Preventing Exercise-Associated Collapse Using Online Runner Education: A Randomized, Controlled Trial.

Objective: To determine whether online exercise-associated collapse (EAC) prevention education decreases medical tent EAC visits among first-time marathoners.

Design: A prospective controlled study, with age- and sex-stratified randomization, evaluated rates of medical tent diagnosed EAC among runners randomized to the intervention group and intervention participants, compared with a control group.

Setting: Grandma's Marathon Medical Tent in Duluth, MN, June 2016.

Unilateral cervical nerve injuries: brachial plexopathies.

Brachial plexus injuries are frequently encountered in sports. Classically, the symptoms include transient burning, pain, and occasionally weakness of an isolated upper extremity resulting from a peripheral nerve injury of varying degrees. Persistent symptoms or recurrent injuries may necessitate imaging such as electromyography.