dc.contributor.author |
Bishop, Mark D |
|
dc.contributor.author |
Horn, Maggie E |
|
dc.contributor.author |
Lott, Donovan J |
|
dc.contributor.author |
Arpan, Ishu |
|
dc.contributor.author |
George, Steven Z |
|
dc.coverage.spatial |
United States |
|
dc.date.accessioned |
2016-09-14T14:24:40Z |
|
dc.date.issued |
2011-12 |
|
dc.identifier |
http://www.ncbi.nlm.nih.gov/pubmed/22208857 |
|
dc.identifier |
S1529-9430(11)01397-0 |
|
dc.identifier.uri |
https://hdl.handle.net/10161/12765 |
|
dc.description.abstract |
BACKGROUND CONTEXT: Findings on imaging of noncontractile anatomic abnormalities and
the intensity of low back pain have weak associations because of false-positive rates
among asymptomatic individuals. This association might be stronger for contractile
tissues. PURPOSE: The purpose of this study was to examine the relationship between
location and reports of pain intensity in the low back and exercise-induced muscle
damage to the lumbar paraspinal muscles. STUDY DESIGN: Nondiagnostic observational
study in a laboratory setting. METHODS: Delayed onset muscle soreness was induced
in the low back of healthy pain-free volunteers. Measures of pain intensity (100-mm
visual analog scale [VAS]) and location (area on the pain diagram) were taken before
and 48 hours after exercise. Muscle damage was quantified using mechanical pain thresholds,
motor performance deficits, and transverse relaxation time (T2)-weighted magnetic
resonance imaging (MRI). Changes pre- to postexercise in signal intensity on T2-weighted
imaging within the erector spinae, pain intensity, pain area, mechanical pain threshold,
and isometric torque were assessed using paired t tests. Bivariate correlations were
conducted to assess associations among muscle damage, pain intensity, and pain drawing
area. RESULTS: Twenty participants volunteered (11 women; average age, 22.3 years;
average body mass index, 23.5) for study participation. Reports of pain intensity
at 48 hours ranged from 0 to 59 mm on the VAS. Muscle damage was confirmed by reductions
in mechanical threshold (p=.011) and motor performance (p<.001) and by changes in
T2-weighted MRI (p=.007). This study was powered to find an association of at least
r=0.5 to be statistically significant. Correlations of continuous variables revealed
no significant correlations between pain intensity and measures of muscle damage (ranging
between -0.075 and 0.151). There was a significant association between the remaining
torque deficit at 48 hours and pain area. CONCLUSIONS: The results of this study indicate
that there was no association between the magnitude of muscle damage in the lumbar
erector spinae and reported pain intensity in the low back. In future studies, larger
cohorts may report statistically significant associations, but our data suggest that
there will be low magnitude potentially indicating limited clinical relevance.
|
|
dc.language |
eng |
|
dc.publisher |
Elsevier BV |
|
dc.relation.ispartof |
Spine J |
|
dc.relation.isversionof |
10.1016/j.spinee.2011.11.005 |
|
dc.subject |
Exercise |
|
dc.subject |
Exercise Test |
|
dc.subject |
Exercise Tolerance |
|
dc.subject |
Female |
|
dc.subject |
Humans |
|
dc.subject |
Low Back Pain |
|
dc.subject |
Magnetic Resonance Imaging |
|
dc.subject |
Male |
|
dc.subject |
Muscle Contraction |
|
dc.subject |
Muscle Fatigue |
|
dc.subject |
Muscle, Skeletal |
|
dc.subject |
Musculoskeletal Pain |
|
dc.subject |
Pain Measurement |
|
dc.subject |
Spine |
|
dc.subject |
Young Adult |
|
dc.title |
Magnitude of spinal muscle damage is not statistically associated with exercise-induced
low back pain intensity.
|
|
dc.type |
Journal article |
|
duke.contributor.id |
Horn, Maggie E|0724263 |
|
duke.contributor.id |
George, Steven Z|0718420 |
|
pubs.author-url |
http://www.ncbi.nlm.nih.gov/pubmed/22208857 |
|
pubs.begin-page |
1135 |
|
pubs.end-page |
1142 |
|
pubs.issue |
12 |
|
pubs.organisational-group |
Clinical Science Departments |
|
pubs.organisational-group |
Duke |
|
pubs.organisational-group |
Duke Clinical Research Institute |
|
pubs.organisational-group |
Institutes and Centers |
|
pubs.organisational-group |
Orthopaedics |
|
pubs.organisational-group |
Orthopaedics, Physical Therapy |
|
pubs.organisational-group |
School of Medicine |
|
pubs.publication-status |
Published |
|
pubs.volume |
11 |
|
dc.identifier.eissn |
1878-1632 |
|