Table 2A.
Functional Movement Screen and Y Balance Test Performance Classified by Injury History
| Measure |
Injury History |
|||||||
| Ankle |
Knee |
Hip |
Trunk |
Shoulderb |
Elbowb |
Wristb |
Handb |
|
| Functional Movement Screen/Y Balance Test, No. of screened athletes with previous injuriesa | 90/100 | 59/64 | 18/18 | 32/35 | 29/NA | 7/NA | 25/NA | 12/NA |
| Functional Movement Screen composite score | ||||||||
| Previous injury, mean ± SD | 14.2 ± 2.4 | 13.9 ± 2.3 | 12.7 ± 3.1 | 14.1 ± 2.4 | 13.5 ± 2.6 | 12.1 ± 2.8 | 14.1 ± 2.2 | 12.3 ± 2.9 |
| No previous injury, mean ± SD | 14.2 ± 2.5 | 14.4 ± 2.5 | 14.4 ± 2.3 | 14.2 ± 2.4 | 14.3 ± 2.4 | 14.3 ± 2.4 | 14.2 ± 2.5 | 14.3 ± 2.3 |
| P Value | .88 | .20 | .005c | .74 | .10 | .02c | .80 | .006c |
| t Value | −0.156 | −1.292 | −2.880 | −0.0339 | −1.655 | −2.309 | −0.253 | −2.806 |
| 95% Confidence interval of difference | −0.798, 0.681 | −1.277, 0.267 | −2.880, −0.537 | −1.106, 0.782 | −1.790, 0.157 | −3.968, −0.310 | −1.176, 0.908 | −3.411, −0.594 |
| Y Balance Test composite score | ||||||||
| Previous injury, mean ± SD, % | 101 ± 8 | 101 ± 7 | 100 ± 10 | 102 ± 10 | NA | NA | NA | NA |
| No previous injury, mean ± SD, % | 101 ± 8 | 101 ± 8 | 101 ± 8 | 101 ± 7 | NA | NA | NA | NA |
| P Value | .68 | .49 | .53 | .37 | ||||
| t Value | 0.416 | 0.695 | −0.635 | 0.902 | ||||
| 95% Confidence interval of difference | −0.018, 0.027 | −0.015, 0.032 | −0.051, 0.026 | −0.018, 0.042 | ||||
| Anterior reach asymmetry during the Y Balance Test | ||||||||
| Previous injury, mean ± SD, cm | 4.5 ± 8.9 | 5.1 ± 11.6 | 3.1 ± 2.3 | 6.3 ± 14.3 | NA | NA | NA | NA |
| No previous injury, mean ± SD, cm | 4.2 ± 8.5 | 4.0 ± 6.9 | 4.5 ± 9.1 | 3.9 ± 6.9 | NA | NA | NA | NA |
| P Value | .78 | .40 | .51 | .34 | ||||
| t Value | 0.274 | 0.841 | −0.616 | 0.976 | ||||
| 95% Confidence interval of difference | −2.162, 2.860 | −1.512, 3.777 | −5.701, 2.852 | −2.593, 7.421 | ||||
| Posteromedial reach asymmetry during the Y Balance Test | ||||||||
| Previous injury, mean ± SD, cm | 4.4 ± 9.6 | 3.1 ± 2.6 | 4.3 ± 2.9 | 5.8 ± 15.6 | NA | NA | NA | NA |
| No previous injury, mean ± SD, cm | 3.5 ± 3.2 | 4.4 ± 8.7 | 3.9 ± 7.6 | 3.5 ± 3.2 | NA | NA | NA | NA |
| P Value | .39 | .24 | .83 | .40 | ||||
| t Value | 0.857 | −1.171 | 0.211 | 0.864 | ||||
| 95% Confidence interval of difference | −1.181, 2.994 | −3.059, 0.895 | −3.185, 3.947 | −3.095, 7.675 | ||||
| Posterolateral reach asymmetry during the Y Balance Test | ||||||||
| Previous injury, mean ± SD, cm | 3.6 ± 2.8 | 3.9 ± 3.1 | 3.9 ± 3.9 | 3.5 ± 2.7 | NA | NA | NA | NA |
| No previous injury, mean ± SD, cm | 3.7 ± 2.7 | 3.5 ± 2.6 | 3.6 ± 2.6 | 3.7 ± 2.8 | NA | NA | NA | NA |
| P Value | .91 | .40 | .78 | .74 | ||||
| t Value | −0.116 | 0.851 | 0.290 | −0.335 | ||||
| 95% Confidence interval of difference | −0.842, 0.749 | −0.514, 1.287 | −1.695, 2.240 | −1.198, 0.850 | ||||
Abbreviation: NA, not analyzed.
a
Functional Movement Screen (Functional Movement Systems, Inc, Chatham, VA); Y Balance Test (Move2Perform, Evansville, IN).
b
Upper extremity injuries were not assessed for differences with performance on the Y Balance Test composite score or anterior, posteromedial, or posterolateral reach asymmetry during the Y Balance Test because this study focused on the lower quarter Y Balance Test.
c
Indicates difference.