(2002) Differences in electromyographic activity in the multifidus muscle and the iliocostalis
lumborum between healty subject and patiens with sub-acute and chronic low back pain.
Differences in electromyographic activity in the multifidus muscle and the iliocostalis
lumborum between healthy subjects and patients with sub-acute and chronic low back pain.
This group primarily includes the poly segmental muscles--the lumbar components of longissimus and iliocostalis
, and multifidus (Bogduk and Twomey 1987), and are often termed the lumbar erector spinae.
Extension in the lumbar spine is produced by the superficial erector spinae muscle group, longissimus thoracis pars lumborum and iliocostalis
lumborum pars lumborum, and by the superficial fibers of the multifidi muscles.
Low back muscles: The erector spinae group (spinalis longissimus and iliocostalis
), the transversospinalis group (multifidi, rotators, and semispinalis), and the quadratus lumborum, comprise the posterior extrinsic and intrinsic support groups.
The dependent measures were the trunk kinematics as measured with the Lumbar Motion Monitor (LMM; Chattanooga Corp., Chattanooga, TN) and the normalized surface electromyography (EMG) from the left and right longissimus thoracis (LGT), erector spinae (e.g., iliocostalis
, or ERS), external oblique (EXO), and the rectus abdominus (RAB).
 Longissimus thoracis, iliocostalis
lumborum, and multifidus Seroussi and Pope  Erector spinae and external oblique Lumbar erector spinae, thoracic Graham et al.
Estimation of beef marbling in the Longissimus muscle with computer image analysis ultrasonic pictures of the Iliocostalis
Similarly, a very small increase (1-3% of maximal voluntary contraction) in lumbar multifidus, iliocostalis
and thoracic longissimus muscle activity at [L.sub.2]-[L.sub.4] is sufficient to restore segmental stability of the lumbar spine even when the loading moments are increased to 75% of body weight.
La leve orientacion caudal de los procesos transversos, observada en todos los filotinos, indicaria una accion restringida de los musculos que se insertan en esta estructura (Mm longissimus cervicis, scalenus, iliocostalis
y levator scapulae dorsalis) y que participan en la extension y flexion del cuello (Argot, 2003).
(1997) demonstrated that the multifidus has more activity than the iliocostalis
lumborum during Biering-Sorensen testing.
Although some authors do mention the presence of lumbar muscles and fascia, specifi cally the quadratus lumborum, multifi dus and iliocostalis
lumborum (Collee et al., 1991; Chaitow and Delany 2000), the relevance of these structures to palpation of the ligament was not discussed.