Effect of Low-frequency Electroacupuncture (EA) on Polycystic Ovary Syndrome

Disposable, single-use, sterilized needles made of stainless steel, 0.25 x 30 mm and 0.30 x 40/50mm (Wuxi Jiajian Medical Instrument. 251226 Wuxi, China) will be inserted to a depth of 15-35 mm in some acupoints. After getting the needle sensation (de qi), some acupoints will receive electrical stimulation and the others will receive manual stimulation. All participants will receive treatment twice a week; each treatment session can be separated by an interval of 2-4 days, with a maximum of 32 treatment sessions during 16 weeks. Each treatment session lasts for 30 minutes.

Disposable, single-use, sterilized needles (0.20 x 20mm) made of stainless steel will be inserted to a depth of \<5 mm at non-acupoints without evoking the needle sensation (Deqi). Electrodes will be attached to the needles and the stimulator will be turned on at an intensity of zero (no active current) in order to mimic EA in the acupuncture protocol 1 group. No manual stimulation of the needles will be performed.