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The Effect of a Sub-symptom Threshold Aerobic Exercise Program on Recovery in Concussed Athletes

The purpose of this randomized controlled trial is to examine whether systematic sub-threshold exercise is effective in improving recovery time in athletes after sport related concussion (SRC) compared to those who participate in a placebo/stretching protocol. subjects will be randomized into either an Exercise group or a Placebo/stretching group. subjects in the Exercise group will participate in an individualized exercise program supervised by their athletic trainer while the Placebo/stretching group will engage in a standardized stretching routine supervised by their athletic trainer throughout the duration of their recovery. Hypothesis 1: subjects in the aerobic Exercise group will require fewer days to recover from SRC than those who follow a placebo/stretching protocol. Hypothesis 2: heart rate threshold (HRt) achieved on the graded treadmill test will be associated with days to recovery (i.e., the lower the HRt, the longer the time to recovery). Hypothesis 3: Vestibular Ocular Motor Screen (VOMS) performance will be indicative of time to clinical recovery from concussion as evidenced by a strong correlation between VOMS score and days to clinical recovery. Hypothesis 4: Sub-threshold aerobic exercise will facilitate improvement in VOMS post-concussion. Hypothesis 5: subjects in the aerobic exercise group will demonstrate greater dynamic stability as evidenced by greater reach in each of the 3 primary directions (anterior, posterior medial and posterior lateral) for their right and left lower extremity.

Start: February 2019