Source: Starfinder Core Rulebook p.105
As a standard action, you can increase the effects of gravity on the internal organs or workings of a target within 30 feet, causing it to have difficulty maintaining its normal functionality. The target must succeed at a Fortitude save or become staggered for 1 round. This revelation also affects constructs. You can maintain this effect as a move action each round, but the target can attempt a new saving throw each round to end the effect. Once a creature succeeds at this save or the effect ends, you can't target that creature with crush again for 24 hours.
When you are attuned or fully attuned, you can spend 1 Resolve Point to also stun the target for 1 round. Maintaining crush on subsequent rounds extends the staggered effect, but not the stunned effect.