The influence of backrest inclination and lumbar support on lumbar lordosis

Spine

Volumn 4, Issue 1, 1979, Pages 52-58

  Andersson, G B J ^a   Murphy, R W ^a   Ortengren R ^a   Nachemson, A L ^a  

^a SAHLGRENSKA UNIVERSITY HOSPITAL   (Sweden)

Author keywords

Backrest; Lordosis; Lumbar spine; Lumbar support; Sitting

Indexed keywords

LORDOSIS; LUMBAR SPINE; METHODOLOGY; MUSCULOSKELETAL SYSTEM; NORMAL HUMAN; SUPPORT; THERAPY;

ADULT; FEMALE; HUMAN; HUMAN ENGINEERING; INTERIOR DESIGN AND FURNISHINGS; LUMBAR VERTEBRAE; MALE; POSTURE;

EID: 0018408028     PISSN: 03622436     EISSN: 15281159     Source Type: Journal    
DOI: 10.1097/00007632-197901000-00009     Document Type: Article

References (45)

1. Åkerblom B: Standing and sitting posture. With special reference to the construction of chairs, Stockholm, Nordiska Bokhandeln, 1948 (Thesis)
2. Åkerblom B: Anatomische and physiologische Grundlagen zur Gestaltung von Sitzen. In Sitting Posture. Edited by E Grandjean. London, Taylor, 1969, pp 6-17
3. Andersson BJG: On myoelectric back muscle activ-ity and lumbar disc pressure in sitting postures, Goteborg, GOTAB, 1974 (Thesis) •
4. Andersson BJG, Jonsson B, Ortengren R: Myo-electric activity in individual lumbar erector spinae muscles in sitting. A study with surface and wire electrodes. Scand J Rehabil Med (Suppl) 3: 91-108, 1974
5. Andersson BJG, Ortengren R: Myoelectric back muscle activity during sitting. Scand J Rehabil Med (Suppl) 3: 73-90, 1974
6. Andersson BJG, Ortengren R, Nachemson A, Elf- strom G: Lumbar disc pressure and myoelectric back muscle activity during sitting. I. Studies on an experimental chair. Scand J Rehabil Med 3:104, 1974
7. Andersson BJG, Ortengren R: Lumbar disc pres-sure and myoelectric back muscle activity during sitting. II. Studies on an ollice chair. Scand J Rehabil Med 3:115, 1974
8. Andersson BJG, Ortengren R: Lumbar disc pressure and myoelectric back muscle activity during sitting. III. Studies on a wheelchair. Scand J Rehabil Med 3:122, 1974
9. Andersson BJG, Ortengren R, Nachemson A, Elfstrom G: Lumbar disc pressure and myoelectric back muscle activity during sitting. IV. Studies on a driver’s seat. Scan J Rehabil Med 3:104, 1974
10. Andersson BJG, Ortengren R, Nachemson AL, Elfstrom G, Broman H: The sitting posture: An electromyographic and discometric study. Orthop Clin North Am 6 (1): 105-120, 1975
11. Branton P: Behaviour, body mechanics and discomfort. In Sitting Posture. Edited by EGrandjean. London, Taylor, 1969, pp 202-213
12. Brattgard SO: Anatomical-physiological demands on wheelchairs. Svensk Lakartidn 53:3026, 1956 (In Swedish)
13. Brattgard SO: Design of wheelchairs and wheel chair service based on scientific research. Readaptation 162:11, 1969
14. Burandt U: Rontgenuntersuchung iiber die Stellung von Becken and Wirbelsaule beim Sitzen auf forge- neigten Flitchen. In Sitting Posture. Edited by E Grandjean. London, Taylor, 1969, pp 242-250
15. Busack E, Schlegel KF: Die SitzhaRung im Auto. Med Klin 57:1188, 1962
16. Carlsöö S: Writing desk, chair and posture of work. Stockholm, 1963 (In Swedish)
17. Carlsöö S: How man moves. London, Heinemann, 1972 Chaffin DB: Localized muscle fatigue definition and measurement. J Occup Med 15:346, 1973
18. Chaffin DB: Localized muscle fatigue-definition and measurement. J Occup Med 15:346, 1973.
