What happens to lumbago when bending over?

The waist pain caused by bending may be formed due to the following reasons: First, the waist burden will increase significantly when bending, taking the waist load as 100% when standing as an example, and the burden on the waist will increase by 50% or even more than 100% when bending, so when the waist is subjected to excessive load, it will cause waist pain symptoms. Secondly, if you suffer from some basic diseases when bending over, such as ligamentitis, lumbar muscle strain or lumbar disc herniation, the force generated by these diseases after bending over will act on the position of the lesion, making the lesion more serious, so it will cause pain symptoms.