Thread:KingCannon/@comment-25296247-20160711194453/@comment-25501246-20160711203741

Musculoskeletal Coiling actually conveys better what the power is about. Essentially, compression and release of force, like a spring.

In regards to Explosiveness and Muscle Enhancement, the Viz translation uses "kinetically boosted by four, strength enhanced by three".

Every translation I've seen so far agree that there are Power-Up Quirks being used. This gives credence that umbrella terms were used, with specific Quirk names not actually being used at all.