What empirical evidence is there that PST enhances sport performance?

There is a growing body of research that suggests that Performance State Training (PST) can have a positive effect on sport performance. Studies have found that PST can improve physical performance, such as increasing strength, power, and speed, as well as improving mental performance, such as increasing focus, concentration, and motivation. Additionally, PST has been found to reduce anxiety and improve self-confidence, which can lead to improved performance.