The prevalence of lower back disorders and the high costs involved are an ongoing problem in industrialised countries. Research indicates an estimated 70-80% of all individuals will experience lower back pain (LBP) during the course of their lives. It is widely accepted that occupational demands and physical work contribute greatly towards onset, recovery and recurrence of symptoms. Rubber Tyred Gantry (RTG) crane drivers are particularly at risk, as their working posture forces them into various prolonged non-neutral trunk positions and extreme trunk flexion. Intrinsic factors...