Movement Competency Screen: Rethinking the Rating.
Justine Benoit-Piau, Mélanie Morin, Christine Guptill and 2 others
PMID 36518829WHAT IT FOUND
Scoring dancers' movement with five load levels rather than three groups showed a stronger link to core and hip strength.
The five-level system explained 24% of the score variance, while the three-level system explained only 13.3%, suggesting the five-level approach captures more detail.
Key findings
01The five-level scoring system showed a moderate internal consistency score of 0.548, while the three-level system showed a poor score of 0.494.
02A multiple regression model using the five-level system explained 24% of the variance in movement competency scores, compared to 13.3% for the three-level system.
03The five-level system was significantly associated with transversus abdominis activation and strength in hip extensors, abductors, adductors, and external rotators.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included a mix of ballet and contemporary dancers, as well as professional and pre-professional levels, which created heterogeneity in the sample that could not be analyzed in subgroups due to sample size. Neither scoring system achieved the generally accepted internal consistency threshold of 0.7, meaning the reliability of the test items remains moderate to poor regardless of the scoring method used.
Declared interests
The authors report no conflicts of interest. The study was funded by a partnership between the Institut de recherche Robert-Sauvé en santé et sécurité du travail (IRSST) and REPAR.
The easy way to misread this
Do not assume the five-level system is a validated replacement for the three-level system. While it showed better associations with physical impairments, its internal consistency score of 0.548 is still considered moderate and does not meet the standard threshold of 0.7 for high reliability.