3 months duration) whiplash. A secondary aim is to determine if pain severity, level of disability and fear of movement/(re)injury predict response to a physical activity program. Methods / Design This paper presents the rationale and design of a randomised controlled trial examining the effects of advice and individualized sub-maximal exercise programs in the treatment of whiplash associated disorders. Discussion This paper highlights the design, methods and operational aspects of a significant clinical trial in the area of whiplash and chronic pain."/>
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