The open-window hypothesis maintains that an inordinate increase in training or actual competition exposes even the highly conditioned person to "nonnormal" stress that depresses NK cell function.

Question

Quizplus · Accepted Answer

The open-window hypothesis suggests that intense physical activity can temporarily suppress the immune system, including natural killer (NK) cell function, increasing susceptibility to infections.

The Open-Window Hypothesis Maintains That an Inordinate Increase in Training