Hello all. I am having trouble understanding some data. We performed exhaustive runs on C57BL6 mice that were acclimated to running on a treadmill. We observe lower critical speed in group 1 compared to group 2, but higher finite distance capacity in group 1. As I understand it, critical speed is a measure of aerobic capacity, finite distance capacity is a measure of anaerobic capacity, suggesting that group 1 has limited respiration but greater stores of glycogen and phosphates in their skeletal muscle. We had previously found depletion of glycogen and ATP in heart tissue in group 1 mice. We also have data that suggests a depletion of creatine and p-creatine in group 1 hearts. We did not perform any measurements in skeletal muscle. Can someone please help me understand if I am overlooking something? Thank you.