Energy and Endurance

Energy and Endurance O2+Pi=AMP+O2+Pi+Pi=ADP+O2+Pi+Pi+Pi=ATP ATP Utilization and Metabolism… 700 mg ATP in cardiac tissue At HR of 60 we utilize ~ 70 mg/second 700 mg lasts 10 seconds ~ about 10 heartbeats 86,000 beats/day = 6 million mg ATP utilized Myocardial ATP turns over ~ 10,000 times/day! “Heart” “Just in Time” Production and Transport