The effect of backrest inclination, lumbar support and thoracic support on the intra-abdominal pressure while lifting

References

• AKERBLOM , B. , 1948 , Standing and Silting Postures ( Stockholm NORDISKA BOKANDELN ).
   Google Scholar
• AKERBLOM , B. , 1954 , Chairs and sitting . In Human Factors in Equipment Design ( Edited by W. F. FLOYD and A. T. WELFORD ) ( London LEWIS ), pp. 29 – 35 .
   Google Scholar
• ANDERSSON , B. J. G. , JONSSON , B. , and ORTENGREN , R. , 1974 a , Myoelectric activity in individual lumbar erector spinal muscle in sitting. A study with surface and wire electrodes . Scandinavian Journal of Rehabilitation Medicine , Suppl. 3 , 91 – 108 .
   Google Scholar
• ANDERSSON , B. J. G. , and ORTENGREN , R. , 1974 a , Myoelectric back muscle activity during sitting . Scandinavian Journal of Rehabilitation Medicine , Suppl. 3 , 73 – 90 .
   Google Scholar
• ANDERSSON , B. J. G. , and ORTENGREN , R. , 1974 b , Lumbar disc pressure and myoelectric back muscle activity during sitting . Scandinavian Journal of Rehabilitation Medicine , Suppl. 6 , 115 – 121 .
   PubMedGoogle Scholar
• ANDERSSON , B. J. G. , ORTENGREN , R. , NACHEMSON , A. , and ELFSTROM , G. , 1974 b , Lumbar disc pressure and myoelectric back muscle activity during sitting . Scandinavian Journal of Rehabilitation Medicine , Suppl. 6 , 104 – 114 .
   PubMedGoogle Scholar
• DAVIS , P. R. , and STUBBS , D. A. , 1977 , Safe level of manual forces for young males . Applied Ergonomics , 8 , 219 – 228 .
   PubMed Web of Science ®Google Scholar
• DAVIS , P. R. , STUBBS , D. A. , and RIDD , J. E. , 1977 , Radio pills their use in monitoring back stress . Journal of Medical Engineering and Technology , 4 , 209 – 212 .
   Web of Science ®Google Scholar
• FLOYD , W. F. , and ROBERTS , D. F. , 1958 , Anatomical and physiological principles in chair and table design . Ergonomics , 2 , 1 .
   Web of Science ®Google Scholar
• FLOYD , W. F. , and WARD , J. S. , 1969 , Anthropometric and physiological considerations in school, office and factory seating . In Sitting Posture ( Edited by E. GRANDJEAN ) ( London TAYLOR & FRANCIS LTD ), pp. 18 – 25 .
   Google Scholar
• KEEGAN , J. J. , 1953 , Alterations of the lumbar curve related to posture and seating . Journal of Bone Joint Surgery , 35 , 589 – 603 .
   PubMed Web of Science ®Google Scholar
• KNUTSSON , B. , LINDH , K. , and TELHAG , H. , 1966 , Sitting-an electromyographic and technical study . Acta Orthopaedica Scandinavica , 37 , 415 – 428 .
   PubMed Web of Science ®Google Scholar
• KUMAR , S. , 1971 , Studies of trunk mechanics during physical activity . Ph.D. thesis , Surrey University .
   Google Scholar
• LUNDERVOLD , A. J. S. , 1951 , Electromyographic investigations during sedentary work, especially typewriting . British Journal of Physical Medicine , 14 , 32 .
   PubMedGoogle Scholar
• MURRELL , K. F. H. , 1965 , Ergonomics Man in His Working Environment ( London CHAPMAN & HALL ).
   Google Scholar
• STUBBS , D. A. , 1976 , Trunk stresses in construction workers . Ph.D. thesis , University of Surrey .
   Google Scholar
• UMEZAWA , F. , 1971 , The study of comfortable sitting postures . Journal of the Japanese Orthopaedic Association , 45 , 1015 .
   PubMedGoogle Scholar
• YAMAGUCHI , Y. , UMEZAWA , F. , and ISHINADA , Y. , 1972 , Sitting posture an electromyographic study on healthy and notalgic people . Journal of the Japanese Orthopaedic Association , 46 , 277 .
   Google Scholar