Judo Level 1: Koshi Guruma — Turn over the hip without twisting the neck

腰車, koshi-guruma, is a hip technique. Koshi means hip and guruma means wheel, describing the partner’s rotation over the hip.

Kodokan describes forward imbalance, an arm around the neck and a deep hip entry as the axis. The wrapping arm coordinates positioning with the sleeve-control hand; it should not twist the neck to drag the body after it.

The wheel in the name suggests rotation, but the useful question is where its axis lies. Kodokan describes a deep hip entry, with the hip acting as the axis and an arm around uke's neck area. Watch both uke's upper body and waist. Reading the action as an arm dragging the head down misses the role of the hip.

O Goshi passes the arm under the armpit around the back. Arm placement distinguishes the two, but a distant hip leaving only a pull on the head is not an example to copy.

Both koshi-guruma and o-goshi are hip techniques, but the wrapping arm differs. O-goshi reaches beneath the armpit around the waist; koshi-guruma wraps around the neck area. This helps identify the technique in a clip, but is not a reason to twist the neck harder when the hip entry is insufficient. Upper-body control must travel with the body's rotation.

Have an instructor arrange arm distance and hip position before slow practice. Stop immediately if the partner feels neck twisting; do not compensate for a missed hip entry by squeezing harder.

The Level here refers to the IMAC Dojo curriculum. Use the article and clips to prepare questions and review them with your instructor. Practical training needs a suitable partner, space and controlled conditions.

Ask whether uke is already unbalanced before rotating across the hip, and how the two waists relate at that point. Have your instructor check uke's neck comfort together with support at the finish. A fast-looking demonstration cannot establish that your own wrapping position or distance is appropriate.