ArticlePeerJ2021
Isokinetic force-power profile of the shoulder joint in males participating in CrossFit training and competing at different levels.
Article in PeerJ, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 4 papers.
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.
Impact of Jump Rope Training on the Isokinetic Shoulder Profile in CrossFit Practitioners
Who cites it
4 citing papers in PubMed, 11 citations in OpenAlex.
- Is it relevant to distinguish scapulothoracic abnormal motion (STAM) type in professional overhead athletes?JSES international · 2026Article
- Demographic, Epidemiological and Functional Profile Models of Greek CrossFit Athletes in Relation to Shoulder Injuries: A Prospective Study.Journal of functional morphology and kinesiology · 2025Article
- Sport-Related Injuries in Portuguese CrossFitMuscles (Basel, Switzerland) · 2025Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 5 institutions in 6 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAs participants who engage in CrossFit training and competition perform a large volume of high intensity overhead activities, injuries to the shoulder are one of the most common in this sport. Previous research in other sports has indicated that the isokinetic force power profile of the shoulder joint (IPSJ) rotator muscles may assist in the prediction of shoulder injury.
aimTherefore, the objective of this study was to determine the IPSJ in males engaged in CrossFit training at different competitive levels.
methodsIn a cross-sectional study design, participants (age, 24.1 ± 2.7 years) classified as 'beginner' (
resultsThe IPSJ showed greater torque and power values in those who competed at the advanced level as compared to those at a lower competitive level (
conclusionThese findings suggest greater development of the shoulder internal rotators and a higher probability of shoulder injury in CrossFit athletes at the advanced competitive level. Based on these results, participants engaged in CrossFit training and competition may wish to increase the volume of training for the shoulder external rotator muscles to complement the large increases in shoulder internal rotator strength that occur as a part of their regular training regimes.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.