Swartz EE, Armstrong CW, Rankin JM, Rogers B. A 3-dimensional analysis of face-mask removal tools in inducing helmet movement. J Athl Train. 2002;37:178–184.
In the Abstract, the “Results” and “Conclusions” sections should read as follows:
“Results: The AP allowed subjects to perform the face-mask removal task the fastest. Face-mask removal with the AP was significantly faster than with the PVC and TA and significantly faster with the TA than the PVC. No significant differences were noted among tools for combined movement or the individual planes of flexion-extension, rotation, or lateral flexion. When combining all tools, more movement was created in lateral flexion than in rotation. The AP had an efficiency score of 14; FME, 15; TA, 18; and PVC, 35.”
“Conclusions: The subjects performed the face-mask removal task in the least amount of time with the AP. Regardless of tool, more movement occurred in lateral flexion than in rotation. The AP and FME had nearly identical overall efficiency scores for movement and time.”