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Training in ACSM Black Flag Heat Stress Conditions: How U.S. Marines Do It

Biery, John C. Jr.1; Blivin, Steve J.2; Pyne, Scott W.3

Current Sports Medicine Reports: May-June 2010 - Volume 9 - Issue 3 - p 148-154
doi: 10.1249/JSR.0b013e3181df102d
Training: Section Articles

Exertional heat injuries have gained public attention over the past several years, as have the means to prevent and treat them. One of the simplest preventive measures is to refrain from physical training and competition during times of increased environmental heat stress. Unfortunately, this often is not possible or desirable in certain populations. As a result of operational and training requirements, the U.S. Marine Corps and the U.S. Navy medical team have developed an effective exertional heat injury prevention strategy that relies upon education, leadership, and continuous hands-on observation. The fundamental aspects of this approach can be applied to other team sporting activities.

1Sports Medicine and Reconditioning Team, 3d Marine Logistics Group, Okinawa, Japan; 2Naval Hospital Camp Lejeune, North Carolina; 3U.S. Navy Sports Medicine Specialty Leader, Washington, D.C.

Address for correspondence: John C. Biery, Jr., DO, CAQSM, Director of Sports Medicine, Sports Medicine and Reconditioning Team (SMART) Center, 3d Marine Logistic Group, FMFPAC, Unit 38404, FPO, AP 96605-8404 (E-mail:

Note: The views expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of the Department of the Navy, Department of Defense, nor the U.S. Government.

© 2010 American College of Sports Medicine