The Physiological Impact of Thoracic Load Carriage on Cardiorespiratory Responses in Females at Normal and Simulated Altitude

Investigators: Stephanie Kurti-Luden, PhD, Nicholas Luden, PhD, Michael Saunders, PhD, Dan Baur, PhD, Sydney Koppinger, BS, and Beverley Buchanan, BS

Affiliations: James Madison University and the Virginia Military Institute

Carrying heavy backpacks is a requirement for many professionals (i.e. search and rescue, wildland firefighters, and military personnel), especially in high altitude environments. Research in males has shown that this induces a shallower breathing pattern and can cause fatigue to muscles involved in breathing. Differences in female anatomy and physiology may make females more likely to exhibit respiratory muscle fatigue and have impaired performance compared to males. This research was designed to better understand female physiology and aid in refining recommendations for military personnel to optimize performance and safety.