Great physical loads and their intensity impose strict requirements on sportsmen’s nutrition. It must be highly efficient, well balanced and meet human body’s demands. Therefore, nutritional requirements of an athlete involve highly efficient natural products and balanced concentrates of bioactive substances. These molecules improve the response of the human body to unfavorable external stimuli by enhancing physical capacity, stimulating the immune system and modifying hormonal action.
It is already known that the Greek and Cuban Olympic teams consume Spirulina daily during their training and before competition. Dietary advantages of Spirulina supplementation have been proved experimentally with young sportsmen volunteers. These results have shown that consumption of Spirulina protects the skeletal muscle of athletes from oxidative damages, which are induced mainly from the production of free radicals during exercise, while it postpones the time of exhaustion during exercise, promotes the recovery from sport fatigue and improves athlete’s sports ability. In this respect, positive changes in blood morphological and biochemical indices were observed.
Moreover, investigations carried out on endurance-training sportsmen showed that a 14-d administration of Spirulina exerted a positive effect on blood morphological composition indices and its biochemical changes and confirm the positive effect of Spirulina food supplement on the quantitative parameters of immune system. In another study with moderately trained human males, it has been shown that Spirulina supplementation induced a significant increase in exercise performance, fat oxidation, and glutathione concentration and attenuated the exercise-induced increase in lipid peroxidation.