Figure 4. The forest plot demonstrates the effect of combined training versus regular training (top) and single-mode training (bottom) on athletes' repeated sprint ability fatigue index. COD: change of direction training; CON: regular training or regular training group; HIIT: high intensity interval training; PT: plyometric training; RT: resistance training: RST repeated sprint training; ST: sprint training; SGL: single mode training or single mode training group.