The Montana Center for Work Physiology and Exercise Metabolism (Montana WPEM) presented a human clinical study recently at the Annual Meeting of the American College of Sports Medicine, showing that wildland firefighters who consumed a yeast-based supplement, Wellmune WGP®, had far fewer – 23 percent – upper respiratory tract infections, compared to a similar group of firefighters taking a placebo.
"The results of the firefighters study show a strong statistical trend that subjects who used Wellmune WGP had better physical health – 23 percent fewer upper respiratory tract infections such as, fever, headaches, weakness, coughing, sneezing and stuffy noses,” Ruby said “The results are consistent with previous clinical research involving marathoners, individuals with high stress lifestyles and the general population.”
In a single-blind, random, cross-over design, 54 wildland firefighters were given Wellmune WGP or placebo for 14 days, followed by a three-day washout period and another 14-day treatment period. During the course of treatments, subjects kept daily health logs recording cold and flu symptoms and overall feelings of well-being.
If subjects recorded any cold symptom (runny or stuffy nose, sore throat, coughing, sneezing, colored discharge) or flu symptom (fever, headache, general aches and pains, fatigue and weakness, chest discomfort, cough) for two consecutive days, they were classified with an upper respiratory tract infection.
There was a strong statistical trend favoring the use of Wellmune WGP for the prevention of upper respiratory tract infections. Forty-eight percent of the firefighters experienced an upper respiratory tract infection while taking the placebo, but only 37 percent had an upper respiratory tract infection while taking Wellmune WGP. Additionally, there was strong statistical significance in the wildland firefighter’s perceived health.
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