The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.
Expanding the Gap: An Updated Look Into Sex Differences in Running Performance
Abstract
Males consistently outperform females in athletic endeavors, including running events of standard Olympic distances (100 m to Marathon). The magnitude of this percentage sex difference, i.e., the sex gap, has evolved over time. Two clear trends in sex gap evolution are evident; a narrowing of the gap during the 20th century, followed by a period of stability thereafter. However, an updated perspective on the average sex gap from top 20 athlete performances over the past two decades reveals nuanced trends over time, indicating the sex gap is not fixed. Additionally, the sex gap varies with performance level; the difference in absolute running performance between males and females is lowest for world record/world lead performances and increases in lower-ranked elite athletes. This observation of an increased sex gap with world rank is evident in events 400 m and longer and indicates a lower depth in female competitive standards. Explanations for the sex difference in absolute performance and competition depth include physical (physiological, anatomical, neuromuscular, biomechanical), sociocultural, psychological, and sport-specific factors. It is apparent that females are the disadvantaged sex in sport; therefore, measures should be taken to reduce this discrepancy and enable both sexes to reach their biological performance potential. There is scope to narrow the sex performance gap by addressing inequalities between the sexes in opportunities, provisions, incentives, attitudes/perceptions, research, and media representation.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“a higher proportional area of type I muscle fibres”
From Ageing, Sex Differences, and REDs Risk in Endurance Runners: An Integrated Cross-Sectional Study Protocol (2026) · cites this paper as [4]
In the citing paper
“Female runners exhibit sex-specific biomechanical and metabolic characteristics, including a greater reliance on lipid oxidation during submaximal exercise”
From Ageing, Sex Differences, and REDs Risk in Endurance Runners: An Integrated Cross-Sectional Study Protocol (2026) · cites this paper as [4]
In the citing paper
“pacing strategies that may be more even in prolonged events”
From Ageing, Sex Differences, and REDs Risk in Endurance Runners: An Integrated Cross-Sectional Study Protocol (2026) · cites this paper as [4]
In the citing paper
“males typically outperform females in endurance events, with the magnitude of the sex-based performance gap varying by discipline, event demands, and competitive level (approximately 10–30% in many athletic contexts) [2,4,5].”
From Ageing, Sex Differences, and REDs Risk in Endurance Runners: An Integrated Cross-Sectional Study Protocol (2026) · cites this paper as [4]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Wang, Z., Ying, Z., Bosy-Westphal, A., Zhang, J., Schautz, B., Later, W., Heymsfield, S. B., & Müller, M. J. (2010) · The American Journal of Clinical Nutrition · doi:10.3945/ajcn.2010.29885 · Cited by 546
Gender differences in substrate for endurance exercise
Tarnopolsky, L. J., MacDougall, J. D., Atkinson, S. A., Tarnopolsky, M. A., & Sutton, J. R. (1990) · Journal of Applied Physiology · doi:10.1152/jappl.1990.68.1.302 · Cited by 470 · cited 2×
“Females have greater reliance on lipid oxidation during prolonged submaximal exercise than males (Tarnopolsky et al., 1990; Carter et al., 2001), and this may give them an advantage over marathon distances due to glycogen sparing and delaying fatigue (Sandbakk et al.”
