Notice: The NSCA website is scheduled to undergo system maintenance from 12:00 AM - 2:30 AM EST. During this time, there may be short service interruptions across the site and some parts of the site may not be accessible. We apologize for any inconvenience while we work to improve the website experience and security.

0

Notice: The NSCA website is scheduled to undergo system maintenance from 12:00 AM - 2:30 AM EST. During this time, there may be short service interruptions across the site and some parts of the site may not be accessible. We apologize for any inconvenience while we work to improve the website experience and security.

The Metabolic “Pink Taxing” of Fitness Standards for Female Service Members

by Allison Brager, PhD, and Valerie Starratt, PhD
TSAC Report May 2024
Vol 72, Issue 1

Share:

This article will explore the concept of “pink taxing,” whereby females must expend more metabolic energy compared to their male counterparts to achieve the same scores in standard military fitness tests.

Author Note: We have no conflicts of interest to disclose.

The opinions herein represent those of the author and do not reflect official viewpoints of the federal government, Department of Defense, and Department of the Army.

An independent review of the original implementation of the United States Army Combat Fitness Test (ACFT)— using data collected from 2019 through September 10, 2021—found that female soldiers failed the test at substantially greater rates than male soldiers, with failure rates of 48% for female enlisted soldiers compared to 8% for male enlisted soldiers and 28% for female officers compared to 4% for male officers (9). Again in 2023, a study showed results that females struggled to pass the ACFT at higher rates than males (21). This result has been central to a larger ongoing debate, primarily within the United States Congress, about gender-neutral and job-specific standards for military readiness. One reason for the sex difference in success rates and the associated debate about readiness standards is inherent sex differences in basic biology and physiological functioning, which effectively rendered the fitness requirements to pass the ACFT more difficult for female soldiers. The following evaluation of fitness standards in terms of sex-specific norms and biological constraints will present a discussion that, compared to their male counterparts, female soldiers must expend more metabolic energy and function substantially closer to peak possible performance to meet or exceed minimum fitness requirements. Potentially, this means that a female soldiers must reach greater relative levels of achievement to earn the same ACFT score as male counterparts. This article will explore this discussion and present the logic that leads to this conclusion, which is rooted in an appropriate understanding of core sex differences in biology. 

This article originally appeared in TSAC Report, the NSCA’s quarterly, online-only publication geared toward the training of tactical athletes, operators, and facilitators. It provides research-based articles, performance drills, and conditioning techniques for operational, tactical athletes. The TSAC Report is only available for NSCA Members. Read more articles from TSAC Report 

Share:

