Continuous Passive Motion in Seating

Decoupled pelvis adjustment to induce lumbar motion: A technique that controls low back load in sitting

“…Aota et al (2007) did also not observed any statistical evidence for a reduced feeling of lumbar discomfort. However, they observed that the induced lumbar motion was less than that reported by Reinecke et al (1994), which might explain why no positive effect was found. Adjustments of the lumbar support that induce a more profound effect on lumbar motion might increase the beneficial effect on lumbar pain relief in sitting.…”

“…In order to reduce incidence of low back injury in individuals with insufficient postural variation, several techniques have been reported to enhance lumber motion and thereby relieve static loads associated with spinal tissue degeneration and pain (van Deursen et al, 1999, Aota et al, 2007, Reinecke et al, 1994. Van Deursen et al (1999) described an ergonomic chair that uses passive motion for continuous axial pelvis rotation imposed by extremely small rotational seat movements in the horizontal plane.…”

“…Contrary to the concept of induced axial spinal rotations, some techniques have been reported that affects spine curvature in the sagittal plane. Reinecke et al (1994) described a commercially available device (Backcycler, ergonomics Inc., Winooski, VT) that induces continuous passive motions to the lower spine by an alternating inflatable lumbar support. Based on subjective measures for low back discomfort, they reported an improved tolerance for prolonged sitting.…”

Continuous Passive Lumbar Spinal Motion: The BackCycler® System for Preventing Low Back Discomfort, Stiffness and Fatigue During Sitting

“…Optimal flow rates were 6-8 liters per minute and preferred maximal bladder pressures approximated 1.5 psi. 2 EFFICACY TESTING DURING SIMULATED DRIVING -Twelve people without complaints of back pain sat for two-hour sessions on consecutive days with and without the CPLSM in random order. The automobile seat was vibrated 3mm vertically at 4.5Hz, while the person watched a video at windshield position.…”

Are you sitting comfortably? The political economy of the body

“…LBPs are rife in the world system, particularly in those areas where work and leisure have moved from being largely active practices to sedentary ones. Seventy‐five per cent of all workers in industrialised societies now have sedentary jobs, and this figure is increasing in many countries (Reinecke and Hazard 1994: 157). This is a trend synonymous with the spread of industrial and consumer societies over the course of the 20 th century and has been linked with a number of other social and health problems such as obesity.…”