Which of the following is a risk factor for musculoskeletal disorders?

Musculoskeletal disorders (MSDs) are often associated with physical stressors that affect the muscles, tendons, ligaments, and nerves. Carrying heavy loads frequently is a significant risk factor for developing these types of disorders. This action places excessive strain on the body, particularly on the back, shoulders, and joints, which can lead to injuries over time. When heavy objects are lifted or carried regularly, it can result in muscle fatigue, joint stress, and repetitive strain injuries, all of which contribute to the higher occurrence of MSDs.

In contrast, regular ergonomics training and using proper lifting techniques are strategies designed specifically to minimize the risk of such injuries. Training can help workers understand how to position their bodies properly and use tools that reduce strain. Similarly, working in a well-lit environment, while beneficial for safety and overall efficiency, does not directly relate to the physical strain that contributes to musculoskeletal disorders. Thus, carrying heavy loads frequently remains the primary risk factor in this context.