For example, genetically determined personal factors that lead to a ‘natural progression’ of disc degeneration is probably modified to some degree by environmental factors, such as lifting heavy weights (Battie et al., 2004).
A conceptual model was designed by Marras (2005) to illustrate how different factors contribute to LBP both by themselves and through interactions with other factors.
Research is being conducted presently to test for risk factor interactions and interrelationships between risk factor categories have been demonstrated (Marras, 2005).