Clark, Brian C Electromyographic activity of the lumbar and hip extensors during dynamic trunk extension exercise. [electronic resource] - Archives of physical medicine and rehabilitation Nov 2002 - 1547-52 p. digital Publication Type: Journal Article ISSN: 0003-9993 Standard No.: 10.1053/apmr.2002.34828 doi Subjects--Topical Terms: AdultBack--physiologyButtocks--physiologyElectromyographyExercise--physiologyExercise Therapy--methodsFemaleHip--physiologyHumansIsometric Contraction--physiologyLow Back Pain--etiologyLumbosacral Region--physiologyMaleMuscle, Skeletal--physiologyThigh--physiologyWeight-Bearing