Q.Differentiate between acceleration runs and pace races as methods of developing speed.

Acceleration Runs train the explosive start and build-up to maximum speed: a sprinter reaches top speed over about 50-60 metres and can hold it for only about 20 metres, so 6-12 repetitions are run with full recovery between each. Pace Runs are used for races of 800 m and above and train the ability to hold a fast, controlled pace over a training distance about 10-20% more than the actual race distance -- also with full recovery between repetitions, the same recovery principle as acceleration runs, not a shorter one. …

Acceleration Runs

Acceleration Runs train the start and the drive to maximum speed. A sprinter typically needs about 50-60 metres to reach maximum speed from a standing or slow start, and even a well-trained athlete can hold that maximum speed for only about 20 metres before it begins to fall away. The athlete performs 6 to 12 repetitions, with the rest interval long enough for COMPLETE recovery between each run, so that every repetition can be run at full effort.

Pace Runs

Pace Runs are used for races of 800 metres and above, where an athlete cannot sprint the entire distance at full speed and must instead learn to run at a controlled, maximum steady speed -- an athlete can typically hold full speed for about 300 metres, and in longer races must consciously conserve energy by controlling pace. The training distance for a pace run is fixed at about 10-20% MORE than the actual racing distance, run at the athlete's maximum steady speed. As with acceleration runs, the number of repetitions is fixed to the athlete's fitness level, and COMPLETE recovery is taken between repetitions -- the same full-recovery principle as acceleration runs, not a shorter one.

The Difference …