erector spinae muscles


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e·rec·tor spi·nae mus·cles

, erector muscle of spine (ĕ-rek'tŏr spī'nē mŭs'ĕlz, mŭs'ĕl spīn)
Origin, from sacrum, ilium, and spines of lumbar vertebrae; it divides into three columns, iliocostalis muscle, longissimus muscle, and spinalis muscle, which insert into ribs and vertebrae with additional muscle slips joining the columns at successively higher levels; action, extends vertebral column; nerve supply, dorsal primary rami of spinal nerves.
Synonym(s): musculus erector spinae [TA] .
References in periodicals archive ?
The lumbar region is bordered superiorly by the 12th rib inferiorly by the iliac crest, medially by the erector spinae muscles and laterally by the external oblique muscle.
2009) and Sung (2013) stated that the average electromyography (EMG) frequency of the thoracic part of the erector spinae muscles of patients with chronic low back pain is significantly lower with respect to the lumbar part than that of healthy individuals with no chronic low back pain.
With exception of the erector spinae muscles, the "Healthy" group showed the lowest mean muscle activity, although not significantly.
To reduce tension on iliopsoas bachward through erector spinae muscles causes muscle fatigueness.
Another important aspect refers to the fact that the postural attitude is not conditioned only by the muscle tone, the ligament strength and the erector spinae muscles, but also by the human being's personality, that is why it was called the "psychic drive".
Kyphotic deformity develops at the site of the spinal dysraphism as a result of the lateralised erector spinae muscles becoming perverted flexors of the spine.
Being careful to avoid the vertebrae, roll the ball up and down the erector spinae muscles that run along the sides of the spine while pressing into the wall at the same time.
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.
Also, dancers can palpate the relevant muscle groups themselves; for instance, on initiation of a tendu to the rear feeling for correct recruitment of the inferior fibers of gluteus maximus and the deep external rotators, while the erector spinae muscles stay relatively relaxed.
Low back - the erector spinae muscles extend the back and aid in good posture.