ArticleBMC musculoskeletal disorders2022
Altered muscle recruitment patterns during isometric shoulder abduction in individuals with chronic upper trapezius pain: a cross sectional study.
Article in BMC musculoskeletal disorders, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 11 citations in OpenAlex.
- Trial
- Spatial distribution of electromyographic activity in the vastus lateralis muscle during different contraction tasks in patients with heart failure.Heart and vessels · 2026Article
- Continuous wavelet transform-based analysis of shoulder muscle fatigue during dynamic abduction: a surface electromyography study.Frontiers in bioengineering and biotechnology · 2026Article
- Shoulder angle effects on neuromuscular activation and rapid force production: sEMG time-frequency and force-time analyses.Frontiers in bioengineering and biotechnology · 2026Article
- Shoulder kinematic and muscle recruitment pattern changes in upper trapezius myofascial trigger points: a controlled observational study.BMC musculoskeletal disorders · 2025Observational
- Effectiveness of intramuscular electrical stimulation using conventional and inverse electrode placement methods on pressure pain threshold and electromyographic activity of the upper trapezius muscle with myofascial trigger points: a randomized clinical trial.The Korean journal of pain · 2025Article
- Changes in Shoulder Girdle Muscle Activity and Ratio During Pilates-Based Exercises.Life (Basel, Switzerland) · 2025Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundUpper trapezius (UT) pain with myofascial trigger points (MTrPs) can affect movement at the glenohumeral joint as well as at the scapulothoracic joint. The investigation of muscle recruitment patterns can discern motor control strategies. The purpose of this study was to compare shoulder muscle recruitment patterns and muscle activity according to various loads between individuals with and without chronic UT pain.
methodsIn this cross-sectional study, twenty-four participants that had UT pain with MTrPs and sex, age, body weight matched 24 controls with no UT pain were recruited. Surface EMG electrodes were attached to the UT, the serratus anterior (SA), the lower trapezius (LT) and the middle deltoid (MD). All participants performed isometric shoulder abduction with a load of 25%, 50%, or 75% of the maximum strength at 60° of shoulder abduction. The EMG activity, the activity ratio (SA/UT, LT/UT, MD/UT), and the relative contribution of each muscle activity were calculated.
resultsMD activity was significantly decreased in the UT pain group compared to that in the control group (p < 0.05). The EMG activity ratio of SA/UT (p < 0.025) and the relative contribution of SA activity to shoulder abduction (p < 0.05) were significantly greater in the UT pain group than in the control group in the 25% loading condition.
conclusionThe results of present study showed that UT pain with MTrPs may increase the relative contribution of SA activity and decrease MD activity at low loads. Altered recruitment patterns of scapular upward rotators can be altered in the proper scapular position, which results in decreased MD activity. Clinicians should consider altered recruitment patterns when managing UT pain.
trial registrationClinical Research Information Service: Clinical Research Information Service (KCT0007370; 08/06/2022).
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