“…According to this instability hypothesis, significant associations could be verified between low back pain and functional deficits of trunk muscle peak force (Cady et al, 1979;Denner, 1997;McNeill et al, 1980) and neuromuscular coordination patterns (Richardson, Hodges & Hides, 2004). Resulting deconditioning syndromes might not only be accompanied by functional disorders, but also by spinal mal-alignment and postural abberations (Müller, 1999).…”