During seated forward trunk flexion, the thoracic segment angular displacement (P=0.005) and the thoracolumbar spine range of motion (P=0.002) were significantly decreased in the obese group .

Krista M. Cyr, Sara E. Wilson, Fahed Mehyar, Neena K. Sharma, Trunk Control Response to Unstable Seated Posture During Various Feedback Conditions in People with Chronic Low Back Pain, Journal of ...

The mean trunk flexion strength was 2.2±0.9 Nm/kg. The knee valgus moment was significantly correlated with the change in lateral trunk bending angle (r=0.87, P<.05) and the trunk flexion strength ...