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Increase in muscle nociceptive substances and anaerobic metabolism in patients with trapezius myalgia: microdialysis in rest and during exercise

Tidsskriftartikel - 2004

Resume

AbstractLocal metabolic changes are suggested to be involved in muscle pain development in humans. Nineteen women with chronic work-related trapezius myalgia (TM) and 20 healthy female controls (CON) were studied during baseline rest, 20 min repetitive low-force exercise, and 120 min recovery. Interstitial serotonin (5-HT), glutamate, lactate, pyruvate, and blood flow were determined by microdialysis in the trapezius muscle. Baseline pressure pain threshold (PPT) was lower (143±18 (TM) vs. 269±17 (CON) kPa) (mean±SEM), pain intensity (visual analogue scale, VAS) higher (33±5 vs. 2±1 mm), muscle 5-HT higher (22.9±6.7 vs. 3.8±1.3 nmol/l), and glutamate higher (47±3 vs. 36±4 µmol/l) in TM than in CON (all P

Reference

Rosendal L, Larsson B, Kristiansen J, Peolsson M, Søgaard K, Kjær M, Sørensen J, Gerdle B. Increase in muscle nociceptive substances and anaerobic metabolism in patients with trapezius myalgia: microdialysis in rest and during exercise. Pain 2004;112:324-334.
doi: 10.1016/j.pain.2004.09.017

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