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- Title
How Back-Muscle Fatigue Influences Lumbar Curvature.
- Authors
Takihara, Yukio; Urabe, Yukio; Nishiwaki, Gaston Ariel; Tanaka, Kosuke; Miyashita, Koji
- Abstract
Context: Back-muscle fatigue and lumbar curvature are related to low back pain, but the relation between them is unknown. Objective: To clarify whether lumbar curvature changes with back-muscle fatigue. Design: Prospective pseudorandomized. Setting: Laboratory. Participants: 13 healthy men without low back pain. Intervention: To induce back-muscle fatigue, subjects performed a repetitive prone back-extension exercise from 45° to 0° until exhaustion and then rested 10 min. They performed this exercise 3 times. Main Outcome Measures: Before the trial and after each exercise, lumbar curvature was measured with a Spinal Mouse. Results: After back-muscle fatigue, lumbar curvature decreased significantly (P < .01). This decrease occurred at L4-S1, which was defined as the lower spine. On the contrary, curvature of the upper lumbar spine, at Th12-L4, did not decrease. Conclusion: Lumbar curvature, especially the lower portion, decreased with back-muscle fatigue induced by prone back-extension exercise.
- Subjects
FATIGUE (Physiology); LUMBAR pain; LUMBAR vertebrae; MUSCLE strength; EXERCISE therapy; BACK exercises
- Publication
Journal of Sport Rehabilitation, 2009, Vol 18, Issue 2, p327
- ISSN
1056-6716
- Publication type
Article
- DOI
10.1123/jsr.18.2.327