“…These laboratory testing protocols have been designed with the intent to differentiate the type of concussion injury (i.e., physiologic, vestibulo-occular, cervicogenic;Ellis et al, 2014Ellis et al, , 2015Leddy et al, 2016a), and to discern the physiological mechanisms (cerebral autoregulation, cerebrovascular reactivity, neurovascular coupling; Ellis et al, 2015Ellis et al, , 2016Ellis et al, , 2018Neary et al, 2019). This research has added to our understanding of the pathophysiological changes that occur following a concussion (Len et al, 2011(Len et al, , 2013Giza and Hovda, 2014;Bishop and Neary, 2017;Bishop et al, 2017b;Worts et al, 2019), and has also provided a greater understanding of how we can apply exercise safely as a treatment strategy. Thus, it appears that evidence supports the therapeutic benefits of mildto-moderate intensity physical exercise (Kozlowski, 2014;Hinds et al, 2016;Leddy et al, 2016aLeddy et al, ,b, 2018 and that prolonged rest may be detrimental during acute recovery post-concussion Thomas et al, 2015;Buckley et al, 2016;Wells et al, 2016).…”