Why the study?
Combined training is more effective than an isolated modality in reducing cardiometabolic risk, but the effect of circuit training volume on risk indicators in overweight women remained to be evaluated.
Does moderate-volume circuit training improve anthropometric and cardiometabolic risk indicators in overweight women?
Cohort (n=32)
No
Does moderate-volume circuit training improve anthropometric and cardiometabolic risk indicators in overweight women?
Odds Ratio: 0.126 (95% CI 0.019–0.827)
p-value: p=0.02
Higher adherence and training volume in a circuit training program significantly attenuates cardiometabolic risk factors, particularly total cholesterol and HDL-c, in overweight women.
May support moderate-volume activity for cholesterol control in overweight women; hypothesis-generating, needs RCTs before practice change.
Introduction Combined training is more effective than an isolated modality in reducing cardiometabolic risk indicators. Objective To evaluate the effect of circuit training volume on anthropometric and biochemical risk indicators for cardiometabolic diseases in overweight women. Methods Thirty-two participants underwent 24 weeks of circuit training with free weights combined with aerobic exercise. The training volume during the 24 weeks was used to distribute the women into moderate-volume physical activity (MVA), low-volume physical activity (LVA) and control (CON) groups. Anthropometric indices (body mass, body mass index (BMI), waist circumference (WC), waist-hip ratio (WHR)), blood glucose, insulin, insulin resistance (HOMA-IR), total cholesterol (TC), triglycerides, HDL-c, and LDL-c were evaluated at the beginning of the program and after 12 and 24 weeks. Results There was no interaction between training volume and time for any of the variables studied, but the intervention time influenced body mass (p=0.013) and BMI (p=0.012), and there was a tendency for participation time to reduce body mass (p=0.063) and BMI (p=0.062) after six months of intervention. The volume of the physical activity affected HDL-c (p=0.037), being significant (p=0.030) in the comparison between the MVA and CON groups. Additionally, there was a downward trend in HDL-c after six months of intervention (p=0.073), with a smaller reduction observed in the MVA group, indicating a protective role of moderate physical activity in the reduction of this lipid fraction. The association between physical activity volume and participation time resulted in a clinical improvement in total cholesterol (χ2 = 5.453, p = 0.02), with a higher probability of reaching clinically adequate values in the MVA group (OR = 0.126; 95%CI 0.019 - 0.827). Conclusion Training volume improved cardiometabolic risk factors in overweight women. Level of evidence II; Therapeutic Studies - Investigating the Results of Treatment.
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Zanina et al. (2022) conducted a cohort in Overweight women (n=32). Moderate-volume physical activity (circuit training ≥75 min/wk) vs. Low-volume physical activity or control (very low adherence) was evaluated on Clinical improvement in total cholesterol (OR 0.126, 95% CI 0.019 - 0.827, p=0.02).
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