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time to fully replenish PC? ? PC supply depleted after about 30 seconds ? 189。 recovered in 2030 seconds ? Last 189。 could take another 20 minutes ? Takahashi et al. (1995): following isolated quad exercises PC stores replenished ranged from 5590 seconds ? There may be a greater reliance on glycolytic than the 10% as has been previously reported Cardiovascular Fitness for Football? ? VO2 max ? College football players have similar values as agematched controls ? Would adding a cardiovascular ponent help players? ? Majority of injuries occur in the 2nd and 4th quarter ? Endurance training has been shown to allow athletes the ↑ ability to replenish intramuscular PC following a severe quadriceps activity (Takahashi et al. 1995) ? Prevent injuries ? Reduce heat illnesses in summer training ? Healthier life after football Anaerobic Conditioning Exercises ? These are intended to improve “speedendurance” ? Interval Sprints ? Work/Rest ratio can be manipulated ? Can be performed on a track or playing surface ? Standing start or Flying start ? Creative: repetition relays ? Effect on Anaerobic Capacity ? Fartlek ? Alternating sprint with jogging used as a rest ? Creative: “indian” runs ?