erector spinae muscle


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Related to erector spinae muscle: Spinalis muscle

erector spinae muscle

Three adjacent vertical bands of deep back muscles -- the iliocostalis, longissimus, and spinalis muscles. Origins: a wide tendon running along the iliac crest to the sacrum, the lower lumbar and sacral spinous processes. Insertions: along the back in the angles of the lower ribs, transverse processes of the thoracic and cervical vertebrae. Nerves: dorsal rami of the spinal nerves. Actions: extends (bends backward) the vertebral column and neck, twists the back.
See also: muscle
References in periodicals archive ?
2009; 2013) showed that patients with the chronic low back pain have lower average EMG frequencies in the thoracic part of the erector spinae muscles compared with the lumbar part.
Figure 3A shows an example of a person initiating a lift with a lordotic posture (40% of maximal flexion) and the rate of change in lumbosacral angle (angular velocity) and the extent of erector spinae muscle activation.
The lifting belt reduced the peak normalized EMG of th e erector spinae muscles on average by 3% during asymmetric loading, though peak normalized EMG was increased by 2% during symmetric loading.
EMG activity of the erector spinae muscles were significantly less activated under the "familiar" condition and trapezius and biceps brachii activation was similar between the experimental conditions.
The most recently injured LBP group, on the other hand, had the same percentage of participants as the "Healthy" group developing fatigue in the erector spinae muscles (70%), but showed the lowest percentage of fatigue development for gastrocnemius and rectus femoris.
2,5,8) Golfers who have low back pain demonstrate earlier activation (before backswing commences) and less activity of the erector spinae muscles, as well as well as a delay to the onset time in the external obliques with the start of the back swing and a delay and decreased endurance capacity in transverses abdominus activation.
Back extension: Working the erector spinae muscles of the lower back.
We compared electromyography (EMG) signals of the thoracic and lumbar erector spinae muscles between the entropy of the EMG signals and the power spectrum analysis.
Low back - the erector spinae muscles extend the back and aid in good posture.
Low-back machine -- isolating the trunk extensor muscles to strengthen the erector spinae muscles that improve posture and the ability to sit on the edge of the bed or the commode.
Back pain is associated with weak abdominal and erector spinae muscles.