Resistance exercise
depression, anxiety
SECONDARY
Regarding our primary outcomes, we did not observe any positive effect of resistance exercise on drug craving, mental wellbeing, and sleep quality. These results were inconsistent with a previous study where 12 weeks of resistance training positively changed anxiety, depression, sleep quality, and drug craving among Chinese methamphetamine users (Regarding our secondary outcomes, we found significant improvements in vital capacity, grip strength, and vertical jump. A relevant study has reported that resistance exercise might enhance the maximum ventilation volume of drug addicts, indicating a benefit for lung functions (Generally, our isometric exercise (Chan-Chuang) and resistance exercise using only elastic bands have very low requirements for both the environment and equipment, making them a viable option for home-based workouts during the pandemic (