Adrenaline can be experienced in high performance states, low performance states, and paralysis/freeze reaction.

From OptimalScience

Total Support

A study analyzing performance under acute stress during hand-to-hand combat experiences of soldiers, done by Peter R. Jensen (New Mexico State University) and Craig A. Wrisberg (University of Tennesse) indicate the following: (a) the hand-to-hand combat experiences of these soldiers comprise stressors stemming from a variety of sources (b) their combat experience demanded a speedy and accurate interpretation of surrounding conditions, and the swift strategizing coupled with focused action (c) the experience also produced powerful psychological and physiological reactions

Nuanced Support

Contradictory