Continuous Protein Supplementation Reduces Acute Exercise-Induced Stress Markers in Athletes Performing Marathon

The aim of this study was to determine the changes in endurance performance and metabolic, hormonal, inflammatory markers induced by stress (marathon race) a combined strategy training dietary protein supplementation. designed as randomised controlled trial consisting regular without with daily intake soy protein-based supplement over three-month period 2 × 15 (10 males 5 females per group) endurance-trained adults. Body composition (body mass, BMI, fat mass) determined, physical fitness measured treadmill ergometry at baseline after 3 months intervention; exercise-induced (CK, myoglobin, interleukin-6, cortisol, leukocytes) were also determined before marathon competition; eating behaviour documented intervention three-day diet diary. Although no significant influence on observed, supplementation regime reduced muscle response. Furthermore, ≥20% total energy led lower-level reaction race. In conclusion, supplementary may reactions changing cellular metabolism pathways.