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