How reliable are Functional Movement Screening scores?
The following review concluded that moderate levels of both inter-rater and intra-rater reliability can be achieved when utilising the Functional Movement Screen (FMS) as a means to identify intrinsic risk factors for injury aetioloigy related to movement quality.
The FMS is a movement screening test battery that is gaining widespread usage internationally with the purpose of identifying the presence of risk factors that may predispose a person to injury, and those who require further more detailed assessment. The aim of the current systematic review was to critically appraise and summarise research investigating inter-rater and intra-rater reliability of FMS scores.
12 studies were appraised, with an overall ‘moderate’ level of evidence in favour of ‘acceptable’ inter-rater and intra-rater reliability for composite scores derived from live screening. Interestingly, such findings were not consistent when composite scores were derived from video recordings.
This review suggests that real-time screening provides ‘acceptable’ levels of both inter-rater and intra-rater reliability in deriving composite scores for the FMS. However, it was noted by the authors that there the quality of several studies was impacted by poor study reporting, particularly in relation to rater blinding.