Cognitive sciences are grappling with the reliability paradox: measures that robustly produce within-group effects tend to have low test-retest reliability, rendering them unsuitable for studying ...

Conclusions The K-D has fair test-retest reliability. The combination of sensitivity and specificity with any increase in time is better than other currently used objective measures of concussion.

Background Upper limb muscular power output is a fundamental aspect across a number of explosive short duration sports such as boxing. Regular consistent production of high muscular power is a highly ...