I hope you break parallel. And for your information, a full ROM will always be better for power development regardless of what ROM you need the power in. As a cyclist I have a very, very small ROM when partaking in my sport and yet powersnatches are pretty much the best exercise I can do. Doing an ass to grass back squat will produce far more power than a parallel squat with 20% more weight
Great post and I totally agree.Totally agree with your point re: dogmatism. A lot of people read about something or come up with an idea and just stick to it flat out and argue it to be true whether they see the benefit in other peoples points of view or not.
"You MUST do full barbell squats and deads to get big/strong/lean/muscly" is a ridiculous statement as it can never be proven, but it's controversial/inflamatory enough to get people reading the blog, spread the link, start discussion and get people defending/argung against it.
A statement such as "If you aren't progressing maybe try squats and deads" is hard to argue against but doesn't stimulate much though or get page clicks.
Good luck proving such a broad statement...
A 100kg atg squat moving at 8 inches per second produces a force of 20.32 newtons
A 120kg parallel squat moving at 4 inches per second produces a force of 12.192 newtons
Lets say the parallel squat has a ROM of 12 inches, and the atg squat is 24 inches. That's 0.3048m for parallel and 0.6096 for atg
Time to complete the parallel lift is 3 seconds and 3 seconds for atg
Total power output for parallel squat: 4.064w
Total power output for atg squat: 6.773w
More accurate calculations could be made if you filmed the lift next to a meter stick but you're welcome!
These are hypotheticals and arbitrary numbers.
What about 100kg atg at 8" and 140 para at 6"/sec. Fact of the matter is you can generally squat a lot more weight with the latter, and safer mind you (particularly when it's not controlled - as you fatigue, if you're trying to do atg squats explosively at the very bottom where there is a slight rounding of the back.. you run the risk of problems). This is not to say there are no risks involved with para/just below para squatting. Your knees take a bit of a hit. Each to their own - stick with what works for you best, but definitely experiment!
A 100kg atg squat moving at 8 inches per second produces a force of 20.32 newtons
A 120kg parallel squat moving at 4 inches per second produces a force of 12.192 newtons
Lets say the parallel squat has a ROM of 12 inches, and the atg squat is 24 inches. That's 0.3048m for parallel and 0.6096 for atg
Time to complete the parallel lift is 3 seconds and 3 seconds for atg
Total power output for parallel squat: 4.064w
Total power output for atg squat: 6.773w
More accurate calculations could be made if you filmed the lift next to a meter stick but you're welcome!
Huh? you said this:
How does what you said above prove that using one specific (max) range of motion will develop power in a limited ROM?
I'm sure Bruce Lee's "One Inch Punch" would be more powerfull if it travelled further in the same time or he had a bigger back swing but it woudn't be a One Inch Punch then wouldn't it?
Just because a full-backswing/deep squat might be more powerful doesn't count for much if your practical application doesn't allow for a full back swing.
Not trolling dude, maybe I wasn't being clear.
Adamklam put it nicely...
Minchia uses leg power for take-downs.
I agree he would have more power if when he performed a take-down he had the time/opportunity to quickly go ATG and "spring" at his opponent, but he pretty much has to exert force from a static position, or with only minimal bend/bounce in his knees (depth) due to his opponent not giving him enough time.
Therefore Im arguing he would benefit from training that specific range of motion.
Another example would be a batsmen (cricket) not having time to take a full backswing. Wouldn't it be beneficial for him to train that limited range of motion for power too?
The a2g squat still comes out on top, and I said that atg would produce more power than 20% more at parallel, 140kg is 40% more!
If you videoed your 2 maxes next to a meter stick and did the calculations, I can pretty much guarantee that the a2g squat will produce more power
But tbh if you want max force production do power snatches or parallel box squats with 60% of your max