Abs · Machines
Incline Twist Sit-up
The incline twist sit-up is a core-strengthening exercise that combines spinal flexion with torso rotation. It heavily targets the internal and external obliques alongside the rectus abdominis, making it an effective late-session movement for intermediate and advanced lifters.
How to do it
- Lie on an incline bench with your feet secured at the top.
- Place your hands behind your head or across your chest.
- Sit up while simultaneously twisting your torso to one side.
- Return to the starting position, then repeat twisting to the other side.
- Alternate sides with each repetition.
Common mistakes
- Yanking on the back of the neck places dangerous stress on the cervical spine and disengages the abs.
- Sitting up with a completely rigid, straight back shifts the workload to the hip flexors and stresses the lumbar spine.
- Using swinging momentum to twist at the top eliminates continuous tension on the obliques and risks spinal strain.
Tips
- Initiate the movement by rolling the ribcage toward the pelvis, then add the rotation during the final phase of the ascent.
- Keep the bench at a moderate angle until full control through the eccentric lowering phase is mastered.
- Exhale forcefully as you reach the twisted top position to maximize the contraction of the obliques.
Sets and reps
Perform 3–4 sets of 12–20 alternating reps (6–10 per side) with 45–60 seconds of rest between sets to target hypertrophy and endurance.
Muscles worked
Your coach guides every set
Turn on the coach in Gloox: it asks how you feel, picks the weight from your history and cues technique and rest. Rate each set and the next one is tuned to you.
On a computer? Point your phone's camera here to get the app.
Questions
Is the incline twist sit-up safe for the lower back?
Simultaneous flexion and rotation under an incline load can aggravate lower back issues; if any pain occurs, stop immediately and seek medical advice.
How can this exercise be replicated without a decline bench?
Floor-based bicycle crunches or cross-body crunches offer a comparable rotational stimulus for the obliques without requiring specialized equipment.