BackgroundLipid metabolism in skeletal muscle of endurance-trained males and females
Costill, D. L., Fink, W. J., Getchell, L. H., Ivy, J. L., & Witzmann, F. A. (1979) · Journal of Applied Physiology · doi:10.1152/jappl.1979.47.4.787 · Cited by 189
Sandbakk, Ø., Solli, G. S., & Holmberg, H.-C. (2018) · International Journal of Sports Physiology and Performance · doi:10.1123/ijspp.2017-0196 · Cited by 160
Jaworowski, Å., Porter, M. M., Holmbäck, A. M., Downham, D., & Lexell, J. (2002) · Acta Physiologica Scandinavica · doi:10.1046/j.1365-201x.2002.t01-2-01004.x · Cited by 104
Research works printed but not linked: 60
- Abbiss, 2008, Describing and understanding pacing strategies during athletic competition., Sports Med., 38, 239, 10.2165/00007256-200838030-00004 · DOI · Paper page
- Bassett, 2000, Limiting factors for maximum oxygen uptake and determinants of endurance performance., Med. Sci. Sports Exerc., 32, 70, 10.1097/00005768-200001000-00012 · DOI · Paper page
- Berthelot, 2015, Has athletic performance reached its peak?, Sports Med., 45, 1263, 10.1007/s40279-015-0347-2 · DOI · Paper page
- Blackburn, 2006, Comparison of triceps surae structural stiffness and material modulus across sex., Clin. Biomech., 21, 159, 10.1016/j.clinbiomech.2005.08.012 · DOI
- Bundle, 2012, Sprint exercise performance: does metabolic power matter?, Exerc. Sport Sci. Rev., 40, 174, 10.1097/JES.0b013e318258e1c1 · DOI
- Capranica, 2013, The gender gap in sport performance: equity influences equality., Int. J. Sports Physiol. Perform., 8, 99, 10.1123/ijspp.8.1.99 · DOI
- Carter, 2001, Substrate utilization during endurance exercise in men and women after endurance training., Am. J. Physiol. Endocrinol. Metab., 280, E898, 10.1152/ajpendo.2001.280.6.E898 · DOI · Paper page
- Cheuvront, 2005, Running performance differences between men and women: an update., Sports Med., 35, 1017, 10.2165/00007256-200535120-00002 · DOI
- Coast, 2004, do gender differences in running performance disappear with distance?, Can. J. Appl. Physiol., 29, 139, 10.1139/h04-010 · DOI
- Costill, 1976, Skeletal muscle enzymes and fiber composition in male and female track athletes., J. Appl. Physiol., 40, 149, 10.1152/jappl.1976.40.2.149 · DOI · Paper page
- Cureton, 1986, Sex difference in maximal oxygen uptake: effect of equating haemoglobin concentration., Eur. J. Appl. Physiol., 54, 656, 10.1007/BF00943356 · DOI
- Deaner, 2006, More males run fast., Evol. Hum. Behav., 27, 63, 10.1016/j.evolhumbehav.2005.04.005 · DOI
- Deaner, 2012, Distance running as an ideal domain for showing a sex difference in competitiveness., Arch. Sex Behav., 42, 413, 10.1007/s10508-012-9965-z · DOI
- Deaner, 2016, Fast men slow more than fast women in a 10 kilometer road race., PeerJ, 4, e2235, 10.7717/peerj.2235 · DOI
- Deaner, 2015, Men are more likely than women to slow in the marathon., Med. Sci. Sports Exerc., 47, 607, 10.1249/MSS.0000000000000432 · DOI
- Donnelly, 2013, The London 2012 Olympics: A Gender Equality Audit. Toronto: Centre for Sport Policy Studies, Faculty of Kinesiology and Physical Education., 76
- Duffield, 2003, Energy system contribution in track running., New Stud. Athlet., 18, 47
- Duffield, 2005, Energy system contribution to 400-metre and 800-metre track running., J. Sports Sci., 23, 299, 10.1080/02640410410001730043 · DOI · Paper page
- Edwards, 2018, Proposal to disregard athletics world records prior to 2005: a radical and misjudged initiative., Br. J. Sports Med., 52, 1071, 10.1136/bjsports-2017-098307 · DOI
