Acute fracture, suspected fracture or stress fracture in the limb to be tested — no maximal loading until imaging and healing are confirmed.

Recent surgery or a repaired tendon, ligament or muscle still inside the surgeon's protected phase — we test only within the loading limits your surgeon has set in writing.

Acute muscle tear, tendon rupture or an inflammatory arthritis flare in the muscle group being measured — testing is deferred until the acute phase settles.

Uncontrolled high blood pressure or an unstable cardiac condition — maximal isometric effort raises blood pressure sharply, so we need medical clearance first.

Inability to bear weight comfortably, or an unhealed wound, skin graft or incision where the sensor or gait markers sit — the site must be settled before testing.

Severe cardiovascular or respiratory limitation that prevents sustained treadmill walking, or a high falls risk without support — we use an alternative assessment instead.

Recent concussion with ongoing symptoms, active dizziness or vestibular symptoms, or a high-risk pregnancy — treadmill gait capture is postponed.

Pain severe enough that you cannot give a genuine maximal effort — the number produced would be misleading rather than merely uncomfortable, so we treat the pain first and measure afterwards.