Table 1 Intervention parameters of each group
Groups | Interventions | |||
|---|---|---|---|---|
Acupoints | EA parameters | Chinese herbs | Treatment sessions | |
EA & SZRD group | Bilateral HT7, bilateral SP6, GV20, GV24 | Continuous wave stimulation; frequency = 10 Hz; current ranges from 1 to 5 mA | Suanzaoren, Zhimu, Fuling, Chuanxiong, Gancao | 4 weeks, EA performed every other day, total 14 sessions; SZRD granules orally taken twice a day |
EA group | Bilateral HT7, bilateral SP6, GV20, GV24 | Continuous wave stimulation; frequency = 10 Hz; current ranges from 1 to 5 mA | No herbs | 4 weeks, EA performed every other day, total 14 sessions |
SZRD group | No acupoints | No parameters | Suanzaoren, Zhimu, Fuling, Chuanxiong, Gancao | 4 weeks, SZRD granules orally taken twice a day |
Sham group | Bilateral HT7, bilateral SP6, GV20, GV24 (no need inserting) | Frequency = 0 Hz; current = 0 mA | No herbs | 4 weeks, sham EA performed every other day, total 14 sessions |