Peak Performance Program Outline The 1500 metre athletics is generally run at moderate to high intensity. Throughout the race the predominant energy system that we use is the aerobic system, which used at a low intensity has no limits. However short bursts of energy are required at times such as the sprint to the finish line, this is when the lactic acid system kicks in. The average duration of the 1500m for a female school student …showed first 75 words of 254 total…

…showed last 75 words of 254 total…Causes of fatigue during the 1500m include; inadequate carbohydrate supplies resulting in the muscle glycogen stores becoming depleted and athlete having to rely on the secondary fuel fat, causing the athlete to feel lethargic which results in a fall in performance. After completing the 1500m the rate of recovery depends on the individual but can take up to 2 hours. The time to replenish glycogen stores used by the aerobic system can take up to 48 hours.