ASL 1 Adolescent 1 Adult 1 Article 1 Athletic Injuries 1 Brain Concussion 1 Cerebrovascular Circulation 1 DTI 1 Diffusion Tensor Imaging 1 Female 1 Humans 1 Longitudinal Studies 1 Magnetic Resonance Imaging 1 Male 1 Recovery of Function 1 Sex Characteristics 1 White Matter 1 Young Adult 1 adolescent 1 adult 1 algorithm 1 analytic method 1 arterial spin labeling 1 body movement 1 brain blood flow 1 brain circulation 1 brain concussion 1 brain injury 1 brain region 1 cohort analysis