… which investigated trunk strength in combined motions of rotation and flexion/extension in …
trunk flexion, at each of these positions trunk was rotated to 20, 40, 60 while performing flexion …

… the motion synergy between different trunk motion segments (eg, … trunk motion synergy during
the performance of trunk flexion … spinal loading during trunk flexion and extension motion. …

… with the signals from the trunk flexor muscle groups (RA and EO) (A flex ). The common
area (A com ) between the resultant trunk extensor and flexor activation time series data was …

… stimulation to the knee and trunk extensors. The steady-state … extension moment and are
highly dependent upon hip flexion … by controlling the duty cycle between successive bursts of …

… For example, when using different methods (motion capture), Atwells et al. reported trunk
flexion between 77 and 80 (with respect to the horizontal) when walking with loads of 15.95 kg (…

… degrees (75 of trunk flexion). The subject's right knee was … duty cycle because it allowed
the longest available contraction and relaxation times and was similar to stimulation duty cycles …

… or driving environments, induces flexion in the lower back … on the spine postures and trunk
extensor muscle activity of … acceptable effort for a 90% duty cycle was approximately 2.5% (…

… during the flexion phase, or if a movement of the trunk, head, or … phases, ie, the duty cycle.
Whether absolutely or relatively the … We can exclude the effect of duty cycle to infer the effect of …

… (ie, 2 second duty cycle), the potential confounding effects of … the mass of the human trunk
in an upright posture when … early as 1000 cycles (2-10%); and 2) flexed postures have a …

… tasks at a known intensity and duty cycle, force/torque data … hand/grip) but no shoulder
or trunk studies met all inclusion/… Multiple intensity-duty cycle combinations were found for …