Identification components of the preliminary intervention protocol
gestational diabetes mellitusThe, GDM
GDM
Based on the self-efficacy theory and evidence above, the preliminary component of the intervention protocol was addressed. Table 
The preliminary intervention protocol1.1.1 What is GDM?1.1.2 Adverse health outcomes of GDM?1.1.3 Physical activity could prevent GDM.1.1.4 The frequence, intensity,type, time of physical activity during pregnancy13–14weeks’ gestation1.2.1 the coach teach pregnant women how to exercise safely1.2.2 the coach guide the participants to do physical activity together following the exercise video.1.2.3 uploaded the exercise video to WeChat platform1.2.4 teach the participants how to keep exercise diary13–14weeks’ gestationonline group discussion with 15–20 participants via TencentMeetingonline group discussion with 15–20 participants via TencentMeeting15–16weeks’ gestationonline group discussion with 15–20 participants via TencentMeeting17–18weeks’ gestationonline group discussion with 15–20 participants via TencentMeetingNote: GDM, gestational diabetes mellitusThe face-to-face knowledge education session and exercise clinic visit will be conducted to help pregnant women achieve accomplishment experiences. The knowledge education session aims to emphasize the positive influence of physical activity during pregnancy on GDM prevention. The clinical practice recommendations regarding physical activity during pregnancy were included. After the knowledge education session, the coach will conduct a face-to-face group exercise clinic visit to teach pregnant women how to exercise safely. Then the coach guides the participants to do physical activity together following the exercise video under the supervision of obstetricians, nurses, and midwives. The exercise video will be uploaded to the WeChat platform. Then the researcher will teach the participants how to keep an exercise diary. The participants will be suggested to begin by completing 10 min of moderate physical activity daily and increasing the duration gradually to 30 min.Vicarious experience and verbal persuasion will be achieved through online group discussion via Tencent Meeting. Previous research indicated that two weeks of inactivity was one of the most significant predictors of dropouts among health platforms for behavioral intervention [The physiological and emotional status will be reached by knowledge education sessions through online group discussions via Tencent Meeting. During 15–16