It is extensively acknowledged that insufficient power (calorie) intake in periods of intense training can compromise the immune system and consequently enhance susceptibility to an infection. In a current single-blind, placebo-controlled study ( eight ), it was reported that four wk of oral supplementation, with a mix of vitamin C (500 mg/day) and vitamin E (400 IU/day), markedly attenuated the release of IL-6 from lively muscle and the plasma IL-6 and cortisol response to 3 h of dynamic two-legged, knee-extensor exercise at 50% of maximal power output in contrast with placebo.

Several studies point out that the incidence of symptoms of higher respiratory tract illness is elevated within the days following prolonged strenuous endurance events and it has been generally assumed that that is due to the momentary train-induced despair of immune perform (Gleeson,2006).

Lancaster GI, Khan Q, Drysdale PT, Wallace F, Jeukendrup AE, Drayson MT, Gleeson M. Effect of … Read More