Trunk Rotation Test

What This Test Measures

• This test measures the rotational flexibility and range of motion of your trunk, including the muscles and joints of the spine, obliques, and surrounding musculature.

Equipment Needed

• Wall or flat vertical surface
• Measuring tape or ruler
• Chalk or marker (optional)
• A partner to assist with measurement

How to Perform the Test

1. Stand with your back against a wall, feet shoulder-width apart and about 30cm (12 inches) away from the wall.
2. Extend both arms straight out in front of you at shoulder height, palms together.
3. Keeping your feet flat on the floor and hips facing forward, rotate your trunk to one side as far as possible.
4. At your maximum rotation, touch the wall behind you with the closest hand and mark or note the position.
5. Measure the distance from the center of your back to the point of contact on the wall.
6. Return to the starting position and repeat on the other side.
7. Perform three trials on each side and record the best result for each.

Tips for Best Results

• Warm up your trunk and core with gentle twisting stretches before the test.
• Keep your hips and feet facing forward throughout — only your upper body should rotate.
• Move slowly and smoothly to your maximum range without bouncing or jerking.
• Breathe out as you rotate to help increase your range of motion.
• Test both sides to identify any rotational asymmetries.

Interpreting Your Results

• Your trunk rotation distance is compared to normative data based on age and gender. Greater rotation indicates better trunk flexibility, which is important for sports involving twisting movements (golf, tennis, swimming, throwing) and for reducing the risk of lower back injuries.