19. Cobb JR: Outline for the study of scoliosis. Am Acad Orthop Surg Lect 5:261-275, 1948
20. deVries HA: Muscle tonus in postural muscles. Am J Phys Med 44:275, 1965
21. Floyd WF, Roberts DF: Anatomical and physiological principles in chair and table design. Ergonomics 2:1, 1958
22. Floyd WF, Silver PHS: The function of the erec- tores spinae muscles in certain movements and postures in man. J Physiol (London) 129:184, 1955
23. Floyd WF, Ward JS: Anthropometric and physiological considerations in school, office and factory seating. In Sitting Posture. Edited by E Grandjean, Taylor, London, 1969, pp 18-25
24. Grandjean E, Boni A, Kretzschmar H: The development of a rest chair profile for healthy and notalgic people. In Silting Posture. Edited by E Grandjean, Taylor, London, 1969, pp 193-201
25. Keegan JJ: Alterations of the lumbar curve related to posture and seating. J Bone Joint Surg (Amer) 35:589, 1953
26. Knutsson B, Lindh K, Telhag H: Sitting an elec-tromyographic and mechanical study. Acta Orthop Scand 37:415, 1966
27. Kroemer KHE: Seating in plant and office. Am Ind Hyg Assoc J 32:633, 1971
28. Kroemer KHE, Robinette JC: Ergonomics in the design of office furniture. Industr Med Surg 38:115,1969
29. Lundervold AJS: Electromyographic investigations of position and manner of working in typewriting. Acta Physiol Scand (Suppl) 84, 1951
30. Lundervold AJS: Electromyographic investigations during sedentary work, especially typewriting. Br J Phys Med 14:32, 1951
31. Lundervold AJS: Electromyographic investigations during typewriting. Ergonomics 1:226, 1958
32. Mandal AC: Work chair with an inclinable seat. Ugeskr Laeg 132:1699, 1970 (In Danish)
33. Nachemson A, Elfstrom G: Intravital dynamic pres-sure measurements in lumbar discs. Scand J Rehabil Med (Suppl) 1, 1970
34. Nachemson A, Morris JM: In vivo measurements of intradiscal pressure. J Bone Joint Surg (Amer) 46:1077, 1964
35. Okushima H: Study on hydrodynamic pressure of lumbar intervertebral disc. Arch Jpn Chir 39:45,1970 (In Japanese)
36. Peters T: Antropometrische und physiologische Grundlagen zur Gestaltung von Biiroarbeitssitzen. In Sitting Posture. Edited by E Grandjean, London, Taylor, 1969, pp 48-56
37. Rizzi M: Entwicklung eines verschiebbaren Riic- kenprofils fur Auto- und Ruhesitze. In Sitting Posture. Edited by EGrandjean, London, Taylor, 1969, pp 112-119
38. Rosemeyer B: Electromyographische Untersuch- ungen der RUcken- und Schultermuskulatur im Ste- hen and Sitzen unter Berucksichtigung der Haltung des Autofahrers. Arch Orthop Unfallchir 71:59,1971
39. Rosemeyer B: Eine Methode zur Beckenfixierung im Arbeitssitz. Z Orthop 110:514, 1972
40. Schoberth H: Sitzhaltung, Sitzschaden, Sitzmobel. Berlin, Springer, 1962
41. Schoberth H: Die Wirbelsaule von Schulkindern— orthopadische Forderungen an Schulsitze. In Sitting Posture. Edited by E Grandjean, London, Taylor, 1969, pp 98-111
42. Snorrason E: Easy chair problems, tidskr for danske sygehuse, Band 44, 1968, pp 3-15 (In Danish)
43. Tzivian IL, Rayhinstein VH, Motov VF, Oveseychik JG: Results of clinical study of pressure within the intervertebral lumbar discs. Ortop Travmalol Protez 6:31, 1971 (In Russian)
44. Umezawa F: The study of comfortable sitting postures. J Jap Orthop Assoc 45:1015, 1971 (In Japa-nese)
45. Yamaguchi Y, Umezawa F, Ishinada Y: Sitting pos-ture: An electromyographic study on healthy and notalgic people. J Jap Orthop Assoc 46:277, 1972