Speed is the quickness of movement of limb, whether this be the legs of a runner or the arm of the shot putter.
Speed is influenced by the athlete's mobility, special strength, strength endurance and technique.
Energy system for speed Energy for absolute speed is supplied by the anaerobic alactic pathway. The technique of sprinting must be rehearsed at slow speeds and then transferred to runs at maximum speed. The whole process is not totally clear but the complex coordination and timing of the motor units and muscles most certainly must be rehearsed at high speeds to implant the correct patterns. Flexibility and a correct warm up will affect stride length and frequency. Stride length can be improved by developing muscular strength, power, strength endurance and running technique.