Effects of Protein Hydrolysates on Physical Performance and Immunity in Male Players

Abstract

Aim: To investigate the effects of protein hydrolysates on Physical performance and immunity in male players aged 18-21 years.
Methods: Blood samples were drawn from 2 groups of athletes (10 subjects each). The first group ingested protein hydrolysates 0.4 g/k for 15 days, the second one ingested placebo for 15 days. All participants were subjected to Copper test as a field test for V02 max determination, according to standardized protocol of Burke (1996). The other parameters determined were, Leucocytes, Neutrophils, CD 45+ (lymphocytes) D14+ (monocytes), together with free testosterone, cortisol and insulin, using coulter counter, flow cytometer and Elisa techniques.
Results: Protein hydrolysates revealed an increased cellular parameters WBCS , CD45+ , CD14+), together with elevated free testosterone and insulin concentrations with lower cortisol. VO2 max increased following protein hydrolysates administration.
Conclusion: In response to protein hydrolysates ingestions some immunological variables are enhanced together with higher anabolic hormones and lower cortisol concentration, this might stimulate physical performance.