2.2.2. Habitual Coffee Intake Study
A total of 134 Russian healthy (non-smokers), physically active (>3 training sessions per week) subjects (45 females, age 28.4 (7.1) years, height 168.0 (5.9) cm, weight 59.5 (6.1) kg; 89 males, age 31.4 (8.6) years, height 179.8 (6.2) cm, weight 80.2 (10.3) kg) participated in this study.