Race Walkers' breathing under the microscope: altitude study reveals hidden lung strain

This study looked at whether training at high altitudes causes or worsens exercise-induced bronchoconstriction (EIB) in 64 elite race walkers. Participants completed lung function tests, treadmill challenges, and blood draws at both low and high altitudes over 2-4 months. The goal was to diagnose EIB and see how it affects athletic performance, helping coaches tailor training and treatment.