Skip to main content

Table 2 Operational definitions of clinically observed typical and aberrant movement patterns during a standing forward bend and return motion

From: Kinematic characterization of clinically observed aberrant movement patterns in patients with non-specific low back pain: a cross-sectional study

Movement pattern type Operational definition
Typical During the forward bend phase, hip and lumbar spine motion occur simultaneously with lumbar spine motion predominating in the first 1/3rd and hip motion predominating in the last 1/3rd of the movement. During the return to upright phase, hip and lumbar spine motion occur simultaneously with hip motion predominating in the first 1/3rd and lumbar spine motion predominating in the last 1/3rd of the movement. Movement should be smooth (gradual increase and decrease in velocity) and remain in the sagittal plane.
Altered lumbopelvic rhythm (aLPR) During the forward bend phase, hip motion is greater than lumbar spine motion during the first 1/3rd and/or lumbar motion greater than hip motion during the last 1/3rd of the movement, or during return to an upright position, lumbar spine motion is greater than hip motion during the first 1/3rd and/or hip motion greater than lumbar spine motion during the last 1/3rd of the movement.
Judder (JUD) Observation of a sudden deceleration and acceleration, or quick out of sagittal plane movements during trunk forward bending or return.