{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T16:32:10Z","timestamp":1789576330051,"version":"build-2803163510"},"reference-count":48,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T00:00:00Z","timestamp":1760659200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Public Health"],"abstract":"Background<\/jats:title>A physically inactive lifestyle is associated with an increased risk of obesity, dyslipidemia and metabolic disorders, especially in women. While high-intensity training methods have been extensively studied in male populations, the physiological and metabolic effects of high-intensity interval resistance training (HIIRT) in overweight women are understudied. The aim of this study was to investigate the effects of an 8-week HIIRT program on body composition and lipid metabolism in women.<\/jats:p><\/jats:sec>Methods<\/jats:title>A total of 30 women (mean age: 23.13\u202f\u00b1\u202f4.03\u202fyears, mean BMI: 31.21\u202f\u00b1\u202f2.92\u202fkg\/m2<\/jats:sup>) participated in an 8-week HIIRT program. Body composition was measured before and after the intervention using bioelectrical impedance analysis (BIA), while blood lipid parameters (triglycerides, total cholesterol, LDL, and HDL) were analyzed. Paired-sample t<\/jats:italic>-tests were performed to determine the significance of the changes in body composition and lipid metabolism, using Cohen\u2019s d<\/jats:italic> effect size for interpretation.<\/jats:p><\/jats:sec>Results<\/jats:title>The HIIRT program led to significant improvements in body composition, with body weight decreasing by 11.4\u202fkg (p<\/jats:italic>\u202f=\u202f0.001, d<\/jats:italic>\u202f=\u202f0.96) and fat percentage decreasing by 3.1% (p<\/jats:italic>\u202f=\u202f0.001, d<\/jats:italic>\u202f=\u202f0.92). In addition, blood lipid profiles improved significantly, with triglycerides (\u22128.9\u202fmg\/dL, p<\/jats:italic>\u202f=\u202f0.001, d<\/jats:italic>\u202f=\u202f0.81, medium effect), total cholesterol (\u221219.7\u202fmg\/dL, p<\/jats:italic>\u202f=\u202f0,020, d<\/jats:italic>\u202f=\u202f1.98, large effect), and LDL (\u22128.2\u202fmg\/dL, p<\/jats:italic>\u202f=\u202f0.004, d<\/jats:italic>\u202f=\u202f1.96, large effect) decreased, while HDL increased by +10\u202fmg\/dL (p<\/jats:italic>\u202f=\u202f0.006, d<\/jats:italic>\u202f\u2265\u202f2.0, very large effect). These results underline the positive effects of HIIRT on lipid metabolism and cardiovascular health.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>The results suggest that HIIRT is an effective and time-efficient training model for improving body composition and metabolic health in women. The combination of high-intensity interval training principles with resistance exercise optimizes fat oxidation, improves fat metabolism and supports cardiovascular function. Given its efficacy, HIIRT could be a valuable strategy for treating metabolic disorders and reducing the risks of physically inactive behavior. Future research should focus on long-term adaptations and individual variability in metabolic responses to optimize HIIRT programs for broader populations.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fpubh.2025.1578569","type":"journal-article","created":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T16:36:33Z","timestamp":1760718993000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Impact of an 8-week high-intensity bodyweight interval training on body composition and blood lipid metabolism in young women with 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