Relationship between the movements of lumbar spine and hip

relationship between the movements of lumbar spine and hip

Because motion of the spine, This same stiff spine can force the femoral side of the hip to flex more with sitting, a result of the lumbar spine tilting into. Relative angles between adjacent sensors were used to quantify the motion for the hip, LL, and upper lumbar spine. Pearson correlation coefficients were used. spine and the hip joint, as they are connected via the pelvis. However, the relationship between hip position and lumbar spine range of motion (ROM) is not yet.

relationship between the movements of lumbar spine and hip

Movements in the opposite directions were represented by negative values. Procedure Each participant was seated on a stool with neither armrest nor backrest. The stool provided support from the ischial tuberosities to the middle of the thighs.

Relationship between the movements of the lumbar spine and hip.

Subjects started in an erect seated posture looking directly forward, with the lumbar spine in neutral and the hips flexed and their arms hanging freely. They were requested to perform the reaching activities at their own preferred, comfortable speed while remaining seated. The right hand was used to pick up the objects on both sides, and thus the two reaching activities ipsilateral and contralateral represented two different sets of movements.

To ensure the activity was as natural as possible, there was no attempt to correct any deviations during the test. All movements were first demonstrated to participants, and each subject performed the action three times for each side. The order of testing was randomized. Data analysis Kinematic analysis Movements of the lumbar spine and hips, including maximum displacement and velocity were determined.

The coefficient of multiple correlation CMC [ 18 ] was calculated to determine the repeatability of the three sets of angle—time curves. The root mean square error of the angle data was also calculated.

Relationship between the movements of the lumbar spine and hip.

The mean and standard deviation of the maximum range in each plane of movement and the ratio of the total movement of the lumbar spine to that of the moving hip were determined for each subject. The consistency of data for each variable over the three trials within each subject was determined using intra-class correlations, ICC 2, 1.

relationship between the movements of lumbar spine and hip

Coordination Cross-correlation analysis, a standard method of establishing the extent of association between two sets of time series data, was applied to the three movement cycles of the lumbar spine and hips [ 20 ].

The peak correlation coefficient indicates the strength of correlation of the movements, and the phase relationship determines the time lag or lead for peak cross-correlation.

relationship between the movements of lumbar spine and hip

In the present analysis, lumbar movement was used as the reference and a positive phase relationship implies that the lumbar spine moved earlier than the hip in the movement cycle. Post hoc least significant difference LSD test was used and the alpha level was set at 0.

The mean CMC for the movement-time curves was found to be 0. This demonstrated that the movement pattern among the three trials were very similar in shape. Hip and Lumbar Spine angle in relation to Pelvis movement When the pelvis undergoes a movement, the hip and lumbar spine angle changes accordingly.

This causes hip flexion and increases lumbar spine extension hyperextension. The muscles that cause this motion are the Hip Flexors and the Back Extensors.

relationship between the movements of lumbar spine and hip

When standing, the line of gravity of the trunk falls anterior to the axis of the hip joints, causing an anterior pelvis tilt. The Abdominals and the Hip Extensor muscles provide stability.

Hip and Lumbar Spine angle in relation to Pelvis movement

This causes hip extension and lumbar spine flexion. The muscles that cause this motion are the Hip Extensors and the Trunk Flexors. When standing, the line of gravity of the trunk falls posteriorly to the axis of the hip joints, causing posterior pelvis tilt.

The Hip Flexors and Back Extensors provide dynamic stability, and the Iliofemoral Ligament provides passive stability. Lateral Pelvis Tilt When one side of the hip is higher than the other hip hikingadduction occurs on that side. On the side that is lower hip dropabduction occurs.

relationship between the movements of lumbar spine and hip

In a standing position, the lumbar spine flexes laterally towards the side that is elevated. The muscles that are causing lateral pelvis tilt include the Quadratus Lumborum on the elevated side, and the Gluteus Medius on the lower side which acts in a reverse muscle pull down.