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Do patients with chronic low back pain have a lower level of aerobic fitness than healthy controls?: are pain, disability, fear of injury, working status, or level of leisure time activity associated with the difference in aerobic fitness level?
Smeets RJ, Wittink H, Hidding A, Knottnerus JA. Smeets RJ, et al. Among authors: knottnerus ja. Spine (Phila Pa 1976). 2006 Jan 1;31(1):90-7; discussion 98. doi: 10.1097/01.brs.0000192641.22003.83. Spine (Phila Pa 1976). 2006. PMID: 16395183
Active rehabilitation for chronic low back pain: cognitive-behavioral, physical, or both? First direct post-treatment results from a randomized controlled trial [ISRCTN22714229].
Smeets RJ, Vlaeyen JW, Hidding A, Kester AD, van der Heijden GJ, van Geel AC, Knottnerus JA. Smeets RJ, et al. Among authors: knottnerus ja. BMC Musculoskelet Disord. 2006 Jan 20;7:5. doi: 10.1186/1471-2474-7-5. BMC Musculoskelet Disord. 2006. PMID: 16426449 Free PMC article. Clinical Trial.
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