1: Lie supine, sacrum centred over middle gridline on base mat. Hips and knees flexed at 90°, feet unsupported
2: Adjust housing height to align flat pad with apex of medial femoral condyles
3: Feet in line with knees/hips and patella (knee caps) pointing to the ceiling.
4: Record height of top of carriers
5: Where subject has a long femur which prevents testing in this position, housing can be rotated to horizontal with legs through upright (as shown in photo 3)
1: Test bilaterally
2: Keep pelvis still
3: Tension the short adductors / guy wires close to the pelvis to slowly squeeze the sensor pads
4: High medial adductor / groin should be evident
5: Build to maximum force over 5 seconds