Cited by 52Cardiovascular and exercise physiologySports Performance and TrainingMuscle metabolism and nutrition

Sex differences in the effects of 12 weeks sprint interval training on body fat mass and the rates of fatty acid oxidation and VO2max during exercise

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Bagley, Liam, Slevin, Mark, Bradburn, Steven, Liu, Donghui, Murgatroyd, Chris, Morrissey, George, Carroll, Michael, Piasecki, Mathew +2 more·2016·BMJ Open Sport & Exercise Medicine

Abstract

Background: The purpose of this study was to examine whether very short duration, very high intensity sprint interval training (SIT) leads to loss of body fat mass in association with improvements to VO 2 max and fatty acid oxidation, and to assess the extent of sex dimorphism in these physiological responses. Methods: A total of 24 men and 17 women (mean (SEM) age: 39 (±2) years; body mass index 24.6 (0.6)) completed measurements of the maximal rate of oxygen uptake (VO 2 max) and fatty acid oxidation (FATmax). Body fat and lean mass were measured by dual emission x-ray absorptiometry, and fasting blood lipid, glucose and insulin profiles were assessed before and after training. SIT consisted of 4×20 s sprints on a cycle ergometer at approximately 175% VO 2 max, three times per week for 12 weeks. Results: Fat mass decreased by 1.0 kg, although men lost statistically significantly more fat than women both when expressed in Kg and as % body fat. VO 2 max increased by around 9%, but women improved VO 2 max significantly more than men. FATmax improved by around 13%, but fasting plasma glucose, insulin, total triglyceride, total cholesterol and high-density lipoprotein (HDL) did not change after training, while low-density lipoprotein decreased by 8% (p=0.028) and the HDL:Total Cholesterol ratio improved by 6%. There were no sex differences in these metabolic responses to training. Conclusions: These results show lower body fat %, and higher rates of fatty acid oxidation and VO 2 max after 12 weeks of training for just 4 min per week. Notably, women improved VO 2 max more than men, while men lost more fat than women.

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Crossref · 10.1136/bmjsem-2015-000056

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  • Women utilize more lipid than men, largely attributable to sex-specific hormonal influences and epigenetic adaptations to endurance exercise.

    “women utilize more lipid when compared to men and this is largely attributable to sex-specific hormonal influences and epigenetic adaptations to endurance exercise [86,175–177].”

    From International society of sports nutrition position stand: nutritional concerns of the female athlete (2023) · cites this paper as [175]

    The Discussion’s “Rates of fatty acid oxidation” section says that, in the untrained state, women have higher relative rates of fatty acid oxidation than men during prolonged exercise. It does not attribute that difference largely to hormonal influences or epigenetic adaptations. The “Body fatness” section links sex hormones to differences in body fatness, not specifically to lipid use; page numbers are unavailable in our copy. (LLM, conf=0.88)

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Authors
Bagley, L., Slevin, M., Bradburn, S., Liu, D., Murgatroyd, C., Morrissey, G., Carroll, M., Piasecki, M., Gilmore, W. S., & McPhee, J. S.
Affiliations
  • Manchester Metropolitan University (GB)
  • University of Cambridge (GB)
Corresponding author
Bagley, Liam
Venue
BMJ Open Sport & Exercise Medicine
Publisher
BMJ
Published
2016-03
Volume
2
Issue
1
Pages
e000056
ISSN
2055-7647 (ISSN-L)
OpenAlex
W2303398811
Cited by
52
References
74
Citations by year
2026: 2 · 2025: 4 · 2024: 2 · 2023: 3 · 2022: 2 · 2021: 10 · 2020: 6 · 2019: 4 · 2018: 9 · 2017: 9 · 2016: 1
FWCI
15.77
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • BMJ Open Sport & Exercise Medicine (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • e-space (Manchester Metropolitan University) (acceptedVersion)
  • Repository@Nottingham (University of Nottingham) (submittedVersion, cc-by)
  • Repository@Nottingham (University of Nottingham) (submittedVersion)
Funders
  • Manchester Metropolitan University
  • Medical Research Council (MR/K025252/1)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
sprint interval training, sex differences, fat mass, fatty acid oxidation, VO2max, fat oxidation, high-intensity interval training, fat loss, lipid profile, HDL cholesterol, LDL cholesterol, insulin

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