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Muscle Cramping During A 161-Km Ultramarathon: Comparison Of Characteristics Of Those With And Without Cramping, Martin D. Hoffman, Kristin J. Stuempfle
Muscle Cramping During A 161-Km Ultramarathon: Comparison Of Characteristics Of Those With And Without Cramping, Martin D. Hoffman, Kristin J. Stuempfle
Health Sciences Faculty Publications
Background: This work sought to identify characteristics differing between those with and without muscle cramping during a 161-km ultramarathon.
Methods: In this observational study, race participants underwent body weight measurements before, during, and after the race; completed a post-race questionnaire about muscle cramping and “near” cramping (controllable, not reaching full-blown cramping), drinking strategies, and use of sodium supplementation during four race segments; and underwent a post-race blood draw for determination of serum sodium and blood creatine kinase (CK) concentrations.
Results: The post-race questionnaire was completed by 280 (74.5 %) of the 376 starters. A post-race blood sample was provided by …