A bronchospasm is a contraction in the airways that can make it hard to catch your breath. Certain health conditions, such as asthma, and environmental triggers, like chemicals or cold air, can ...

1 Yonsei Institute of Sports Science & Exercise Medicine, Wonju, Korea, South 2 Department of Physiology, Yonsei University Wonju College of Medicine, Wonju, Korea, South 3 Department of ...