Research

Hormonal

Sprint Interval Training (SIT) reduces abdominal visceral fat area (AVFA) to a similar extent as High-Intensity Interval Training (HIIT) despite requiring significantly less total exercise time and training load.

If you are obese and want to reduce dangerous belly fat, Sprint Interval Training (SIT) is a viable option that saves time compared to traditional HIIT. Perform 80 cycles of 6-second all-out sprints with 9 seconds of rest, 3-4 times a week. You do not need to match the total work or time of longer HIIT sessions to see significant visceral fat loss.

GoodSupportsHIGH confidence
The reduction in AVFA (−6.31, −9.7 cm2) was not different between SIT and HIIT (p > 0.05)... Such findings suggest that the lower training load and exercise time commitments of the SIT regime could optimize the time-efficiency advantage of the traditional HIIT, facilitating the abdominal visceral fat reduction in obese young women.
Tomas K. Tong et al. · Frontiers in Physiology · 2018

Why this rating

Randomized controlled trial with objective CT/DEXA measurements, but small sample size (n=46) and short duration (12 weeks).

Source

Comparing Time Efficiency of Sprint vs. High-Intensity Interval Training in Reducing Abdominal Visceral Fat in Obese Young Women: A Randomized, Controlled Trial

Tomas K. Tong et al. · Frontiers in Physiology · 2018

DOI 10.3389/fphys.2018.01048

rct · n=46Cited 44×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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