Independent risk factors associated with a history of exercise associated muscle cramps (EAMC) among 21460 cycling race entrants (SAFER XXXVI): a descriptive cross-sectional study.
Carey Pohl, Martin Schwellnus, Nicola Sewry and 3 others
PMID 41418715WHAT IT FOUND
Among 21460 cyclists, 30.5% reported a lifetime history of exercise-associated muscle cramps.
Risk was significantly higher in those with more chronic diseases, allergies, medication use before or during events, and a history of cycling injuries. These factors were independent of age and sex.
Key findings
01The lifetime prevalence of exercise-associated muscle cramps was 30.5%, and the retrospective annual incidence was 18.6%.
02Independent risk factors for a history of cramps included a higher chronic disease score, allergies, medication use before or during events, and a history of acute or gradual onset injuries.
03The quadriceps were the most commonly affected muscle group (47.7%), followed by the calf (27.8%) and hamstrings (20.4%).
STILL TO COME
How it was doneWhat they found
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What it does not show
The study is cross-sectional, so it cannot establish a cause-and-effect relationship between the identified factors and muscle cramps. All data, including the history of cramps and medical conditions, were self-reported, which introduces the possibility of recall bias. There was a significant difference in age distribution between those who consented to the study and the general race entrant population, with older cyclists being overrepresented in the study sample. The study did not capture specific details on medication types, dosages, or frequencies, limiting the ability to determine if the medication itself or the underlying condition was the risk factor. Cases with missing values were excluded from the analysis, which may have introduced selection bias.
Declared interests
The authors report no competing interests.
The easy way to misread this
Do not assume that these factors cause muscle cramps. The study only shows an association. Additionally, the risk factors identified are specific to a mass-participation cycling event and may not generalize to other populations or types of exercise.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →