Table 3.

Wisbey-Roth Core Stability Grading System

Grade 0	Unable to maintain an isometric contraction without compensatory movement of the core (i.e. lumbo- sacral and pelvis) in a position aimed to facilitate the stabilising role of key muscles.
Grade 1	Able to maintain an isometric contraction (10 to 20 seconds) without compensatory movement of the core (i.e. lumbo-sacral and pelvis) in a position aimed to facilitate the stabilising role of key muscles.
Grade 2	Able to maintain an isometric contraction (for 20 seconds) without compensatory movement of the core with superimposed slow movement of the limbs.
Grade 3	Able to maintain an isometric contraction (for 20 seconds) without inappropriate movement of the core while performing slow movements of the trunk itself.
Grade 4	Able to maintain an isometric contraction (for at least 20 seconds) without compensation /inappropriate movement of the core while performing fast movements of the limbs.
Grade 5	Able to maintain an isometric contraction (for at least 20 seconds) without compensation/inappropriate movement of the core while performing one of the following: - Fast movements of the trunk - if appropriate to activity required, with joint angle specific positioning and muscle function specific. Fast movements of the limbs in joint angle specific postures and muscle function specific (i.e. reproducing concentric/eccentric role of key stabilisers) Against increased resistance/increased load in joint angle specific postures and muscle function specific positioning, which are sport/activity specific.