Measuring Deep and Superficial Multifidus and the Activation Pattern During Dynamic Task Correlating With Trunk Stability Ability and Functional Performance in Different Ages Asymptomatic and Unspecific Low Back Pain Adult

Measuring Deep and Superficial Multifidus and the Activation Pattern During Dynamic Task Correlating With Trunk Stability Ability and Functional Performance in Different Ages Asymptomatic and Unspecific Low Back Pain Adult

The first propose of the study is to understand the contraction of deep and superficial multifidus in patients with non-specific low back pain and the elderly. The second purpose of the study is to understand the relationship between the multifidus and the functional performance in patients with non-specific low back pain and the elderly. The hypothesis is that the patients with non-specific low back pain and the elderly have less ability to contract the deep multifidus then asymptomatic adults and younger adults. Besides, the multifidus is correlated to the functional performance.

Inclusion Criteria:

• age 20-90
• have lumbar region discomfort in the past three months, and the discomfort is more than one day
• have diagnosis of non-specific low back pain

Exclusion Criteria:

• have received surgery of lumbar or lower extremities
• neurological symptom (eg. numbness of lower extremities)
• have no ability to stand and walking independently
• cancer
• systemic disease (eg. ankylosing spondylitis, rheumatoid arthritis, Systemic lupus erythematosus)
• pregnancy