Please select the eligibility criteria that correspond to the clinical trial below.
Title: Randomized Controlled Trial of Stabilizing Exercises and Effect on Anticipatory Muscle Control in Patients With Subacute and Chronic Low Back Pain
Brief Summary: Muscular stability is essential to the spinal column to avoid harmful strain and injury to its structures. Sudden postural disturbances impose reactive internal forces through the spine. If the muscles do not react before the internal reactive forces propagate through the spine, there is a short fraction of time where the spinal column may lack sufficient muscular support. Studies have shown that in patients with low back pain deep abdominal and back muscle have a delayed response to reactive forces. The purpose of this study is to verify these findings and to investigate whether tailored interventions can improve the reaction time in stabilizing muscle around the lower spinal column i patients with subacute and chronic low back pain.


Options:
A: Inclusion Criteria:

* Unspecific subacute, subacute remitting and chronic LBP
* Both sexes, 20-60 yrs of age
* LBP between 2-8 on a 11-pt numeric rating scale

Exclusion Criteria:

* Previous back surgery
* Sick listed more than one year
* Radiating pain below knee or motor deficits
* Systemic diseases and "red flags"
* Diagnosed psychiatric disease
* Ingoing insurance claim
* Pregnancy
B: Inclusion Criteria:

1. Low Back Pain lasting more than 12 weeks with or with out pain radiating into the leg(s)
2. Age 18 - 60 years

Exclusion Criteria:

1. Serious spinal pathology

   1. Malignancy
   2. Osteoporosis,
   3. Fresh vertebral fracture
   4. Newly operation on the back
   5. Stenosis of the lumbar spine
   6. Unstable spondylolistesis
   7. Infections in the back
2. Neurological dysfunction of the thoracic or abdominal muscles
3. Pregnancy/breastfeeding
4. Mental illness
5. Health conditions which prohibit intensive training.
6. Languish problems/ dyslexia
C: Inclusion Criteria: patients are 18-65 years of age; Québec task force classification 1,2,3 and 4 (this includes patients with back pain, stiffness or tenderness, with or without musculoskeletal signs and neurological signs); primary complaint of back pain, with current episode greater than or equal to six weeks duration(this includes subacute and chronic patients for whom the study treatments are an option)

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Exclusion Criteria:

* previous lumbar spine surgery; back pain referred from local joint lesions of the lower extremities or from visceral diseases; progressive neurological deficits due to nerve root or spinal cord compression; aortic and peripheral vascular disease; existing cardiac disease requiring medical treatment; blood clotting disorders; diffuse idiopathic hyperostosis; infectious and noninfectious inflammatory or destructive tissue changes of the lumbar spine; presence of significant infectious disease, or other severe debilitating health problems; substance abuse; ongoing treatment for back pain by other health care providers; pregnant or nursing women; pain score of less than 30 percentage points; pending our current litigation
D: Inclusion Criteria:

* Patients with non-specific chronic low back pain for at least three months, age between 18 and 65 year of both genders and with a minimum pain intensity score of three in the 11-point Pain Numerical Rating Scale (ranging from 0 to 10 points).

Exclusion Criteria:

* Known or suspected serious spinal pathology (fractures, tumors, inflammatory or infective diseases of the spine);

  * Nerve root compromise;
  * Comorbid health conditions that would prevent active participation in the exercise programs;
  * Pregnancy;
  * Cardio Respiratory illnesses;

Answer: A