The Study
Effects of 12 Weeks of Resistance Training on Body Composition, Muscle Hypertrophy and Function, Blood Lipid Level, and Hemorheological Properties in Middle-Aged Obese Women
This study gave one group of women a workout plan and another group didn’t change anything. Then they checked what changed. Because they randomly assigned who got the workout, we can guess the workout caused the improvements in muscle strength and blood flow—but only for these women. It didn’t make them lose fat or change their cholesterol.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Women who lifted weights 3 times a week for 3 months got stronger and had better blood flow, but didn't lose fat or gain big muscles.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 581 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — stronger muscles and better blood flow mean better movement and lower risk of heart problems, even without weight loss.
- 2Muscle strength increased by 20–30% (p<0.001); red blood cells became 15–20% more flexible and less sticky (p<0.001); body fat, muscle size, and cholesterol stayed the same.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Reviews in Cardiovascular Medicine
Year
2023
Authors
Ji-Su Seo, Hun-Young Park, Won-Sang Jung, Sung-Woo Kim, Yerin Sun, Jae-Ho Choi, Jisu Kim, Ki-Young Lim
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.