This study compared the uniformity of adaptations in cardiorespiratory fitness and bio-motor abilities in well-trained male soccer players who underwent short sprint interval training (sSIT) or small-sided games (SSG). Twenty-four participants were randomized into two groups: sSIT (3 sets of 10 × 4 s all-out sprints with 20 s recovery and 3 min rest between sets) and SSG (3 sets of 3 v 3 efforts with 3 min rest between sets). Before and after a 6-week training period, various physiological and performance measures were assessed. The results showed that sSIT induced more uniform changes in ventilatory thresholds (VT1 & VT2), stroke volume (SV), and peak power output (PPO) compared to SSG. Additionally, sSIT had lower coefficients of variation in mean group changes and fewer non-responders in VO2max, VT1, VT2, PPO, and average power output (APO) compared to SSG. The study concluded that sSIT facilitates more homogenous adaptations in cardiorespiratory fitness and anaerobic power across team members, making it a more effective intervention for improving athletic performance in soccer.This study compared the uniformity of adaptations in cardiorespiratory fitness and bio-motor abilities in well-trained male soccer players who underwent short sprint interval training (sSIT) or small-sided games (SSG). Twenty-four participants were randomized into two groups: sSIT (3 sets of 10 × 4 s all-out sprints with 20 s recovery and 3 min rest between sets) and SSG (3 sets of 3 v 3 efforts with 3 min rest between sets). Before and after a 6-week training period, various physiological and performance measures were assessed. The results showed that sSIT induced more uniform changes in ventilatory thresholds (VT1 & VT2), stroke volume (SV), and peak power output (PPO) compared to SSG. Additionally, sSIT had lower coefficients of variation in mean group changes and fewer non-responders in VO2max, VT1, VT2, PPO, and average power output (APO) compared to SSG. The study concluded that sSIT facilitates more homogenous adaptations in cardiorespiratory fitness and anaerobic power across team members, making it a more effective intervention for improving athletic performance in soccer.