References
- ANDERSSON , B. J. G. , ORTENGREN , R. , and NACHEMSON , A. , 1977 , Intradiskal pressure, intraabdominal pressure and myoelectric back muscle activity related to posture and loading . Clinical Orthopaedics and Related Research , 129 , 156 – 164 .
- ANDERSSON , B. J. G. , ORTENGREN , R. , NACHEMSON , A. , and ELFSTROM , G. , 1974 , Lumbar disc pressure and myoelectric back muscle activity during sitting . Scandinavian Journal of Rehabilitation Medicine , 6 , 104 – 114 .
- BARTELINK , D. L. , 1957 , The role of abdominal pressure in relieving the pressure on the lumbar intervertebral discs . Journal of Bone and Joint Surgery B , 39 , 718 – 725 .
- BRADFORD , F. K. , and SPURLING , R. G. , 1945 , The Intervertebral Disc ( Springfield, Illinois CHARLES C. THOMAS PUBLISHER ).
- BROWN , J. R. , 1972 , Manual Lifting and Related Fields. An Annotated Bibliography ( Toronto LABOUR SAFETY COUNCIL OK ONTARIO ).
- BRUNING , J. L. , and KINTZ , G. L. , 1977 , Duncan's multiple-range test . In Computational Handbook of Statistics ( Glen view , Illinois SCOTT FORESMAN AND COMPANY ). Pp. 116 – 119 .
- DAVIS , P. R. , 1959 , Posture of the trunk during the lifting of weights . British Medical Journal , 1 , 87 – 89 .
- DAVIS , P. R. , TROUP , J.D.G. , and BURNARD , J.H. , 1965 , Movements of the thoracic and lumbar spine while lifting a chronocyclographic study . Journal of Anatomy , 99 , 13 – 24 .
- En- , N. , and WEHN , P. , 1962 , Measurements of the intra-abdominal pressure in relation to weight bearing of the lumbosacral spine . Journal of Oslo City Hospitals , 12 , 205 – 217 .
- FLOYD , W. F. , and SILVER , P. H. S. , 1955 , The function of the erectores spinae in certain movements and postures in man . Journal of Physiology , 129 , 184 – 203 .
- KOSIAK , M. , AURELIUS , J. R. , and HARTFIEL , W. F. , 1966 , Backache in industry . Journal of Occupational Medicine , 8 , 51 – 58 .
- KUMAR , S. , 1971 , Studies of the trunk mechanics during physical activity . Unpublished Ph.D. thesis , The University of Surrey , Guildford , U.K.
- KUMAR , S. , 1974 , A study of spinal motion during weight lifting . Irish Journal of Medical Sciences . 143 , 86 – 95 .
- MAOORA , A. , 1974 , Investigation of the relation between low back pain and occupation . Scandinavian Journal of Rehabilitation Medicine , 6 , 81 – 88 .
- MORRIS , J. M. , LUCAS , D. B. and BRESLER , B. , 1961 , Role ofthe trunk in stability of spine . Journal of Bone and Joint Surgery A , 43 , 327 – 351 .
- NACHEMSON , A. , and ELFSTROM , G. , 1970 , Intravital dynamic pressure measurements in lumbar discs . Scandinavian Journal of Rehabilitation Medicine Supplement , 1 .
- NACHEMSON , A. , and MORRIS , J. M. , 1964 , In vivo measurements of intradiscal pressure. Discometry, a method for determination of pressure in lower lumbar discs . Journal of Bone and Joint Surgery A , 46 ,. 1007 – 1092 .
- TROUP , J. D. G. , 1965 , Relation of lumbar spine disorders to heavy manual work and lifting . Lancet , 17 April , 857 – 861 .