multidimensional links among biomechanical, psychosocial, and personal variables
as notes chapter 2, several prominent people have declared that psychosocial variables are the most significant factors in LBD
this is an important issue since effective intervention must address the real cause and consequence of back troubles
in this section we will see that virtually all studies that properly measured or caiaulated the physical demands of tasks found that people subjected to specific machanical stressors are at higher risk of LBD but that there also appear to be some mitigating issues