What is the purpose of 'levers' in body mechanics?

The purpose of levers in body mechanics is to move objects by resting on a base of support. In the context of human movement, the body acts as a series of levers, where the bones serve as the bars, the joints act as the fulcrums, and the muscles provide the force needed to move these levers. This system allows for efficient movement and the ability to lift or move loads with less effort.

When you think about everyday activities such as lifting a heavy box, the longer the lever arm (the distance from the fulcrum to where the force is applied), the less force is required to lift that load. This principle is essential in physical therapy, nursing, and other health-related fields, as it helps caregivers understand how to assist individuals in moving safely and effectively.