Abstract

The increasing prevalence of adult obesity is a major global health problem. Causes include sedentary lifestyles and physical inactivity, as well as the place and style of work. This work aimed to assess the impact of an increase in BMI, resulting from a sedentary lifestyle, on the functioning of the human musculoskeletal system during daily activities. Standing and sitting down were analyzed using numerical simulations in the AnyBody Modeling System. The results showed that by 2050, an increase in body weight will lead to an 11% increase in lumbar spine loads and up to 14% increase in knee and hip joint loads compared to 2015. Increased body weight will also increase muscle fatigue, requiring the body to exert more force to perform the same activities. The BMI change prediction model shows that the average man will be overweight or obese in the coming years, which will likely increase musculoskeletal loads.

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