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quality of studies included. Our results indicate that exercise intervention has a significant positive influence on primary insomnia, especially for older patients. We recommend that an exercise regimen of 60 min 4-5 times a week for 8-12 weeks can improve sleep quality and treat the symptoms of primary insomnia. Future studies should focus on verifying and extending our results by increasing sample size and improving the quality of studies included. Cardiovascular diseases (CVD) are still a leading cause of death worldwid