(a)
(b)
(c)
Figure 4: (a) Changes in LHR at different stages of treatment for subjects undergoing four kinds of therapies. LHR: low frequency power to high frequency power ratio; FIR: far-infrared radiation. at stage 2 versus stage 1 for subjects receiving acupuncture-FIR combined treatment; at stage 3 versus stage 1 for subjects undergoing pseudoacupuncture. Significance of difference determined by paired -test. (b) Comparison of changes in LHR between pseudoacupuncture and acupuncture treatment. determined with post hoc test; (c) comparison of changes in LHR between pseudoacupuncture and combined acupuncture-FIR treatment. determined with post hoc test.