1. Psoas and iliacus muscles act in concert or selectively during natural movements in man;Andersson,1991
2. The role of the hip and trunk flexor muscles for stability, load and movement at the trunk and hip during various motor tasks including common training exercises;Andersson,1994
3. The role of the psoas and iliacus muscles for stability and movement of the lumbar spine, pelvis and hip;Andersson;Scand J Med Sci Sports,1995
4. Observations on intra-abdominal pressure and patterns of abdominal intra-muscular activity in man;Cresswell;Acta Physiol Scand,1992
5. On the regulation of intra-abdominal pressure during different motor tasks;Cresswell,1993