Intra- and Inter-Rater Reliability of a Ballet-Based Dance Technique Screening Instrument

Authors

Shaw Bronner, ADAM Center
Ivetta Lassey, University of Nevada, Las Vegas
Jessie R. Lesar, University of Nevada, Las Vegas
Zachary G. Shaver, University of Nevada, Las Vegas
Catherine Turner, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

3-1-2020

Publication Title

Medical Problems of Performing Artists

Volume

35

Issue

1

First page number:

28

Last page number:

34

Abstract

© 2020 Science & Medicine. OBJECTIVES: To investigate intra- and inter-rater reliability of a ballet-based Dance Technique Screening Instrument used by physical therapists (PTs) and student PTs (SPTs) with prior dance medicine or dance experience. METHODS: Ten pre-professional dancers were video-recorded in the sagittal and frontal planes while performing four dance sequences: 1) second position grand plié; 2) développé à la seconde; 3) single-limb passé relevé balance; and 4) jumps in first position. Dance videos and electronic versions of the demographics and scoring forms were provided through a secure online survey to 28 PTs and SPTs who served as raters. Raters reviewed a training video prior to scoring the 10 dancers. Raters were asked to repeat their assessments 1-2 wks later. Intraclass correlations (ICC) were assessed for all-raters, PTs, and SPTs for total and sequence scores. RESULTS: Twenty-eight raters assessed the videos one time. Inter-rater reliability was ICC=0.98 (CI95=0.96-0.99) (all-raters), with PTs and SPTs displaying similar values (ICC=0.96 and 0.96, respectively). Eighteen raters (11 PTs, 7 SPTs) repeated the video analysis. Intra-rater reliability was ICC=0.78 (CI95=0.72-0.83) with PTs ICC=0.81 and SPTs ICC=0.70. CONCLUSIONS: Correlations were high for all-raters. SPTs were as reliable as PTs in inter-rater comparisons. PTs exhibited higher intra-rater reliability compared to SPTs. These results substantiate the reliability of a standardized testing instrument to conduct dance technique assessment. Validity of this instrument was demonstrated in a previous study which found dancers with better technique were less likely to sustain injury. The ability to identify technique deficits can guide preventative programs that may reduce injury risk. LEVEL OF EVIDENCE: Level III.

Disciplines

Dance | Dance Movement Therapy | Physical Therapy

Language

English

Repository Citation

Bronner, S., Lassey, I., Lesar, J., Shaver, Z., Turner, C. (2020). Intra- and Inter-Rater Reliability of a Ballet-Based Dance Technique Screening Instrument. Medical Problems of Performing Artists, 35(1), 28-34.
http://dx.doi.org/10.21091/mppa.2020.1004