Special Endurace and General Endurance (aeribic etc) are not the same thing. The is, of course a strong need for general endurnce but no role for Special Endurance- which would be a maximal continuous burst for 15 sec or more, not continuous action with short bursts intersperced as in tennis. The significance of this is that general fitness and pure speed coexist very nicely together while Speed and SE compete against each other for the same limited CNS resources.