RT Journal Article SR Electronic T1 Lean and mean? Associations of level of performance, chronic injuries and BMI in sport climbing JF BMJ Open Sport & Exercise Medicine JO BMJ OPEN SP EX MED FD BMJ Publishing Group Ltd SP e000437 DO 10.1136/bmjsem-2018-000437 VO 5 IS 1 A1 Gudmund Grønhaug YR 2019 UL http://bmjopensem.bmj.com/content/5/1/e000437.abstract AB Objectives To assess possible associations between performance level (achieved level of difficulty), chronic injuries and body mass index (BMI) in sport climbing.Method Retrospective survey.Setting Web-based questionnaire.Participants 667 active climbers (385 reported having chronic injuries).Outcome measure BMI, performance level in sport climbing, onset of a climbing-related injury, preferred style of climbing, education, gender.Statistics Descriptive statistics and general linear model(GLM) performed with SPSS V.25 for windows.Result No associations were found between level of performance in sport climbing, onset of a climbing-related injury, preferred style of climbing, education, gender and BMI.Conclusion BMI is not associated with climbing-related chronic injury or level of performance in climbing. The average BMI of climbers up to the elite level is similar to that of a lower rate of performance.Clinical relevance The findings in this study suggest that there is no need for maintaining a low BMI to be able to reach elite levels in climbing.