• Zudin Puthucheary and Nicholas Hart.
• Lane Fox Respiratory Unit, Department of Critical Care, Guy's & St Thomas' NHS Foundation Trust, Westminster Bridge Road, London SE1 7EH, UK.
• Crit Care. 2009 Jan 1;13(4):167.

AbstractMuscle weakness is highly prevalent during acute critical illness, with the poor exercise performance that occurs after critical illness being recognized as a consequence of skeletal muscles weakness. Advanced techniques to measure peripheral muscle strength are available, but they have limited use in the clinical setting. Simple volitional methods to assess strength are limited because they rely on patient motivation, which can be problematic in the critical care setting. At present, the mechanisms that underlie skeletal muscle wasting and weakness are poorly understood, but use of rehabilitation early in critical illness appears to have beneficial effects on outcome. The future direction will be to determine the underlying mechanisms as well as developing rehabilitation programmes during both the acute and the post critical illness stages.

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