Inspiration for the Gates:Kaio-ken

[Senju Bean]

Since Kishi sometimes draw from DBZ, I'm guessing the Gates came from Kaio-ken. A tech that pushes the body beyond it's normal limits.

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[Holy Cross]

Also the green aura/sweat thing.

May not be red but it's still somewhat reminiscent

 

[RufusSerano]

Nope, both Naruto and Dragonball are using the same concept, but the concept existed long before any manga made use of it.

 

[TheRedAndGreenBeast]

Gear Second probably comes from it too then.

 

[bpkiddo]

dragon ball wasnt the first to come up with that idea.... its a scientific idea.... adrenaline in our body makes us do the same thing in real life... this mountain climber was climbing and the boulder he was holding onto gave... it fell on top of him and he was able to bench press it off of him.... i watched that on discovery channel btw