Fatigue on over threshold efforts

yehh I agree - 375w at 125% FTP is hard for 5mins but I can do it, but I could probable do 350w…
… in fact the race becomes more equally if there aren’t hard short sprints since I can grind out high threshold output for a long time. Its the 1min short sharp efforts that really kill me.

What specific workouts would you recommend for shorter power gains.