SF-36 and DFOS outcome measures in healthy and injured elite dancers
Bronner S, Spriggs J, Ojofeitimi S.
Analysis of Dance and Movement (ADAM) Center, Long Island University, Brooklyn, NY, USA
PURPOSE: Professional dancers sustain lower extremity injuries at alarming rates, with 57-72% new injuries in any given year. Dance medicine has no dance-specific functional outcome tools to study efficacy of medical interventions or to determine performance readiness as a discharge criterion. The Dance Functional Outcome System (DFOS) was developed for use with ballet and modern dancers of all training levels following lower extremity injury. The purpose of this study was to assess reliability and sensitivity to change of the DFOS and SF-36, in professional dancers.
METHODS: 53 healthy professional dancers underwent one time DFOS and SF-36 testing. 9 dancers who subsequently sustained injury, and 14 healthy dancers were tested again and compared using a repeated measures ANOVA design (P<0.05). Means (SD) for 53 healthy dancers were calculated for the DFOS and SF-36 as a normative baseline.
RESULTS: There were significant differences between Healthy and Injured dancers for Time, Group, and Time * Group (P<0.01) in the DFOS Part I, and in the SF-36 Physical Summary, and three of the four Physical component scores. Injured subjects, measured at four time periods, revealed a significant quadratic trend (P<0.01) in these measures. Comparison of healthy professional dancers to age-matched US norms suggests dancers may experience psychological distress. CONCLUSION: Preliminary analysis of the DFOS and SF-36 suggests that these instruments are responsive to musculoskeletal injury and recovery in a professional dance population. Further study of the sensitivity, specificity, and validity of the DFOS, in conjunction with the SF-36, in injured dancers is now underway.
RELEVANCE: The DFOS may be useful to dance researchers as a measurement tool for treatment efficacy. Inclusion of a generic health measure such as the SF-36 provides additional insight into the effect of musculoskeletal injury on well-being in this population.
ACKNOWLEDGEMENTS: This research was supported in part by the Fan Fox and Leslie R Samuels Foundation and NIH MBRS Grant #SO6 GM54650-04.
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