Due to differences in modalities , time course , study design and outcomes , it is not possible to define a single ‘ physiological time window ’ for SRC recovery .
Multiple studies suggest physiological dysfunction may outlast current clinical measures of recovery , supporting a buffer zone of gradually increasing activity before full contact risk .
Aim or objective The aim of this study is to consoli date studies of physiological measures following sport-related concussion ( SRC ) to determine if a time course of postinjury altered neurobiology can be outlined .
This biological time course was considered with respect to clinical ly relevant outcomes such as vulnerability to repeat injury and safe timing of return to physical contact risk .
Professional Rugby Union players have a 60% greater risk of time loss injury after concussion: a 2-season prospective study of clinical outcomes
Aim To investigate incidence of concussion , clinical outcomes and subsequent injury risk following concussion . Methods In a two-season ( 2012/2013 , 2013/2014 ) prospect i ve cohort study , incidence of diagnosed match concussions ( injuries/1000 h ) , median time interval to subsequent injury of any type ( survival time ) and time spent at each stage of the graduated return to play pathway were determined in 810 professional Rugby Union players ( 1176 player seasons ) . Results Match concussion incidence was 8.9/1000 h with over 50 % occurring in the tackle . Subsequent incidence of any injury for players who returned to play in the same season following a diagnosed concussion ( 122/1000 h , 95 % CI 106 to 141 ) was 60 % higher ( IRR 1.6 , 95 % CI 1.4 to 1.8 ) than for those who did not sustain a concussion ( 76/1000 h , 95 % CI 72 to 80 ) . Median time to next injury following return to play was shorter following concussion ( 53 days , 95 % CI 41 to 64 ) than following non-concussive injuries ( 114 days , 95 % CI 85 to 143 ) . 38 % of players reported recurrence of symptoms or failed to match their baseline neurocognitive test during the graduated return to play protocol . Summary and conclusions Players who returned to play in the same season after a diagnosed concussion had a 60 % greater risk of time-loss injury than players without concussion . A substantial proportion of players reported recurrence of symptoms or failed to match baseline neurocognitive test scores during graduated return to play . These data pave the way for trials of more conservative and comprehensive graduated return to play protocol s , with a greater focus on active rehabilitation
Due to differences in modalities , time course , study design and outcomes , it is not possible to define a single ‘ physiological time window ’ for SRC recovery .
Multiple studies suggest physiological dysfunction may outlast current clinical measures of recovery , supporting a buffer zone of gradually increasing activity before full contact risk .
Aim or objective The aim of this study is to consoli date studies of physiological measures following sport-related concussion ( SRC ) to determine if a time course of postinjury altered neurobiology can be outlined .
This biological time course was considered with respect to clinical ly relevant outcomes such as vulnerability to repeat injury and safe timing of return to physical contact risk .