What force plate data reveals that visual assessment cannot: a squat case study

Something worth documenting from a recent force plate squat assessment at Heal Young Massage.

From visual observation alone, the restriction was already identifiable — left hip limitation at approximately 40% squat depth, with tension transferring up through the trunk to the right shoulder.

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But the force plate data revealed a second layer that observation could not reach.

Because of that restriction, a basic squat could not be performed with a stable and repeatable movement strategy. The body compensated with different muscle groups on every rep. Braking load shifted from 100% left to 100% right across five repetitions. The eccentric deceleration coefficient of variation was 667% — meaning no two reps loaded the same way.

The clinical note for the next session: if the left hip restriction improves, the eccentric deceleration asymmetry is expected to become more even on retesting. That gives a measurable, objective outcome marker to track.

The broader point: visual assessment identifies what the body is doing. Objective measurement reveals how the nervous system is managing it — and whether it has found a stable strategy or is still searching for one.

Both are necessary. One without the other leaves a significant portion of the clinical picture invisible.

If you have been exercising consistently and a particular movement still produces the same discomfort — it may be worth finding out whether a restriction is driving it. Assessment is the starting point.

Book a force plate squat assessment at Heal Young Massage, Varsity Lakes, Gold Coast. healyoungmassage.com.au