Hi since i've made the post that i was stucking in dynamic at 100m, i've changed my training as u suggested, so i've reduced a lot the aerobic training now i go running 1 a week, but i've introduced 3 sessions of anaerobic work like push ups, abs, squat, things like that. Than i've started doing heavy hypercapnic work, so on my ciclette always cicling i do 20 second frc breathold, than 10 seconds recovery than again 20'' frc and so on for 30 minutes. Also i do some statics hypercapnic work so 3'20'' breathold, recovery time decreasing from 1'30'' by 15 second at time so 1'15'', 1', and so on. Than some stretching at the end. I'll restart working in pool in 14 days cuz atm it's closed. any suggestions are welcome for improuve my training.