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	1.	Lumbar disc pressure and myoelectric back muscle activity during sitting. II. Studies on an office chair. [electronic resource] by Andersson, B J Ortengren, R Producer: 19741226 In: Scandinavian journal of rehabilitation medicine vol. 6 Availability: No items available. Save to lists Add to cart (remove)
	2.	Myoelectric back muscle activity during sitting. [electronic resource] by Andersson, B J Ortengren, R Producer: 19741216 In: Scandinavian journal of rehabilitation medicine. Supplement vol. 3 Availability: No items available. Save to lists Add to cart (remove)
	3.	Lumbar disc pressure and myoelectric back muscle activity during sitting. 3. Studies on a wheelchair. [electronic resource] by Andersson, B J Ortengren, R Producer: 19741226 In: Scandinavian journal of rehabilitation medicine vol. 6 Availability: No items available. Save to lists Add to cart (remove)
	4.	Myoelectric activity in individual lumbar erector spinae muscles in sitting. A study with surface and wire electrodes. [electronic resource] by Andersson, B J Jonsson, B Ortengren, R Producer: 19741216 In: Scandinavian journal of rehabilitation medicine. Supplement vol. 3 Availability: No items available. Save to lists Add to cart (remove)
	5.	Valsalva maneuver biomechanics. Effects on lumbar trunk loads of elevated intraabdominal pressures. [electronic resource] by Nachemson, A L Andersson, B J Schultz, A B Producer: 19861003 In: Spine vol. 11 Availability: No items available. Save to lists Add to cart (remove)
	6.	Lumbar disc pressure and myoelectric back muscle activity during sitting. I. Studies on an experimental chair. [electronic resource] by Andersson, B J Ortengren, R Nachemson, A Elfström, G Producer: 19741226 In: Scandinavian journal of rehabilitation medicine vol. 6 Availability: No items available. Save to lists Add to cart (remove)
	7.	Lumbar disc pressure and myoelectric back muscle activity during sitting. IV. Studies on a car driver's seat. [electronic resource] by Andersson, B J Ortengren, R Nachemson, A Elfström, G Producer: 19741226 In: Scandinavian journal of rehabilitation medicine vol. 6 Availability: No items available. Save to lists Add to cart (remove)
	8.	The sitting posture: an electromyographic and discometric study. [electronic resource] by Andersson, B J Ortengren, R Nachemson, A L Elfström, G Broman, H Producer: 19750510 In: The Orthopedic clinics of North America vol. 6 Availability: No items available. Save to lists Add to cart (remove)