I never change gears when I’m sprinting. Normally when I go in a sprint, the speed is high and I’m in some of the bigger gears. Then stand up, push the pedals like there is no tomorrow.. Not thinking about another gear
I would not classify myself as a sprint either. My peak power at the moment is nothing crazy, but I did just managed to go 1000W for 29 sec (my goal this year is to reach 30 sec - 1 sec off..).
Yeah I don’t ever really fancy changing gear when sprinting. I try to do it against varying resistances though, standing start at a traffic lights etc too.
One of the exercises that really help me gain power was “starters”.
Go down to around 10 km/h, pick a medium gear (not to easy to spin and no where near hard) and then go all out for 8-10 secs. Until you spun out of the gear.
Do this every 3’ish minutes.
Seems stupid when you do them cause it does not feel hard, but they work wonders.