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Open AccessArticle

A Parallel-Arm Randomized Controlled Trial to Assess the Effects of a Far-Infrared-Emitting Collar on Neck Disorder

Department of Chemical Engineering, National United University, Miaoli 36063, Taiwan
Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei 11696, Taiwan
Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei 11031, Taiwan
Department of Biomedical Engineering, Hungkuang University, Taichung 43302, Taiwan
Department of Biological Science and Technology, I-Shou University, Kaohsiung 82445, Taiwan
The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung 82445, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Christof Schneider
Materials 2015, 8(9), 5862-5876;
Received: 16 June 2015 / Revised: 8 August 2015 / Accepted: 27 August 2015 / Published: 1 September 2015
(This article belongs to the Section Energy Materials)
The purpose of this study is to assess the beneficial effects of a far-infrared-emitting collar (FIRC) on the management of neck disorders. A neck disorder is generalized as neck muscle pain and its relative mental disorders because the etiologies of the neck’s multidimensional syndrome are either muscle impairment or psychiatric distress. This is the first study to determine the efficacy of a FIRC by evaluating objective physical evidence and psychometric self-reports using a parallel-arm randomized sham-controlled and single-blinded design. In this trial, 60 participants with neck disorders were observed at baseline and post-intervention. Compared to the placebo group after a 30-min intervention, the FIRC demonstrated a statistically significant biological effect in elevating skin temperature and promoting blood circulation with p-values 0.003 and 0.020, respectively. In addition, FIRC application significantly reduced neck muscle tension, relieved pain, ameliorated fatigue, improved depression, and decreased anxiety. The FIRC could therefore be a potential treatment for neck disorders. View Full-Text
Keywords: far-infrared ray; collar; neck; pain far-infrared ray; collar; neck; pain
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Lin, Y.-S.; Hung, K.-S.; Liau, B.-Y.; Yang, C.-H.; Yang, A.; Huang, K.-S. A Parallel-Arm Randomized Controlled Trial to Assess the Effects of a Far-Infrared-Emitting Collar on Neck Disorder. Materials 2015, 8, 5862-5876.

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