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Lifting heavy weights

Diagram showing person lifting heavy weights.

Lifting the weight like the person on the left produces a greater torque about the lower spine (pivot) – the lifting force is at a greater perpendicular distance to the pivot. The back muscles must exert a huge force to provide a torque that balances the torque from the weight being lifted.

It is important to lift a heavy weight close to your body to reduce the torque produced around your lower spine.

Rights: The University of Waikato Te Whare Wānanga o Waikato
Published:21 June 2007Size: 33.78 KB