- Filipas, 2018, Elite male and female 800-m runners’ display of different pacing strategies during season-best performances., Int. J. Sports Physiol. Perform., 13, 1344, 10.1123/ijspp.2018-0137 · DOI
- Handelsman, 2017, Sex differences in athletic performance emerge coinciding with the onset of male puberty., Clin. Endocrinol., 87, 68, 10.1111/cen.13350 · DOI · Paper page
- Hanley, 2016, Pacing, packing and sex-based differences in Olympic and IAAF World Championship marathons., J. Sports Sci., 34, 1675, 10.1080/02640414.2015.1132841 · DOI
- Hanley, 2018, Champions are racers, not pacers: an analysis of qualification patterns of Olympic and IAAF World Championship middle distance runners., J. Sports Sci., 36, 2614, 10.1080/02640414.2018.1472200 · DOI
- Hanley, 2019, Successful pacing profiles of olympic and IAAF world championship middle-distance runners across qualifying rounds and finals., Int. J. Sports Physiol. Perform., 14, 894, 10.1123/ijspp.2018-0742 · DOI
- Harms, 1998, Exercise-induced arterial hypoxaemia in healthy young women., J. Physiol., 507, 619, 10.1111/j.1469-7793.1998.619bt.x · DOI
- Hettinga, 2019, The science behind competition and winning in athletics: using world-level competition data to explore pacing and tactics., Front. Sports Act. Living, 1, 11, 10.3389/fspor.2019.00011 · DOI
- Holden, 2004, An everlasting gender gap?, Science, 305, 639, 10.1126/science.305.5684.639 · DOI
- Hunter, 2015, The two-hour marathon: what’s the equivalent for women?, J. Appl. Physiol., 118, 1321, 10.1152/japplphysiol.00852.2014 · DOI
- Hunter, 2013, Sex differences in marathon running with advanced age: physiology or participation?, Med. Sci. Sports Exerc., 45, 148, 10.1249/MSS.0b013e31826900f6 · DOI
- Hunter, 2011, Is there a sex difference in the age of elite marathon runners?, Med. Sci. Sports Exerc., 43, 656, 10.1249/MSS.0b013e3181fb4e00 · DOI
- Huxley, 2007, Sex and the cardiovascular system: the intriguing tale of how women and men regulate cardiovascular function differently., Adv. Physiol. Educ., 31, 17, 10.1152/advan.00099.2006 · DOI
- Joyner, 1993, Physiological limiting factors and distance running: influence of gender and age on record performances., Exerc. Sport Sci. Rev., 21, 103, 10.1249/00003677-199301000-00004 · DOI
- Joyner, 2017, Physiological limits to endurance exercise performance: influence of sex: sex, exercise and elite endurance performance., J. Physiol., 595, 2949, 10.1113/JP272268 · DOI
- Keenan, 2018, Girls in the boat: sex differences in rowing performance and participation., PLoS One, 13, e0191504, 10.1371/journal.pone.0191504 · DOI
- Knechtle, 2016, Do women reduce the gap to men in ultra-marathon running?, Springerplus, 5, 672, 10.1186/s40064-016-2326-y · DOI
- LoMauro, 2018, Sex differences in respiratory function., Breathe, 14, 131, 10.1183/20734735.000318 · DOI · Paper page
- March, 2011, Age, sex, and finish time as determinants of pacing in the marathon., J. Strength Cond. Res., 25, 386, 10.1519/JSC.0b013e3181bffd0f · DOI
- Millard-Stafford, 2018, Nature versus nurture: have performance gaps between men and women reached an asymptote?, Int. J. Sports Physiol. Perform., 13, 530, 10.1123/ijspp.2017-0866 · DOI · Paper page
- Miller, 1993, Gender differences in strength and muscle fiber characteristics., Eur. J. Appl. Physiol., 66, 254, 10.1007/BF00235103 · DOI · Paper page
- Mpholwane, 2007, The Determinants of Running Performance in Middle Distance Female Athletes.
