Adrenaline Rush is the Redguard racial power in The Elder Scrolls V: Skyrim. When activated it grants them drastically increased bonuses to their stats for one minute, making it good for emergencies during battle.
Caster regenerates Stamina 10x times faster for 60 seconds.
Note that this is based on the player's total current Stamina recovery rate. A Redguard Vampire using Adrenaline Rush under sunlight wouldn't recover Stamina, unless they have additional boosts to Stamina recovery rate from items, potions or perks. In other words, a Vampire would need to offset -100% Stamina recovery rate with additional effects (not necessarily 100%) to benefit from Adrenaline Rush.