The Study
Effect of high-intensity interval training vs. moderate-intensity continuous training on cardiometabolic risk factors in overweight and obese individuals
This study just watched what happened when some people did different kinds of exercise and measured their weight before and after. But we don’t know if they were randomly assigned, so we can’t say the exercise caused the changes — maybe the people who chose HIIT were already more motivated.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Two groups of overweight people exercised for 8 weeks—one did short, intense workouts, the other did longer, slower ones. A third group didn't exercise.
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 538 / 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.
- 1Both types of exercise helped prevent weight gain, but only the longer, moderate workouts showed clear weight loss.
- 2The short workouts were faster but didn't show stronger results.
- 3The slow, longer group lost weight and BMI significantly.
- 4The short, intense group lost some weight but not enough to be sure it wasn't by chance.
- 5Both exercise groups lost about the same amount overall.
- 6The no-exercise group gained weight.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of Basic and Clinical Physiology and Pharmacology
Year
2024
Authors
Anahita R Shenoy Basti, Pauline Anand, N. Chandralekha, Jostol Pinto, Srilakshmi M Prabhu
Related Content
Claims (4)
In overweight and obese people, 8 weeks of moderate-intensity exercise three times per week lowered body weight and body mass index, while shorter high-intensity interval training did not produce a statistically significant change in weight compared to before the training.
Among overweight and obese people, 8 weeks of high-intensity interval training and moderate-intensity continuous training produce the same average change in body weight and body mass index.
Overweight and obese people who did not follow any structured exercise program gained weight, increased their body mass index, and accumulated more body fat over eight weeks.
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.