Mixed
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.
If you are overweight or obese, engaging in short-term high-intensity interval training (less than 12 weeks) can significantly boost your aerobic fitness, lower your diastolic blood pressure, and improve your fasting glucose levels. Focus on intervals performed at high intensity (at least 85% of your max heart rate or oxygen uptake) with short rest periods.
Short-term (ST) HIIT (<12 weeks) significantly improved maximal oxygen uptake (VO2 max; SMD 0.74, 95% CI 0.36 to 1.12; p<0.001), diastolic blood pressure (DBP; SMD −0.52, 95% CI −0.89 to −0.16; p<0.01) and fasting glucose (SMD −0.35, 95% CI −0.62 to −0.09; p<0.01) in overweight/obese populations.
Why this rating
Based on a systematic review and meta-analysis of 65 intervention studies using random-effects models.
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
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- 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
- 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.Strong
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