Exercise Ball Crunch

Abdominals

Exercise Ball Crunch

LevelBeginner EquipmentExercise ball MechanicIsolation ForcePull

A crunch performed lying back on a stability ball, giving a greater range of motion for the abs.

Strength

Primary musclesAbdominals

Energy burned

≈ 17 kcalFor 3 × 8–12, rest 90s · ≈ 3.0 kcal/min

Estimate range 13–21 kcal (±25 %)

Muscle mass worked4 %

Effort during a set4.5 MET

Your lean mass53.5 kgBody fat estimated from BMI and age

Estimate ±25 %: muscles worked (from the exercise data), sets, reps, rest and your body. See the planner for whole sessions.

Setup

1Sit on an exercise ball and walk your feet forward until your lower back is supported by the ball.
2Place your feet shoulder width apart for balance.
3Cross your arms over your chest or lightly touch your head.

How to perform

1Tuck your chin slightly and curl your rib cage toward your pelvis.
2Lift your shoulders off the ball and squeeze your abs.
3Pause at the top, then lower back over the ball under control.
4Repeat without relaxing completely at the bottom.