HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when Rapid Responses are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Youdas, J. W Articles by Therneau, T. M Search for Related Content PubMed PubMed Citation Articles by Youdas, J. W Articles by Therneau, T. M Related Collections Kinesiology/Biomechanics Injuries and Conditions: Knee Social Bookmarking                      What's this?

Lumbar Lordosis and Pelvic Inclination in Adults With Chronic Low Back Pain

JW Youdas, PT, MS, is Physical Therapist, Physical Therapy Program, Mayo School of Health-Related Sciences, and Assistant Professor of Physical Therapy, Mayo Medical School, Rochester, Minn. Address all correspondence to Mr Youdas at Mayo Clinic, 200 First St SW, Rochester, MN 55905 (USA) (youdas.james{at}mayo.edu)
TR Garrett, PT, BA, is Physical Therapist, Physical Therapy Program, Mayo School of Health-Related Sciences, and Assistant Professor of Physical Therapy, Mayo Medical School
KS Egan, MPhil, is Statistician, Department of Health Sciences Research, Mayo Clinic and Mayo Foundation
TM Therneau, PhD, is Consultant, Department of Health Sciences Research, Mayo Clinic and Mayo Foundation, and Associate Professor of Biostatistics, Mayo Medical School

Background and Purpose. The causes of lumbopelvic imbalances in standing have been widely accepted by physical therapists, but there is a lack of scientific evidence available to support them. We examined the association between 9 variables and pelvic inclination and lumbar lordosis during relaxed standing. Subjects. Thirty men and 30 women with chronic low back pain (CLBP) for at least 4 months were examined (mean age=54.9 years, SD=9, range=40.4–69.8). Methods. Multiple linear regression modeling was used to assess the association of pelvic inclination and the magnitude of lumbar lordosis in standing with age, sex, body mass index (BMI), Oswestry Back Pain Disability Questionnaire (ODQ) scores, physical activity level, hip flexor muscle length, abdominal muscle force, and range of motion (ROM) for lumbar flexion and extension. Results. In women, age, BMI, and ODQ scores were associated univariately and multivariately with pelvic inclination. In men, lumbar extension ROM was related univariately to pelvic inclination; age, lumbar extension ROM, and ODQ scores were associated multivariately. Lumbar lordosis was associated univariately with only lumbar extension ROM for women and men. A weak correlation was found between angle of pelvic inclination and magnitude of lumbar lordosis in standing (r=.31 for women, r=.37 for men). Conclusion and Discussion. The odds ratio of having CLBP is increased if the score on the double-leg lowering test for abdominal muscles exceeds 50 degrees for men and 60 degrees for women. In patients with CLBP, the magnitude of the lumbar lordosis and pelvic inclination in standing is not associated with the force production of the abdominal muscles.

Key Words: Chronic low back pain • Kinesiology/biomechanics • Lumbar spine mobility • Muscle performance

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				M. J Mueller and K. S Maluf Tissue Adaptation to Physical Stress: A Proposed "Physical Stress Theory" to Guide Physical Therapist Practice, Education, and Research Physical Therapy, April 1, 2002; 82(4): 383 - 403. [Abstract] [Full Text] [PDF]