Observational studyJournal of orthopaedic surgery and research2022
Function, strength, and muscle activation of the shoulder complex in Crossfit practitioners with and without pain: a cross-sectional observational study.
Observational study in Journal of orthopaedic surgery and research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05909592 (Epidemiological Profile and Shoulder Injury Risk Factors Investigation Among CrossFit Participants. Predictive Modeling for Shoulder Injury Incidence in These Populations.), which is not on this map. Cited by 8 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Epidemiological Profile and Shoulder Injury Risk Factors Investigation Among CrossFit Participants. Predictive Modeling for Shoulder Injury Incidence in These Populations.
Who cites it
8 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Intra-articular injections for shoulder arthritis in adults: a systematic review.European journal of medical research · 2025Pooled it
- Reverse arthroplasty compared to hemiarthroplasty and open reduction and internal fixation for displaced proximal humerus fracture in patients above 60: a Bayesian network meta-analysis.Archives of orthopaedic and trauma surgery · 2025Pooled it
- Prevalence of self-reported shoulder pain and shoulder function among uninjured CrossFit athletes in Pretoria, South Africa.South African journal of sports medicine · 2026Article
- The influence of hand position on scapular kinematics in push-ups: comparing athletes with chronic shoulder pain and healthy controls.Journal of orthopaedic surgery and research · 2025Article
- Normative Muscle Activation Patterns During One and Five Countermovement Jumps.Bioengineering (Basel, Switzerland) · 2025Article
- Muscle Activation Differences Between CKCUEST and Modified CKCUEST: A Pilot Study.Healthcare (Basel, Switzerland) · 2025Article
- Sport-Related Injuries in Portuguese CrossFitMuscles (Basel, Switzerland) · 2025Article
- Skilled reaching test for shoulder function assessment in a rat model of rotator cuff tear: a pilot study.BMC musculoskeletal disorders · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe shoulder joint is the most commonly injured joint in CrossFit practitioners, because of the high intensity and loads associated with this sport. Despite the large number of clinical cases, there is a shortage of studies that investigate influence of biomechanical aspects of upper limbs' injuries on CrossFit practitioners. This study hypothesized that there would be a difference in function, strength, and muscle activation between Crossfit practitioners with and without shoulder pain.
methodsWe divided 79 Crossfit practitioners into two groups according to whether they reported pain (n = 29) or no pain (n = 50) in the shoulder during Crossfit training. Muscle function, strength, and activation were assessed using the Disability Arm, Shoulder and Hand function questionnaire, Upper Quarter Y Balance Test and Closed Kinetic Chain Upper Extremity Stability Test shoulder tests, isometric muscle strength assessment by manual dynamometry and muscle activation by surface electromyography and pain report.
resultsThe function based on questionnaire was associated with pain (p = 0.004). We observed a statistically significant difference between the two groups only in the surface electromyography activity of the lower trapezius, and in the variables of shoulder pain and function (p = 0.038).
conclusionCrossfit practitioners with shoulder pain occurring during training showed good function and stability of the shoulder joint, but there was a reduction in the activation of stabilizing muscles, especially the lower trapezius. Trial registration Registro Brasileiro de Ensaios Clinico (Brasilian National Registry) with the ID: RBR-2gycyv.
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