A Systematic Review and Meta-Analysis of Randomized Controlled Trials to Evaluate Technology-Supported Exercise Programs for Knee Health

Background: The aim of the study was to conduct a systematic review to comprehensively evaluate the relationship between pistachio intake and obesity. Methods:We searched 6 databases and acquired parameters from randomized controlled trials regarding obesity, including body weight, body mass index (BMI), and waist circumference. A fixed-effect model was applied to the meta-analysis for the weighted mean difference (WMD) between a diet with pistachios and a control diet. Results: Eleven trials including a total of 1593 subjects met the inclusion criteria. Compared to the group on a control diet, the pistachio diet group showed lower BMI values (WMD: 0.18kg/m; 95% confidence interval [CI]: 0.26, 0.11kg/m; I=29.8%) and no differences in body weight (WMD: 0.22kg; 95% CI: 0.50, 0.07kg; I=0.0%) or waist circumference (WMD: 0.76cm; 95% CI: 0.11, 1.63cm; I=7.0%). Conclusion: A diet with pistachios reduced BMI and had no significant effects on body weight and waist circumference. Abbreviations: BMI = body mass index, CI = confidence interval, CNKI = China National Knowledge Infrastructure, IQRs = interquartile ranges, WMD = weighted mean difference.