Effectiveness of WhatsApp online group discussion for smoking relapse prevention: protocol for a pragmatic randomized controlled trial.

Background And Aims: Sustained psychosocial support via online social groups may help former tobacco users maintain abstinence. This study aims to examine the effectiveness of participating in a WhatsApp social group for long-term smoking cessation.

Design: Two-arm, open-labelled, pragmatic, individually randomized controlled trial.

Brief handgrip and isometric exercise intervention for smoking cessation: A pilot randomized trial.

Introduction: Isometric exercises reduce craving, negative affect, and withdrawal symptoms during smoking cessation. This randomized controlled trial (RCT) was the first to test if a brief intervention using a handgrip and isometric exercises including hand pushing/pulling was feasible and efficacious to increase tobacco abstinence at 6-month.

Methods: This was a single-blinded, 2-arm pilot RCT in 6 community-based smoking cessation clinics in Hong Kong.