RecruitingDevice studyAssessing the Effects of Photobiomodulation on Clinical Recovery From Concussion in AdolescentsThe purpose of this study is to compare effects of Photobiomodulation therapy (PBMt) to standard of care in adolescent athletes at risk for delayed recovery from subacute sports concussion, to substantiate the impact of subacute PBMt over time on functional and structural connectivity of the brain using advanced MRI sequences and to correlate the psychological and behavioral outcomes to neuroimaging findings