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Vancouver Sun Run In Training clinics : an ordinal severity outcome measure and model of associated risk factors for running related pain Ryan, Michael Bernard

Abstract

This study determined the feasibility of implementing a severity outcome measure for the classification of running related pain, in addition to constructing a multivariate model of associated risk factors for injury in novice runners. Throughout the Greater Vancouver Metropolitan Area, 421 participants responded in 29 separate In Training clinics. Subjects, on average, self-selected their running experience as limited with average physical fitness, average competitive motive and at least vestigial symptoms from a previous injury. Participants in this 13-week training program were surveyed during the 6th and 12th week of the In Training clinics' 13-week duration. Questionnaire items included a VAS scale for indication of degree of rehabilitation from prior injury, physical fitness, competitive motive, weekly distance, running frequency and running experience. The Training Function Score is designed to quantify, using an ordinal scale, function limitations that result from running injuries. Subjects also indicated whether they were "currently experiencing an injury as a result of injury". Overall, 36.1% of subjects experienced an injury during the training program. Univariate regression showed degree of rehabilitation, physical fitness, competitive motive and weekly distance as significantly associated with injury. Multivariate results, however, indicate only degree of rehabilitation while physical fitness accounts for 25.4% of the explained variation in the severity outcome measure. Pratt analysis further shows that 90.1% of that explained variation is accounted for by degree of rehabilitation only. Initial psychometric characteristics demonstrate outcome measured ability to discriminate injured from non-injured (uninjured = 82.91, injured = 64.56 and clinically injured = 46.29*; significant difference p

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