TY - JOUR
T1 - The functional movement test 9+ is a poor screening test for lower extremity injuries in professional male football players: a 2-year prospective cohort study
AU - Bakken, Arnhild
AU - Targett, Stephen
AU - Bere, Tone
AU - Eirale, Cristiano
AU - Farooq, Abdulaziz
AU - Tol, Johannes L.
AU - Whiteley, Rod
AU - Khan, Karim M.
AU - Bahr, Roald
PY - 2018
Y1 - 2018
N2 - The 9+ screening battery test consists of 11 tests to assess limitations in functional movement. To examine the association of the 9+ with lower extremity injuries and to identify a cut-off point to predict injury risk. Professional male football players in Qatar from 14 teams completed the 9+ at the beginning of the 2013/2014 and 2014/2015 seasons. Time-loss injuries and exposure in training and matches were registered prospectively by club medical staff during these seasons. Univariate and multivariate Cox regression analyses were used to calculate HR and 95% CI. Receiver operating characteristic (ROC) curves were calculated to determine sensitivity and specificity and identify the optimal cut-off point for risk assessment. 362 players completed the 9+ and had injury and exposure registration. There were 526 injuries among 203 players (56.1%) during the two seasons; injuries to the thigh were the most frequent. There was no association between 9+ total score and the risk of lower extremity injuries (HR 1.02, 95% CI 0.99 to 1.05, p=0.13), even after adjusting for other risk factors in a multivariate analysis (HR 1.01, 95% CI 0.98 to 1.04, p=0.37). ROC curve analysis revealed an area under the curve of 0.48, and there was no cut-off point that distinguished injured from non-injured players. The 9+ was not associated with lower extremity injury, and it was no better than chance for distinguishing between injured and uninjured players. Therefore, the 9+ test cannot be recommended as an injury prediction tool in this population
AB - The 9+ screening battery test consists of 11 tests to assess limitations in functional movement. To examine the association of the 9+ with lower extremity injuries and to identify a cut-off point to predict injury risk. Professional male football players in Qatar from 14 teams completed the 9+ at the beginning of the 2013/2014 and 2014/2015 seasons. Time-loss injuries and exposure in training and matches were registered prospectively by club medical staff during these seasons. Univariate and multivariate Cox regression analyses were used to calculate HR and 95% CI. Receiver operating characteristic (ROC) curves were calculated to determine sensitivity and specificity and identify the optimal cut-off point for risk assessment. 362 players completed the 9+ and had injury and exposure registration. There were 526 injuries among 203 players (56.1%) during the two seasons; injuries to the thigh were the most frequent. There was no association between 9+ total score and the risk of lower extremity injuries (HR 1.02, 95% CI 0.99 to 1.05, p=0.13), even after adjusting for other risk factors in a multivariate analysis (HR 1.01, 95% CI 0.98 to 1.04, p=0.37). ROC curve analysis revealed an area under the curve of 0.48, and there was no cut-off point that distinguished injured from non-injured players. The 9+ was not associated with lower extremity injury, and it was no better than chance for distinguishing between injured and uninjured players. Therefore, the 9+ test cannot be recommended as an injury prediction tool in this population
U2 - https://doi.org/10.1136/bjsports-2016-097307
DO - https://doi.org/10.1136/bjsports-2016-097307
M3 - Article
C2 - 28512188
SN - 0306-3674
VL - 52
SP - 1047
EP - 1053
JO - British Journal of Sports Medicine
JF - British Journal of Sports Medicine
IS - 16
ER -