Sökning: "lumbar extensor muscles"

Hittade 4 avhandlingar innehållade orden lumbar extensor muscles.

1. 1. Lumbar muscle fatigue : analysis of electromyography, endurance time and subjective factors in patients with lumbar disc herniation and healthy subjects

   Författare :Åsa Dedering; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Disability; electromyography; endurance; gender; healthy subjects; lumbar disc herniation; lumbar extensor muscles; muscle fatigue; non-linear regression; recovery; subjective ratings;

   Sammanfattning : The overall aim of the thesis was to investigate the relation between objectively and subjectively assessed lumbar muscle fatigue and subjective factors in patients with lumbar disc herniation and in healthy subjects. Eighty healthy subjects and 43 patients undergoing surgery for lumbar disc herniation and selected consecutively for the study participated. LÄS MER

3. 2. Biomechanics of back extension torque production about the lumbar spine

   Författare :Karl Daggfeldt; Gymnastik- och idrottshögskolan; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Medicin Teknik;

   Sammanfattning : The aim of this thesis has been to develop a realistic mechanical description of lumbar back extension torque production. Such a description is desirable for understanding how back extension torque is generated as well as how the spine and surrounding structures are loaded during back extension tasks. LÄS MER

4. 3. Lumbar muscle fatigue and recovery : evaluation of electromyography in patients with long-term low-back pain and in healthy subjects

   Författare :Britt Elfving; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Disability; electromyography; exponential; force level; gender; healthy subjects; interelectrode distance; low-back pain; erector spinae; maximal voluntary contraction; muscle fatigue; recovery; reliability; validity.;

   Sammanfattning : Background: Lumbar muscle function is considered to be an important component of longterm low- back pain. The change in the median frequency of the power spectrum of the electromyographic (EMG) signal is commonly used to estimate muscle fatigue. LÄS MER

5. 4. Idiopathic scoliosis : radiographic, neurophysiologic and psychologic aspects

   Författare :Yngvi Ólafsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :idiopathic scoliosis; brace treatment; back surface analysis; self-image; somatosensory testing;

   Sammanfattning : The aim of this thesis was to study brace treatment outcome, the brace effect on electromyographic muscle responses and self image, possible occurrence of somatosensory dysfunction and the descriptive power of surface topography contra radiography, in idiopathic scoliosis. There were 64 patients in a retrospective 4. LÄS MER