3 Step-Up Variations for Speed & Power Step-ups mimic the sprinting position, making them a top-tier exercise for building strength and power in that movement pattern. Here are 3 simple variations I like to use. One more option: use a lower box and load it heavy with a barbell. And if you want to add the classic Usain Bolt knee drive—go for it. Personally, I like to focus on the push-off phase only. Want a full speed program? DM me “30” and I’ll send you the invite! | Scientificallyfaster