- Murphy, 2014, The sex difference in haemoglobin levels in adults–mechanisms, causes, and consequences., Blood Rev., 28, 41, 10.1016/j.blre.2013.12.003 · DOI · Paper page
- Nuell, 2019, Sex differences in thigh muscle volumes, sprint performance and mechanical properties in national-level sprinters., PLoS One, 14, e0224862, 10.1371/journal.pone.0224862 · DOI
- Pate, 2007, American women in the marathon., Sports Med., 37, 294, 10.2165/00007256-200737040-00006 · DOI
- Purkiss, 1997, Cardiovascular physiology: similarities and differences between healthy women and men., J. SOGC, 19, 853, 10.1016/S0849-5831(97)80008-0 · DOI
- Sandford, 2018, Anaerobic speed reserve: a key component of elite male 800-m running., Int. J. Sports Physiol. Perform., 14, 501, 10.1123/ijspp.2018-0163 · DOI
- Sandford, 2019, Maximal sprint speed and the anaerobic speed reserve domain: the untapped tools that differentiate the world’s best male 800 m runners., Sports Med., 49, 843, 10.1007/s40279-018-1010-5 · DOI
- Sandford, 2019, “Question Your Categories”: the misunderstood complexity of middle-distance running profiles with implications for research methods and application., Front. Sports Act. Living, 1, 28, 10.3389/fspor.2019.00028 · DOI
- Schiaffino, 2012, Skeletal muscle fiber types, Muscle, 855, 10.1016/B978-0-12-381510-1.00060-0 · DOI
- Seiler, 2007, The fall and rise of the gender difference in Elite anaerobic performance 1952-2006., Med. Sci. Sports Exerc., 39, 534, 10.1249/01.mss.0000247005.17342.2b · DOI
- Senefeld, 2015, Sex differences in elite swimming with advanced age are less than marathon running: sex differences in swimming and running., Scand. J. Med. Sci. Sports, 26, 17, 10.1111/sms.12412 · DOI
- Senne, 2016, Examination of gender equity and female participation in sport., Sport J., 22, 8
- Slawinski, 2015, How 100-m event analyses improve our understanding of world-class men’s and women’s sprint performance., Scand. J. Med. Sci. Sports, 27, 45, 10.1111/sms.12627 · DOI
- Sparling, 1998, The gender difference in distance running performance has plateaued: an analysis of world rankings from 1980 to 1996., Med. Sci. Sports Exerc., 30, 1725, 10.1097/00005768-199812000-00011 · DOI
- Tanaka, 2002, The battle of the sexes in sports., Lancet, 360, 92, 10.1016/S0140-6736(02)09355-8 · DOI
- Thibault, 2010, Women and men in sport performance: the gender gap has not evolved since 1983., J. Sports Sci. Med., 9, 214
- Trubee, 2014, Effects of heat stress and sex on pacing in marathon runners., J. Strength Cond. Res., 28, 1673, 10.1519/JSC.0000000000000295 · DOI
- Vickers, 2016, An empirical study of race times in recreational endurance runners., BMC Sports Sci. Med. Rehabil., 8, 26, 10.1186/s13102-016-0052-y · DOI
- Waldvogel, 2019, Women reduce the performance difference to men with increasing age in ultra-marathon running., Int. J. Environ. Res. Public Health, 16, 2377, 10.3390/ijerph16132377 · DOI
- Wheatley, 2014, Sex differences in cardiovascular function during submaximal exercise in humans., Springerplus, 3, 445, 10.1186/2193-1801-3-445 · DOI
- Whipp, 1992, Ward Susana. Will women soon outrun men?, Nature, 355, 25, 10.1038/355025a0 · DOI
Cited by
Solli, G. S., Sandbakk, Ø., & McGawley, K. (2024) · Sports Medicine - Open · doi:10.1186/s40798-024-00792-8 · Cited by 14
Oreská, Ľ., Kundeková, B., Varga, L., Stebelová, K., Okuliarová, M., Payer, J., & Sedliak, M. (2026) · Sports · doi:10.3390/sports14030121
Metadata
- Authors
- Hallam, L. C., & Amorim, F. T.
- Venue
- Frontiers in Physiology
- Publisher
- Frontiers Media SA
- Published
- 2022-01-04
- Volume
- 12
- ISSN
- 1664-042X
- Cited by
- 51
- References
- 5
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Expanding the Gap: An Updated Look Into Sex Differences in Running Performance. https://app.cochat.ai/papers/10.3389/fphys.2021.804149
- The paper
- Hallam, L. C., & Amorim, F. T. (2022). Expanding the Gap: An Updated Look Into Sex Differences in Running Performance. Frontiers in Physiology. https://doi.org/10.3389/fphys.2021.804149
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.