Donald P. Tashkin, MD, Professor of Pulmonary Care at the University of California, Los Angeles, stated in a 1975 article titled "Effects of Smoked Marijuana in Experimentally Induced Asthma" in the American Journal of Respiratory and Critical Care Medicine:

“After exercise induced bronchospasm, [exercise-induced asthma] placebo marijuana and saline were followed by gradual recovery during 30 to 60 min, whereas 2.0 per cent marijuana… caused an immediate reversal of exercise-induced asthma and hyperinflation.”