Acute Effect of High Intensity Interval Exercise in Patients With Allergic Rhinitis

Twelve patients with allergic rhinitis aged between 19 and 31 years who had a positive skin prick test to house dust mite (D. pteronyssinus). The experiment was a crossover design in which each participant was given two types of high-intensity interval training exercise (HIT): HIT 1:1 (high intensity for 1 minute at 85-90% of maximum heart rate, then alternating with low intensity 50-55% of maximum heart rate for 1 minute) and HIT 1:2 (high intensity for 1 minute at 85-90% of maximum heart rate, then alternating with low intensity 50-55% of maximum heart rate for 2 minutes). Rhinitis symptoms, nasal blood flow, peak nasal inspiratory flow, pulmonary functions, respiratory muscle strength, and fractional exhaled nitric oxide were measured before and immediately, 15 minutes, 30 minutes, 45 minutes, and 60 minutes after exercise for each exercise program.