title: [The role of coactivation of the trunk musculature in evaluating biomechanical risk].
abstract: One of the mechanisms adopted by the central nervous system to stabilize the joints or the spine is muscle co-activation. Nevertheless during lifting tasks muscle co-activation increases spinal load. For co-activation assessment during 3 lifting tasks at increasing load levels we utilized a time-varying co-activation algorithm proposed by Rudolph in 2000. We found that Rudolph co-activation index grew with lifting index. The time-varying co-activation index gave a continuous measure of low back compression. A time-varying co-activation index could be of great interest in all conditions in which NIOSH equation is not applicable.
authors.affiliation: Dipartimento di Medicina de Lavoro, INAIL, Roma
authors.forename: Alberto
authors.initials: A
authors.lastname: Ranavolo
authors.forename: Silvia
authors.initials: S
authors.lastname: Mari
authors.forename: Carmela
authors.initials: C
authors.lastname: Conte
authors.forename: Mariano
authors.initials: M
authors.lastname: Serrao
authors.forename: Alessio
authors.initials: A
authors.lastname: Silvetti
authors.forename: Sergio
authors.initials: S
authors.lastname: Iavicoli
authors.forename: Francesco
authors.initials: F
authors.lastname: Draicchio
mesh_terms: D000328:Adult; D064131:Back Muscles / Q000502:physiology; D001696:Biomechanical Phenomena; D004576:Electromyography; D006801:Humans; D017770:Lifting / Q000009:adverse effects*; D008161:Lumbosacral Region; D008297:Male; D009119:Muscle Contraction; D018482:Muscle, Skeletal / Q000502:physiology*; D009784:Occupational Diseases / Q000453:epidemiology* / Q000209:etiology / Q000503:physiopathology; D018570:Risk Assessment; D013314:Stress, Mechanical; D060726:Torso / Q000502:physiology*