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High-intensity interval training reduces body weight and fat mass more than moderate-intensity continuous trainingHigh intensity interval training improves body composition in college students
Frontiers in MedicinePublished July 16, 2026Study authors: Haoyu Sun, Vitaliy V. Khramov, Jiandong Li, Mingyi WangDOI ↗Editorial oversight: Dr. Amelia Tan, PhD · Internal Medicine & Chronic Disease
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Key Takeaway
Note that HIIT may improve body composition metrics like fat mass but does not consistently alter lipid or glucose markers.
This meta-analysis evaluated the effects of high-intensity interval training (HIIT) compared to moderate-intensity continuous training (MICT) on body composition and metabolic markers in a population of college students. The analysis pooled data from several studies to determine if HIIT provided superior outcomes for weight management and metabolic health.
Key findings indicate that HIIT led to significantly greater reductions in body weight (MD = -1.23 kg; 95% CI -1.94 to -0.52), body fat percentage (MD = -1.21%; 95% CI -2.12 to -0.30), and fat mass (MD = -0.99 kg; 95% CI -1.66 to -0.33) compared to MICT. Additionally, waist circumference was significantly reduced in the HIIT group (MD = -1.33 cm; 95% CI -2.40 to -0.26). However, no significant differences were observed between HIIT and MICT for BMI, muscle mass, total cholesterol, triglycerides, HDL-C, LDL-C, fasting blood glucose, or fasting insulin.
The authors note several limitations, including a small number of studies and low evidence quality for both body composition (moderate to very low) and metabolic outcomes (very low). Subgroup and meta-regression analyses yielded uncertain results regarding moderators. While HIIT may offer superior benefits for specific body composition measures in college students, it did not consistently improve routine glucose and lipid metabolism markers.
Finding the right workout can be a challenge for students balancing busy schedules. A review of data involving 745 college students looked at how high-intensity interval training (HIIT) compares to moderate-intensity continuous training (MICT). HIIT involves short bursts of intense effort, while MICT is steady exercise at a moderate pace.
The results showed that students who did HIIT saw significant improvements in body composition. These included lower body weight, less fat mass, and smaller waist measurements compared to those doing steady exercise. However, the study found no significant differences in other areas, such as muscle mass or blood markers like cholesterol and fasting insulin.
It is important to note that while the results for body composition were promising, the quality of evidence was mixed, ranging from moderate to very low. Additionally, because the data on glucose and lipid metabolism came from a small number of studies, those specific findings are less certain. Talk with a healthcare provider to see if these training styles fit your personal goals.
What this means for you:
HIIT can help college students reduce body fat and weight more than steady exercise, but it did not change blood markers.
Common questions
Does HIIT help with weight loss more than steady exercise?
Yes, the study of 745 college students showed that high-intensity interval training (HIIT) led to significantly lower body weight and fat mass compared to moderate-intensity continuous training (MICT). Specifically, participants in the HIIT group saw a reduction in body weight by an average of 1.23 kg.
Does HIIT improve blood sugar or cholesterol levels?
The study found no significant difference between high-intensity interval training and moderate-intensity continuous training regarding glucose and lipid metabolism markers. This includes measurements like fasting blood glucose, insulin, and total cholesterol.
How certain are these results for body composition?
The evidence for body composition outcomes was a mix of moderate, low, and very low quality. Because the study relied on a small number of studies, the results should be viewed with some caution regarding how much impact HIIT has on specific body measurements.
Study Details
Study typeMeta analysis
EvidenceLevel 1
PublishedJul 2026
View Original Abstract ↓
This study systematically evaluated high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) for body composition and glucose and lipid metabolism markers in college students.
This PRISMA 2020–based systematic review searched PubMed, Cochrane Library, Web of Science, Embase, China National Knowledge Infrastructure (CNKI), and VIP Database (VIP) from inception to March 10, 2026. Restricted maximum likelihood (REML) random-effects models pooled mean differences (MDs) with 95% confidence intervals (CIs), and heterogeneity was assessed using Cochran’s Q and I2. Subgroup, meta-regression, sensitivity, publication bias, RoB 2.0, and GRADE analyses were conducted.
A total of 20 randomized controlled trials (RCTs) involving 745 college students were included, with 377 in HIIT and 368 in MICT. Compared with MICT, HIIT significantly reduced body weight (MD = -1.23 kg, 95% CI -1.94 to -0.52, P = 0.002), body fat percentage (MD = -1.21%, 95% CI -2.12 to -0.30, P = 0.013), waist-to-hip ratio (MD = -0.01, 95% CI -0.02 to -0.00, P = 0.014), waist circumference (MD = -1.33 cm, 95% CI -2.40 to -0.26, P = 0.023), and fat mass (MD = -0.99 kg, 95% CI -1.66 to -0.33, P = 0.010). No significant differences were found for body mass index (BMI), hip circumference, muscle mass, total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), fasting blood glucose (FBG), or fasting insulin (FINS). Subgroup analyses suggested sex might influence body weight and BMI effects, but most analyses showed no clear moderation. Meta-regression detected no significant moderation by duration or weekly HIIT volume. Evidence for body composition outcomes was mostly moderate, low, or very low; evidence for glucose and lipid metabolism outcomes was very low.
Compared with MICT, HIIT may provide greater benefits for selected body composition measures in college students, particularly body weight, body fat percentage, waist circumference, waist-to-hip ratio, and fat mass. However, HIIT did not consistently improve routine glucose and lipid metabolism markers. Given the limited evidence quality, small number of studies, and uncertain moderator findings from subgroup and meta-regression analyses, larger randomized controlled trials with standardized protocols are needed.
https://www.crd.york.ac.uk/PROSPERO/, identifier CRD420261396573.
