Alleviating mechanical constraints to ventilation with heliox improves exercise endurance in adult survivors of very preterm birth Joseph W Duke1, Amy M Zidron2, Igor M Gladstone3, Andrew T Lovering4 1 Department of Biological Sciences, Northern Arizona University, Flagstaff, Arizona, USA 2 Department of Pediatrics, Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, USA 3 Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA 4 Department of...