Several researchers have suggested that twisting of the trunk is associated with low back pain. the 1st issue we need to deal with is to distinguish the idea of twisting from generating twisting torque.
Torque in the torso can be achieved whether or not the spine itself is twisted.
In general moderate twisting isn’t dangerous. over the years the debates have included twisting quickly and breaking the speed by hitting the end range of motion, back in 1970, Farfan suggested disc twisting could damage the collagen fibres in the annulus, especially if a neutral arch had been lost. Other reports say that twisting is less dangerous as the facet forms a mechanical stop , thus its the facets that can get injured.
What is Twisting torque? Imagine a twist that applies or transmits force!.As no muscle is designed (as a primary function), to create twisting torque all muscles are contracted, this increases compressive load. 50nm of extension, creates 800 newtons of spinal compression.
Generating high torque, when the spine is twisted is problematic. In short are you twisting… well, Ok! or are you twisting through your spine to load up an axe swing … probably not so good!
Ill show you in a future “Note” how to generate force through your hips and not through your back. But for now, repeated spine flexion will, according to Aultman et al ( 2005), will lead to discogenic trouble.