INS and polycystic ovary syndrome: Comparing HIIT and control groups (no intervention) revealed no effect on total cholesterol (MD –3.07 mg/dL, [95% CI −15.32, 9.19], p = 0.62; Fig 3a), LDL-c (MD –3.65 mg/dL, [95% CI −15.62, 8.33], p = 0.55; Fig 3b), and fasting insulin (MD –2.08 mg/dL, [95% CI −5.49, 1.32], p = 0.23; Fig 3c) in women with PCOS.