Research
Mixed
High-intensity interval training (HIIT) has no significant effect on insulin, lipid profiles, C-reactive protein (CRP), or interleukin-6 (IL-6) in overweight/obese populations.
If you are overweight or obese, do not expect high-intensity interval training to significantly change your insulin levels, lipid profile, or inflammatory markers (CRP, IL-6). Focus on HIIT for its proven benefits on aerobic fitness, blood pressure, and body composition instead.
StrongRefutesHIGH confidence
HIIT demonstrated no effect on insulin, lipid profile, C reactive protein or interleukin 6 in overweight/obese populations.
Why this rating
Based on a systematic review and meta-analysis of 65 intervention studies.
Source
Effects of high-intensity interval training on cardiometabolic health: a systematic review and meta-analysis of intervention studies
Romeo Batacan et al. · British Journal of Sports Medicine · 2016
DOI 10.1136/bjsports-2015-095841
Meta-analysis · 65 studiesCited 786×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Short-term high-intensity interval training (ST-HIIT, <12 weeks) significantly improves maximal oxygen uptake (VO2 max), diastolic blood pressure, and fasting glucose in overweight/obese populations.Strong
- Long-term high-intensity interval training (LT-HIIT, ≥12 weeks) significantly improves waist circumference, body fat percentage, VO2 max, resting heart rate, systolic blood pressure, and diastolic blood pressure in overweight/obese populations.Strong
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