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RANDOMIZED CONTROLLED TRIAL
Gladys L Y Cheing, Amy Y Y Tsui, Sing Kai Lo, Christina W Y Hui-Chan
OBJECTIVE: This study examined the optimal stimulation duration of transcutaneous electrical nerve stimulation (TENS) for relieving osteoarthritic knee pain and the duration (as measured by half-life) of post-stimulation analgesia. SUBJECTS: Thirty-eight patients received either: (i) 20 minutes (TENS20); (ii) 40 minutes (TENS40); (iii) 60 minutes (TENS60) of TENS; or (iv) 60 minutes of placebo TENS (TENS(PL)) 5 days a week for 2 weeks. METHODS: A visual analogue scale recorded the magnitude and pain relief period for up to 10 hours after stimulation...
March 2003: Journal of Rehabilitation Medicine
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