Trunk rotation stabilization
Trunk rotation stabilization is a standing core exercise. You hold a light ball in front of you and turn your upper body slowly from side to side while your feet stay planted. The muscles around your waist turn you, then have to stop you and hold you steady at the end of each turn. It needs only a ball and a clear space.
How to do the trunk rotation stabilization
- Stand with your feet a little wider than hip width and your toes pointing forward. Keep your knees soft. Hold a light ball in both hands in front of your stomach, elbows bent and close to your sides.
- Stand tall and gently tighten your stomach muscles, so your trunk feels steady before you move.
- Rotate your chest and shoulders slowly toward one side, carrying the ball out that way with your arms. Watch the ball as it goes.
- Turn from your waist and upper back, keeping your hips facing forward as much as you can and your feet planted.
- Pause briefly, return the ball to the center slowly, then repeat the turn toward the other side.
What you should feel
Work around your waist and through your middle back, with your arms busy holding the ball. Your lower back should feel steady rather than strained.
Common mistakes
- Swinging the ball fast so its momentum carries you round.
- Letting your feet pivot or your knees roll inward as you turn.
- Leaning back or slumping instead of staying tall.
- Holding your breath.
How often
Many programs use 1 to 3 sets of 8 to 12 slow turns to each side, 2 or 3 days a week. Your physio will adjust this.
Stop and check with your physio if
- Sharp pain in your lower back, or pain, tingling or numbness that spreads down a leg.
- You feel dizzy, lightheaded, faint or sick, or the room seems to spin. Stop, sit down and get medical advice the same day before you exercise again. If you faint, it does not settle within a few minutes of sitting still, your vision suddenly blurs or goes double, or you cannot stand or walk steadily, call emergency services.
- You wobble or feel you might lose your balance. Put the ball down and steady yourself, and do the next turns beside a counter.
From the clinic
The voice guide describes doing the turns in a squat with straight arms. The video shows him standing with soft knees and the ball held close, then carried out to each side as he turns, so start with that. A shallow squat or longer arms are ways to make it harder later, and your physio can tell you when. Keep the pace slow: stopping the ball under control at each side is where the trunk works hardest. For a seated version, see the seated ball twist.
Give yourself room to turn without hitting furniture, and choose a ball light enough to hold out from your body without strain. If you feel unsteady on your feet or have had a fall in the last year, stand within arm's reach of a counter you can grab.
Turning while you hold a weight out from your body is a movement often limited with low bone density (osteoporosis), so ask your physio first if you have it. If you have had a fracture in your spine, check with your physio before you begin. If you have had surgery on your spine, chest or heart in recent months, get the go-ahead from your surgical team or physio first. If you have had a hip replacement, get the go-ahead from your surgeon or physio before you try trunk rotation stabilization. Turning your body over planted feet can twist the hip joints if your pelvis turns too, and many surgeons ask you to avoid that for the first months after some operations.
Written and checked by the PocketPhysio editorial team. Last updated 2026-09-28.
This page is general education, not a diagnosis or a personal treatment plan. If you have pain, an injury or a health condition, see a physiotherapist or doctor before starting new exercises.
