eccentric stretching for the extensor carpi radialis brevis (ECRB) in vivo using ultrasonic shear wave elastography.MethodsA total of 20 healthy males participated in this study. Resting position was defined as 90° elbow flexion and neutral position of the forearm and wrist. Elongation of the ECRB was measured for four stretching maneuvers (forearm supination/pronation and wrist extension/flexion) at two elbow angles (90° flexion and full extension). The shear elastic modulus, used as the index of muscle elongation, was computed using ultrasonic shear wave elastography for the eight aforementioned stretching maneuverangle combinations.ResultsThe shear elastic modulus was the highest in elbow extension, forearm pronation, and wrist flexion. The shear elastic moduli of wrist flexion with any forearm and elbow position were significantly higher than the resting position. There was no significant difference associated with elbow and forearm positions except for elbow extension, forearm pronation, and wrist flexion positions.ConclusionsThis study determined that elbow extension, forearm pronation, and wrist flexion was the most effective eccentric stretching for the ECRB in vivo.

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Shoulder horizontal abduction stretching effectively increases shear elastic modulus of pectoralis minor muscle

Abstract: This study determined that shoulder horizontal abduction at an elevation of 90° and horizontal abduction at an elevation of 150° were the most effective stretching maneuvers for the pectoralis minor muscle in vivo.

Cited by 36 publications

References 29 publications

Modulation in Elastic Properties of Upper Trapezius with Varying Neck Angle

Modulation in Elastic Properties of Upper Trapezius with Varying Neck Angle

Scapular Dyskinesis: From Basic Science to Ultimate Treatment

What Is the Most Effective Eccentric Stretching Position in Lateral Elbow Tendinopathy?

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