Inclusion Criteria:  Age between 13-18 years. Participate in a "land-based" organized sport in the last 1 year with intent on continued participation in the next year. Perform sport-related activities such as running/sprinting, cutting maneuvers, and jumping. Tolerate adhesive markers placed on skin and clothing. Willing and interested in participating.  Exclusion Criteria:  Neuromuscular disorders such as cerebral palsy, muscular dystrophy, myotonic dystrophy, spinal muscular atrophy, peripheral neuropathy, or other generalized muscle and/or nerve issues. Currently undergoing treatment or receiving medication that affects movement. Requires ankle/knee bracing to safely perform running, sprinting, jumping activities. History of orthopedic surgery to lower limbs. In last 6 months: receiving/seeking medical treatment for injury. Difficulty performing sport-related activities. Pain that has inhibited participation in sports/daily activities in the last 3 months.