Power-ups?

Forgive me if this is really obvious, but I was wondering if things like speed-boost, damage-up, etcetra, were cannon things the UNSC had in the “real world”, or do they only exist on the Infinity’s holodeck?

I’m not sure as to if they’re cannon, but I see no reason the UNSC couldn’t create surge packets that increase or ‘Overclock’ a certain aspect of the armour for a short period of time.
For example, Overclocking the shielding systems to sustain Over-shield, or the mechanical servo’s to increase reflex and running speed.

Not entirely sure how to explain damage increase. Perhaps a magazine of hollow-point bullets? That one is a little more sketchy than the other two, though, but still perfectly feasible.