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A consistent coordination between knee, hip, and lumbar vertebral joints during lifting was described through calculation of the relative phase between adjacent joints and found to be exaggerated with increases in load mass. During the early phase of lifting, knee extension leads hip extension, which in turn leads extension of the lumbar vertebral joints. Early in the lifting movement, when load acceleration is greatest, the erectores spinae are thus relatively long and shortening slowly. Both of these factors produce greater back extensor strength. Rapid hamstring shortening is also delayed, which enhances their strength, and coactivation of the monoarticular knee extensors and biarticular hamstrings observed early in the lifting movement suggested that the knee extensors contribute to hip extension through a tendinous action of the hamstrings.<\/jats:p>","DOI":"10.1518\/001872095779064537","type":"journal-article","created":{"date-parts":[[2006,12,6]],"date-time":"2006-12-06T17:53:03Z","timestamp":1165427583000},"page":"395-411","source":"Crossref","is-referenced-by-count":63,"title":["Self-Selected Manual Lifting Technique: Functional Consequences of the Interjoint Coordination"],"prefix":"10.1177","volume":"37","author":[{"given":"Robin","family":"Burgess-Limerick","sequence":"first","affiliation":[{"name":"University of Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruce","family":"Abernethy","sequence":"additional","affiliation":[{"name":"University of Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert J.","family":"Neal","sequence":"additional","affiliation":[{"name":"University of Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vaughan","family":"Kippers","sequence":"additional","affiliation":[{"name":"University of Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1995,6,1]]},"reference":[{"key":"atypb1","volume-title":"Manual materials handling","author":"Ayoub, M. 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