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Ribeiro DC, Day A, Dickerson CR. Grade-IV inferior glenohumeral mobilization does not immediately alter shoulder and scapular muscle activity: a repeated-measures study in asymptomatic individuals. J Man Manip Ther. 2017;25(5):260-269doi: 10.1080/10669817.2017.1290310.
Ribeiro, D. C., Day, A., & Dickerson, C. R. (2017). Grade-IV inferior glenohumeral mobilization does not immediately alter shoulder and scapular muscle activity: a repeated-measures study in asymptomatic individuals. The Journal of manual & manipulative therapy, 25(5), 260-269. https://doi.org/10.1080/10669817.2017.1290310
Ribeiro, Daniel Cury, et al. "Grade-IV inferior glenohumeral mobilization does not immediately alter shoulder and scapular muscle activity: a repeated-measures study in asymptomatic individuals." The Journal of manual & manipulative therapy vol. 25,5 (2017): 260-269. doi: https://doi.org/10.1080/10669817.2017.1290310
Ribeiro DC, Day A, Dickerson CR. Grade-IV inferior glenohumeral mobilization does not immediately alter shoulder and scapular muscle activity: a repeated-measures study in asymptomatic individuals. J Man Manip Ther. 2017 Dec;25(5):260-269. doi: 10.1080/10669817.2017.1290310. Epub 2017 Feb 14. PMID: 29449768; PMCID: PMC5810780.
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J Man Manip Ther. 2017 Dec;25(5):260-269. doi: 10.1080/10669817.2017.1290310. Epub 2017 Feb 14.

Grade-IV inferior glenohumeral mobilization does not immediately alter shoulder and scapular muscle activity: a repeated-measures study in asymptomatic individuals.

The Journal of manual & manipulative therapy

Daniel Cury Ribeiro, Ashleigh Day, Clark R Dickerson

Affiliations

  1. Centre for Health, Activity and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand.
  2. Faculty of Applied Health Sciences, Department of Kinesiology, University of Waterloo, Waterloo, Canada.

PMID: 29449768 PMCID: PMC5810780 DOI: 10.1080/10669817.2017.1290310

Abstract

OBJECTIVES: To assess: (1) the presence of any carry-over effect between interventions; (2) the immediate effects of inferior shoulder mobilization on shoulder and scapular muscle activity; and (3) to compare muscle activity response between the control and mobilization conditions. Repeated measures, cross-over, pre-post intervention study with sample of convenience.

METHODS: Twenty-two asymptomatic individuals performed 10 repetitions of shoulder abduction before and after the control and mobilization, with a dosage of three sets of 30-s duration, with grade-IV. The order of intervention was randomized. Surface electromyography was used for recording activity of upper and lower trapezius; anterior, middle and posterior deltoids; supraspinatus; infraspinatus; and serratus anterior. Repeated measures mixed-model analysis of variance was used to assess immediate changes in muscle activity levels following inferior shoulder mobilization. Statistical parametric mapping (SPM) was used for comparing muscle activity waveforms between control and mobilization conditions throughout the range of motion.

RESULTS: No systematic changes in muscle activity levels were found between: (1) baseline and follow-up for each condition, at the concentric and eccentric phases of shoulder abduction; (2) control and mobilization conditions during the concentric and eccentric phases of shoulder abduction. SPM results suggested no differences in muscle activity pattern between conditions.

CONCLUSIONS: Inferior shoulder mobilization did not produce immediate effects on shoulder and scapular muscle activity. It is possible that the dose used was insufficient to generate an immediate neuromuscular response to the mobilization.

Keywords: Biomechanics; electromyography; manual therapies; manual therapy

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