The Study
Eight weeks of moderate aerobic exercise on body composition and markers of inflammation and oxidative stress in middle-aged obese females
This study shows that when these women started walking on a treadmill, their body’s inflammation levels went down even before they lost any weight. But it doesn’t prove that exercise causes this in everyone — just in this group of women under these specific conditions.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Even if you don't lose fat yet, going for brisk walks 3–4 times a week can calm down body inflammation and reduce cell damage.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 563 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — these changes mean your body is less stressed and damaged by inflammation even before you see the scale move, which can lower your risk of diabetes and heart disease.
- 2After 4 weeks: TNF-α dropped 25%, TAS rose 30%.
- 3After 8 weeks: body fat dropped 3–4%, 8-OHdG dropped 20%.
- 4Visceral fat didn't change.
- 5CRP and adiponectin stayed the same.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of Exercise Rehabilitation
Year
2025
Authors
Kyung-Shin Park, P. Gonzalez, Miguel Nieto, Brett Nickerson
Related Content
Claims (6)
Middle-aged obese Hispanic women who perform moderate aerobic exercise for eight weeks at 55% of their maximum oxygen uptake experience a 30% increase in total antioxidant status, with measurable improvements occurring after four weeks before any reduction in body fat.
In middle-aged obese Hispanic women, eight weeks of moderate aerobic exercise at 55% VO2max does not change levels of C-reactive protein or adiponectin.
In middle-aged obese Hispanic women, four weekly sessions of moderate aerobic exercise at 55% of VO2max for eight weeks lower TNF-α by about 25% and raise total antioxidant status by about 30%, without changes in body fat or visceral fat.
Eight weeks of moderate aerobic exercise at 55% of maximum oxygen uptake lowers levels of 8-hydroxydeoxyguanosine, a marker of oxidative DNA damage, in middle-aged obese Hispanic women, regardless of changes in body fat or visceral fat.
In middle-aged obese Hispanic women, eight weeks of moderate aerobic exercise at 55% VO2max reduces body fat percentage by 3–4% without significantly reducing visceral fat, meaning fat loss occurs more in subcutaneous fat than in visceral fat.
Moderate-intensity aerobic exercise uses fat as the main energy source and is linked to fewer cases of overtraining and injury than high-intensity exercise.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.