Effects of Somatothermal Far-Infrared Ray on Primary Dysmenorrhea: A Pilot Study

<table>The average increases in temperature after wearing the control belt and FIR belt. The symbol ** indicates a highly significant difference between groups using the Wilcoxon Signed-Rank Test.</table>

Evidence-Based Complementary and Alternative Medicine

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Figure 3

Figure 3: Effects of Somatothermal Far-Infrared Ray on Primary Dysmenorrhea: A Pilot Study 