Pinto, Rafael Zambelli The effect of lumbar posture on abdominal muscle thickness during an isometric leg task in people with and without non-specific low back pain. [electronic resource] - Manual therapy Dec 2011 - 578-84 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1532-2769 Standard No.: 10.1016/j.math.2011.05.010 doi Subjects--Topical Terms: Abdominal Muscles--anatomy & histologyAdultAnalysis of VarianceCase-Control StudiesConfidence IntervalsExercise Test--methodsFemaleHumansIsometric Contraction--physiologyLow Back Pain--diagnostic imagingLumbosacral RegionMaleMiddle AgedPain MeasurementPosture--physiologyReference ValuesSeverity of Illness IndexUltrasonography