Late response in exercise-induced asthma

Summary Eight subjects induced bronchospasm by free‐range running. Four of these demonstrated a hue response at 5‐6 hr after exercise. When compared lo the other group of four subjects, who also developed an early response but no late response, the difference in FEV1 at 5‐6 hr was highly statistically significant. Although the phenomenon is not universally manifest it should no longer be held that there is no late response in exercise‐induced asthma.