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Strains and sprains to the back muscles can be caused by improper movements while lifting heavy loads, overuse of a muscle, sudden forceful movements, or direct trauma. [8] Herniated discs are associated with age-related degeneration, trauma such as a fall or car accident, and bending or twisting while lifting heavy weights. [9]
The lifting index can be used to identify the stresses that each lift will expose the employees. The general understanding is that as the LI increased, the higher risk the worker is exposed to. As the LI decreases, the worker is less likely to develop back related injuries. Ideally, any lifting tasks should have a lifting index of 1.0 or less. [3]
Examples include twisting, reaching, pulling, lifting, bending, or any other posture that can cause pain when sustained for a prolonged period. [2] Examples of awkward postures include: Bending or twisting the torso while lifting heavy objects: This can place excessive stress on the back muscles and spine.
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In East Africa, Luo women may carry loads of up to 70% of their own body weight balanced on top of their heads. Women of the Kikuyu tribe carry similar heavy loads, but using a leather strap wrapped around their forehead and the load to secure it while it is carried (see also: Tumpline). This results in a permanent groove in the forehead of the ...
Weightlifters are prone to various injuries, and understanding common lifting weights injuries is crucial for the prevention and effective management of the risk of injury. A study found that the most common weightlifting injuries (64.8%) occurred in the back (especially the lower back), knees, and shoulders. [25]
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If these tasks are performed repeatedly or over long periods of time, they can lead to fatigue and injury. The main risk factors, or conditions, associated with the development of injuries in manual material handling tasks include: Awkward postures (e.g., bending, twisting) Repetitive motions (e.g., frequent reaching, lifting, carrying)