Humans are about 25% efficient, so feel free to multiply any number with 4 to get actual expended energy.
That doesn't change the calculus, obviously. I can easily sustain 150W for an hour on a bike, I can't lift 225kg half a metre against gravity 500 times (the equivalent).
(The idea here is that you try to back up lofty claims with some science numbers.)
Don't forget to add your body weight. Lifting ~110kg 6 feet (4 times 1/2 meter) 25 times in about 3 minutes ~= 6 mintues @ 150W on a bike. Plus whatever lifting your body weight from a squat adds up to. https://en.wikipedia.org/wiki/Clean_and_jerk
Start playing with the numbers and Weight lifters can get into crazy high energy diets.
PS: Works out to around 110kg / ~.82 ~= 135kg max lift. At 230 lb the record is 246 kg so it's not that unreasonable a goal for a fairly large guy.
Serious bodybuilders have to eat like it's their job. At a certain point, regular food fails to provide enough calories so they have to reach for liquid diets.
if you want to maximize sustained burn you need to use more muscle groups. Being limited to how much oxegen you can supply to your legs is a major limitation.
Rowing is a good example of this, but as 110kg is easily twice the power output of biking you can drop down to 50% max lift range and be limited by oxigen not mussel damage.
Or put another way top weightlifter need to eat significantly more than top bikers who top out at around 8k cal per day.
That doesn't change the calculus, obviously. I can easily sustain 150W for an hour on a bike, I can't lift 225kg half a metre against gravity 500 times (the equivalent).
(The idea here is that you try to back up lofty claims with some science numbers.)