Table 1. CoM mechanics during a CMJ. Variables CMJ20 CMJMax UG TG UG TG Jump height (cm)*,**,† , † †  36.1 ± 2.7† †  39.5 ± 5.6† †  45.2 ± 4.1** 53.3 ± 3.1 Peak GRF (N/kg) 2.4 ± 0.5 2.5 ± 0.2 2.3 ± 0.6 2.4 ± 0.2 Peak mechanical power (Watt/kg)†  41.2 ± 8.5 43.3 ± 5.0 45.2 ± 7.7 50.6 ± 4.5 Negative work (J/kg)†  -3.0 ± 0.3† †  -2.7 ± 0.6† †  -3.6 ± 0.9 -4.2 ± 0.86 Positive work (J/kg)†  6.6 ± 1.5 5.4 ± 1.1 7.8 ± 2.2 8.2 ± 1.7 Significantly different at p < 0.05. *TG vs UG regardless of tasks. † CMJ20 vs CMJMax regardless of groups. **TG vs UG in CMJ20 or CMJMax. † † TG or UG in CMJ20 vs CMJMax.