Effects of High-Intensity Interval Training (HIIT) on Body Composition of Young Adults - A Systematic Review

Mohd Sartaz Khan; Sandeep Kumar chaudhary

doi:10.36948/ijfmr.2025.v07i05.55157

Effects of High-Intensity Interval Training (HIIT) on Body Composition of Young Adults - A Systematic Review

Author(s)	Mr. Mohd Sartaz Khan, Prof. Dr. Sandeep Kumar chaudhary
Country	India
Abstract	Many people advocate High-Intensity Interval Training (HIIT) as a quick and easy method to enhance body composition and fitness. Young people (18–35 years old) are a crucial demographic for early obesity intervention. To conduct a PRISMA-based systematic review of intervention studies evaluating the impact of HIIT on young adults' body composition (fat mass, percentage body fat, lean mass, and waist circumference). RCTs and quasi-experimental studies of HIIT in young people (18–35 years old) were included. PubMed, Scopus, Web of Science, SPORTDiscus, and Cochrane CENTRAL are the databases to search (search technique specified). Results include fat mass, body fat percentage, lean mass, and waist circumference as determined by imaging, skinfolds, BIA, or DXA. Bias risk: ROBINS-I and RoB2. When there are at least three clinically comparable studies available, narrative synthesis with planned random-effects meta-analysis is used. When compared to baseline and inactive controls, HIIT consistently reduced fat mass and body fat percentage in intervention studies (most lasting 4–16 weeks). When energy expenditure was matched, outcomes were frequently comparable to those of moderate-intensity continuous training (MICT); when time-matched, HIIT demonstrated fat loss that was equivalent to or occasionally greater than MIT. Lean mass was affected in a varied way; it was mostly maintained but only slightly increased unless resistance training or greater mechanical load regimens were added. Usually, the waist circumference shrank a little. Moderate heterogeneity can be attributed to dietary control, baseline adiposity, assessment techniques, and procedure variance. An efficient and successful strategy for lowering young adults' obesity is HIIT. Combine HIIT with resistance training and a sufficient protein intake to increase lean mass. It is advised to use longer RCTs using DXA/imaging and to standardize methodology.
Keywords	High-Intensity Interval Training (HIIT), Body Composition, Fat Mass, Lean Mass, Young Adults, Systematic Review.
Published In	Volume 7, Issue 5, September-October 2025
Published On	2025-09-11
DOI	https://doi.org/10.36948/ijfmr.2025.v07i05.55157

View / Download PDF File

E-ISSN 2582-2160

doi

CrossRef DOI is assigned to each research paper published in our journal.

IJFMR DOI prefix is
10.36948/ijfmr

Downloads

Research Paper Format Copyright Permission Form and Undertaking Form Cover Page Vol 8 Isu 2 Cover Page Vol 8 Isu 1 Cover Page Vol 7 Isu 6

All research papers published on this website are licensed under Creative Commons Attribution-ShareAlike 4.0 International License, and all rights belong to their respective authors/researchers.

CC-BY-SA

About IJFMR Fees & Payment Current Issue Publication Archive	Submit Research Paper Track Submission Status Publication Guidelines Publication Ethics Peer Review & Plagiarism	Join as a Reviewer Editors & Reviewers Reviewer Referral Program Get Reviewer Membership Certi.	Website/Journal Policies Usage Policy Content Policies Privacy Policy

Contact Us		+91-9687-828-838	editor@ijfmr.com

International Journal For Multidisciplinary Research

A Widely Indexed Open Access Peer Reviewed Multidisciplinary Bi-monthly Scholarly International Journal

Effects of High-Intensity Interval Training (HIIT) on Body Composition of Young Adults - A Systematic Review

Share this