Inclusion Criteria:  Male or Female Ages: 18 - 45 Height between 5'2" and 6'6" Foot size that corresponds to available walking boots Healthy individuals without current complaint of lower extremity pain, spine pain, open wounds or active infection Full active pain free range of motion of the bilateral upper and lower extremities and spine Able to hop without pain Able to perform a full squat without pain Able to walk up and down a flight of stairs at normal walking speed without using the hand rail Able to stand on one leg for at least 30 seconds Able to read and write in English and provide written informed consent  Exclusion Criteria:  Weight greater than 270 lbs BMI greater than 35 Maximum thigh circumference at top of the leg greater than 28" Prior medical or neuromusculoskeletal disorders that have limited their participation in work or exercise in the last 6 months Prior lower extremity injury proximal to the ankle requiring surgery or limiting function for greater than 6 weeks Prior back pain that recurs or has limited activities for greater than 6 weeks Diagnosed moderate or severe brain injury Diagnosis of a physical or psychological condition that would preclude testing (e.g. cardiac condition, clotting disorder, pulmonary condition) Uncorrected visual or hearing impairment(s) Require use of an assistive device Pregnancy - Per participant self-report. Due to the expected small number of pregnant individuals, and resulting inability to account for its effect on resulting outcomes, participants will be withdrawn from the study