A.M. Ran with Jeff, Daniel, and Mary Ann. Dropped off Daniel and Mary Ann around 6.5. Mary Ann ran less today because she wanted to run a race at UVU later. Jeff and I finished 10 in 1:17:56. We did explosions, and I also did a 0.3 post VPB tempo at 5:30 pace.
Jeff and I discussed the importance of maximum leg power in the ability to negative split. My theory. Suppose you have two runners one named Powerhouse and the other Aerobic Animal. The Powerhouse is so strong he can run the same pace as the Aerobic Animal applying only 70% of his maximum force while the Aerobic Animal has to apply 80% of his maximum force. Both run at the same VO2 at that pace. The Powerhouse cannot go faster aerobically because he cannot bring in more oxygen. The Aerobic Animal cannot go faster aerobically because of neuro-muscular issues.
My prediction is that during the first half of a long race (5 K or longer), the Powerhouse and the Aerobic Animal will run alongside with equal degree of comfort. Then the Powerhouse will gradually pull away in the second half. Why? The Aerobic Animal will get tired for running at 80% of his maximum force for neuro-muscular reasons, and would have to slow down. The Powerhouse was running only at 70%, he might not have any more oxygen, but he can keep the pace, and then even increase it in the last 2 minutes since he can afford to go into oxygen debt at that point, and his muscles can use that debt.
Ran 2 miles with Benjamin in 17:27 after finishing with Jeff.
P.M. 1.5 with Jenny in 13:07. Julia ran the first 1.5 with us in 9:09.