Ergonomics is the science that studies the interaction between people, their workplace, and the environment. Ergonomics considers the physiology of workers in the design of tools, equipment, and work methods to improve working conditions and increase efficiency.
According to the National Institute for Occupational Safety and Health (NIOSH) there is no scientific evidence that either supports or refutes the effectiveness of back belts or braces in preventing injuries. However, NIOSH does not recommend the use of back belts or braces by individuals who do not have a history of back injuries. Back belts or braces may in fact give the user a false sense of security that may result in lifting a weight that is beyond his or her capability. Some effective methods for preventing back injuries are: