Background: Age 57, 70.3 focus this year. I have spent 9 months doing LSD for all my running and have had a strong improvement. Built up to around 40 mpw. Took my 70.3 run from 2:09 to 1:52. I realize that is not fast by ST standards but for me 17 minutes is big.
Currently for the bike I am doing top down training. Working on boosting my FTP. My problem is that working at that intensity 3 days a week takes a toll on me that jeopardizes me hitting all my workouts in a week.
My question is can LSD training on the bike provide a similar boost in performance like it does on the run? If so what is the time per session required to drive the results. On the run I built up to 2.5 hours but generally did long run of 2:00 to 2:15. Do you need a lot more hours on the bike like 4-5 per saession or what? Anyone with experience on this topic would love to hear about it!
EDIT: Have computrainer so specific instructions regarding times and zones being solicited. Current FTP 240.