Muscle Activation of Selected Shoulder Muscles During Unilateral Wall and Bench Press Tasks Under Submaximal Isometric Effort

Tucci, Helga Tatiana; Ciol, Márcia A.; Araújo, Rodrigo Cappato de; Andrade, Rodrigo; Martins, Jaqueline; McQuade, Kevin J.; Oliveira, Anamaria Siriani de

doi:10.2519/jospt.2011.3418

Cited by 18 publications

(16 citation statements)

References 37 publications

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“…The load cell was linked to a digital display showing the force, which was connected to a supporting board (702 × 300 × 18-mm plate). The isometric effort during shoulder protraction was calculated according to the maximal force applied during shoulder protraction and categorized as follows: (1) 100% maximal isometric effort (100 MIE), (2) 80% maximal isometric effort (80 MIE), and (3) 60% maximal isometric effort (60 MIE) (Tucci et al, 2011). Before the measurements were taken, each participant was familiarized with the shoulder protraction process, to maintain MIE to within ± 5% of the target level, during a 10-min practice session completed in the sitting position.…”

Section: Methodsmentioning

confidence: 99%

Electromyographic activity of the serratus anterior and pectoralis major during isometric scapular protraction at different resistance intensities in subjects with and without a winged scapula

Kim

Ahn

Park

et al. 2019

Clinical Biomechanics

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Section: Methodsmentioning

confidence: 99%

Electromyographic activity of the serratus anterior and pectoralis major during isometric scapular protraction at different resistance intensities in subjects with and without a winged scapula

Kim

Ahn

Park

et al. 2019

Clinical Biomechanics

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“…12,13 Most CKC exercises, especially those involving push, generally reveal high SA activity, and thus may be recommended to restore muscle balance and shoulder function. [14][15][16][17] However, the high activation of the SA may not be appropriate if the UT activation remains high during the given exercise, as muscle balance may not be restored and scapulohumeral function may not be improved. 6,7 It is imperative to know this ratio to better decide whether a certain exercise should be prescribed or not.…”

Section: Contextmentioning

confidence: 99%

Muscle Activity Ratios of Scapular Stabilizers During Closed Kinetic Chain Exercises in Healthy Shoulders: A Systematic Review

Karabay¹,

Emük²,

Kaya³

2020

Journal of Sport Rehabilitation

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Context: Selective strengthening of scapular stabilizers is one of the emphases of the recent literature. Closed kinetic chain (CKC) exercises are used extensively in shoulder rehabilitation. However, a limited number of studies have reported scapular muscle ratios during CKC exercises. Objectives: To determine the CKC exercises producing the optimal ratios of the scapular stabilizer muscles in healthy shoulders. Evidence Acquisition: A systematic search within PubMed, Embase, CINAHL Plus, and SPORTDiscus with Full Text and ULAKBIM National Medical Database was performed up to January 2018. Studies were selected according to the predetermined criteria. If the pooled mean ratios (upper trapezius [UT]/middle trapezius [MT], UT/lower trapezius [LT], and UT/serratus anterior [SA]), which were calculated from the percentage of maximum voluntary contractions of muscles, were <0.60, these exercises were considered as ideal for higher activation of the MT, LT, and SA than the UT. Evidence Synthesis: The search identified 1284 studies, and 29 observational studies were included for review. Seventy-nine CKC exercises were determined. Four exercises for the MT, 9 for the LT, and 59 for the SA were identified from the articles as being optimal exercises to activate the specified muscle more than the UT. Conclusions: This review identified optimal CKC exercises that provide good ratios between the MT, LT, and SA with the UT. Most exercises have optimal UT/SA ratios, but some exercises performed on unstable surfaces may lead to excessive activation of the UT relative to the SA. For the UT/MT, the isometric low row, inferior glide, and half supine pull-up with slings are the ideal exercises. Isometric one-hand knee push-up variations seem to be the best choice for the UT/LT. The results suggest that many CKC exercises may be utilized to enhance scapular muscle balance when rehabilitating shoulder pathology.

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“…Closed kinetic chain (CKC) or open kinetic chain (OKC) shoulder exercises are frequently performed to strengthen the shoulder muscles5, 6, 8,9,10 ) . Compared to OKC exercises, CKC exercises have greater proximal joint stability, enhanced joint compression and reduced shear force8,9,10 ) .…”

Section: Introductionmentioning

confidence: 99%

“…Compared to OKC exercises, CKC exercises have greater proximal joint stability, enhanced joint compression and reduced shear force8,9,10 ) . Moreover, clinicians prefer CKC exercises to OKC exercises in the early stages of rehabilitation because axial loading through CKC exercises helps to restore proprioception9, 10 ) .…”

Section: Introductionmentioning

confidence: 99%

Differences in Muscle Activities of the Infraspinatus and Posterior Deltoid during Shoulder External Rotation in Open Kinetic Chain and Closed Kinetic Chain Exercises

Kang

Jang

2014

J Phys Ther Sci

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[Purpose] This study investigated the changes in electromyographic (EMG) activities of the infraspinatus and posterior deltoid muscles during shoulder external rotation under open kinetic chain (OKC) and closed kinetic chain (CKC) exercise conditions. [Subjects] In total, 15 healthy males participated in this study. [Methods] Subjects performed shoulder external rotations under CKC and OKC conditions while standing with and without weight support provided by a height-adjustable table. Pressure biofeedback was used to ensure a constant amount of weight support. The activities of the infraspinatus and posterior deltoid muscles during shoulder external rotation were measured using a wireless surface EMG system. The paired t-test was used to compare the EMG activities of the infraspinatus and the posterior deltoid muscles and the ratio of the infraspinatus to the posterior deltoid during shoulder external rotation under OKC and CKC conditions. [Results] The EMG activity of the infraspinatus and the ratio of the infraspinatus to the posterior deltoid activities were significantly increased, whereas the posterior deltoid activity was significantly decreased under the CKC condition compared to the OKC condition. [Conclusion] Clinicians should consider the CKC shoulder external rotation exercise when they wish to selectively strengthen the infraspinatus.

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Muscle Activation of Selected Shoulder Muscles During Unilateral Wall and Bench Press Tasks Under Submaximal Isometric Effort

Cited by 18 publications

References 37 publications

Electromyographic activity of the serratus anterior and pectoralis major during isometric scapular protraction at different resistance intensities in subjects with and without a winged scapula

Electromyographic activity of the serratus anterior and pectoralis major during isometric scapular protraction at different resistance intensities in subjects with and without a winged scapula

Muscle Activity Ratios of Scapular Stabilizers During Closed Kinetic Chain Exercises in Healthy Shoulders: A Systematic Review

Differences in Muscle Activities of the Infraspinatus and Posterior Deltoid during Shoulder External Rotation in Open Kinetic Chain and Closed Kinetic Chain Exercises

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