Back-to-Back Medicine Ball Twist Pass | Friends

Quick Intro

The Back-to-Back Medicine Ball Twist Pass, also known as the Back-to-Back Russian Twist Pass or the Partner Oblique Twist Pass, is a well-known partner core exercise. Two partners sit on the floor back to back with knees bent. One holds a medicine ball. Both turn toward the same side of the room and the ball is handed across. Then both turn to the other side and it is handed back. The ball travels round and round the pair in a loop, and every turn works the side stomach muscles.

The turning action is the same as a Russian Twist. In the partner version the turn ends at your partner’s hands. The timing has to match theirs too. That shared rhythm is what makes it a two-person exercise.

What You’ll Need

A medicine ball. Three to five kilograms suits most adults. Start lighter if you are new to it.
A mat or soft floor for both partners to sit on.
Clear space behind and to the sides of both partners for the turn.

What It Works

The side stomach muscles (obliques), which turn the trunk toward the ball and back again. They do most of the work.
The front stomach muscles (rectus abdominis), which hold the trunk upright as you sit.
The deep stomach muscle (transverse abdominis), which braces the middle so the turn comes from the ribs and the hips stay planted.
Hip flexors (iliopsoas), which hold the thighs and trunk in the seated V.
The front of the shoulder (anterior deltoid), which carries the ball out to the side for each hand-off.

The Technique

Sitting

Sit back to back, knees bent, feet flat on the floor about hip-width apart.
Shuffle close enough that your backs nearly touch. When you turn to the side with your arms bent, your hands should meet your partner’s without stretching.
Sit tall. A slight lean back is fine. A rounded lower back makes the turn smaller and puts strain where it is not wanted.
One partner holds the ball at the chest with both hands.

Turning together

Both partners turn toward the same side of the room. Because you face opposite ways, this means one of you turns to the right and the other turns to the left. Say the direction before the first rep, for example “window side first”, so there is no confusion.

Turn from the ribs. The shoulders and chest rotate together and the arms move with them. The hips and knees stay still and facing forward.

The hand-off

The partner with the ball brings it out to the agreed side with the elbows slightly bent.
The other partner places both hands on the ball.
The receiver says “got it” and only then does the passer let go.
Both turn back through the middle to the other side of the room.
The partner now holding the ball hands it back in the same way.

One hand-off on each side is one rep. After half the planned reps, start the loop toward the other side so both directions get the same work.

Breathing

Breathe out as you turn and hand the ball across. Breathe in as you turn back through the middle.

How Many

Two or three sets of ten to fifteen reps is a good starting point, with a minute of rest between sets. Keep the pace steady. This is a control exercise, and rushing makes the hand-offs sloppy.

Making It Easier or Harder

Easier:

Use a lighter ball.
Make smaller turns, handing the ball off closer to your sides.
Lean back less.

Harder:

Use a heavier ball, within what both can control.
Lean back further, which makes the stomach work harder to hold the position.
Move to the Back-to-Back Weight Plate Twist Pass, which adds load and grip.
Move to the Standing Back-to-Back Medicine Ball Twist Pass, which brings the hips and legs in.

Staying Safe

Hand the ball off. Never toss it. A thrown ball at the end of a turn, where control is weakest, is easy to fumble onto a knee or foot.
Clear space behind both partners.
Keep the lower back upright. Stop if it aches.
Agree the direction before you start so you do not both turn the same way and miss each other.

Common Mistakes

Turning only the arms. The trunk should rotate. The arms just carry the ball.
Lifting the hips or knees to reach. Keep the lower body planted.
Sitting too far apart. If you have to stretch to reach, shuffle in.
Turning out of sync. Count or call each side if the rhythm drifts.

Fitting It Into a Session

Place it after the main lifts or games, as a core block. It also works in a circuit, alternated with a lower-body exercise. It pairs well with the Pallof Press, which trains the obliques to resist turning.

Back-to-Back Weight Plate Twist Pass uses a plate in place of the ball.
Standing Back-to-Back Medicine Ball Twist Pass is done on the feet.
Kneeling Medicine Ball Twist Pass is done on the knees, with no help from the legs.
Seated Medicine Ball Twist Pass Race turns the same loop into a timed challenge.
Overhead Medicine Ball Pass Loop passes the ball over the head and between the legs.

FAQ

Which way do we turn first?

Agree a side of the room before the first rep. Facing opposite ways means one partner turns right and the other left, and naming a landmark avoids confusion.

Should our backs touch?

They can touch lightly or sit a few centimetres apart. What matters is that the hand-off happens with bent elbows and no stretching.

Is this better than a solo Russian twist?

It trains the same muscles. The partner version adds timing and a hand-off, and many people find it easier to keep going with someone else setting the rhythm.