References

  1. Brager, A, Bruke, T, Orlando, F, Droege, A, Wilder, N, Lisman, P, and Dobrosielski, D. Correlating sex-specific military performance training to collegiate lacrosse. TSAC Report 67, 2022.
  2. Department of Defense, Health of the Force Report 2021. 14 Dec, 2022. Retrieved 2023 from extension:// efaidnbmnnnibpcajpcglclefindmkaj/https://health.mil/Reference- Center/Technical-Documents/2022/12/14/DOD-Healthof- the-Force-2021.
  3. Fournier, G, Bernard, C, Cievet-Bonfils, M, Kenney, R, Pingon, M, Sappey-Marinier, E, et al. Sex differences in semitendinosus muscle fiber-type composition. Scandinavian Journal of Medicine and Science in Sports 32(4): 720-727, 2022.
  4. Fryar, CD, Carroll, M, and Gu, Q. Anthropometric reference data for children and adults: United States, 2015-2018. January 2021. Retrieved 2023 from https://stacks.cdc.gov/view/cdc/100478.
  5. Geller, SE, Koch, A, Garland, C, MacDonald, EJ, Storey, F, and Lawton, B. A global view of severe maternal morbidity: Moving beyond maternal mortality. Reproductive Health 15: 98, 2018.
  6. Geller, SE, Rosenberg, D, Cox, S, Brown, M, Simonson, L, Driscoll, C, et al. The continuum of maternal morbidity and mortality: Factors associated with severity. American Journal of Obstetrics and Gynecology 191: 939-944, 2004.
  7. Hackett, G, British Society for Sexual Medicine guidelines on the management of erectile dysfunction in men - 2017. The Journal of Sexual Medicine 15: 430-457, 2018.
  8. Haizlip, KM, Harrison, BC, and Leinwand, LA. Sex-based differences in skeletal muscle kinetics and fiber-type composition. Physiology 30: 30-39, 2014.
  9. Hardison, CM, Mayberry, P, Krull, H, Setodji, C, Panis, C, Madison, R, et al. Independent review of the Army Combat Fitness Test: Summary of key findings and recommendations. 2022. Retrieved 2023 from https://www.rand.org/pubs/research_reports/RRA1825-1.html.
  10. Hayward, A, and Gillooly, JF. The cost of sex: Quantifying energetic investment in gamete production by males and females. PLoS ONE 6: e16557, 2011.
  11. Hunter, SK. The relevance of sex differences in performance fatigability. Medicine and Science in Sports and Exercise 48: 2247-2256, 2016.
  12. Lehtonen, J, Parker, GA, and Schärer, L. Why anisogamy drives ancestral sex roles. Evolution 70: 1129-1135, 2016.
  13. Leyk, D, Gorges, W, Ridder, D, Wunderlich, M, Ruther, T, Sievert, A, and Essfeld, D. Hand-grip strength of young men, women and highly trained female athletes. European Journal of Applied Physiology 99: 415-421, 2007.
  14. Leyk, D, Rohde, U, Erley, O, Gorges, W, Essfeld, D, Erren, TC, and Piekarski, C. Maximal manual stretcher carriage: Performance and recovery of male and female ambulance workers. Ergonomics 50: 752-762, 2007.
  15. Longman, DP, Wells, JCK, and Stock, JT. Human athletic paleobiology; Using sport as a model to investigate human evolutionary adaptation. Yearbook of Physical Anthropology 171: 42-59, 2020.
  16. Maloney, CB. The pink tax: How gender-based pricing hurts women’s buying power. United States Congress Joint Economic Committee; 2016.
  17. Mauvais-Jarvis, F. Sex differences in metabolic homeostasis, diabetes, and obesity. Biology of Sex Differences 6: 1-9, 2015.
  18. Miller, AEJ. Gender differences in strength and muscle fiber characteristics. European Journal of Applied Physiology and Occupational Physiology 66: 254-262, 1993.
  19. Power, ML, and Schulkin, J. Sex differences in fat storage, fat metabolism, and the health risks from obesity: Possible evolutionary origins. British Journal of Nutrition 99: 931-940, 2008.
  20. Restorff, V. Physical fitness of young women: Carrying simulated patients. Ergonomics 43: 728-743, 2000.
  21. Roberts, B, Rushing, K, and Palisance, E. Sex differences in body composition and fitness scores in military reserve officers’ training corps cadets. Military Medicine 188(1-2): 152-157, 2023.
  22. Sell, A, Hone, LSE, and Pound, N. The importance of physical strength to human males. Human Nature 23: 30-44, 2012.
  23. Shi, H, and Clegg, DJ. Sex Differences in the regulation of body weight. Physiology and Behavior 97: 199-204, 2009.
  24. Spoehr, T. In the military, physical fitness outranks gender “equity.” The Heritage Foundation, 2023. Retrieved 2023 from https://www.heritage.org/defense/commentary/the-militaryphysical- fitness-outranks-gender-equity.
  25. Thurber, C, Dugas, L, Ocobock, C, Carlson, B, Speakman, J, and Pontzer, H. Extreme events reveal an alimentary limit on sustained maximal human energy expenditure. Science Advances 5(6): 341, 2019.
  26. Welle, S, Tawil, R, and Thornton, CA. Sex-related differences in gene expression in human skeletal muscle. PLoS ONE 3: e1385, 2008.
About the author

Allison Brager

Contact Allison Brager

Contact Allison Brager

Your first name is required.
Your last name is required.
Your email is required.
Your message is required.
Your reCaptcha is required.

Your email was successfully sent to Allison Brager

Major Allison Brager is the Deputy Chief Science Officer of the United States Army John F. Kennedy Special Warfare Center and School. She has a Bachel ...

View full biography
#NSCAStrong #NSCAStrong

has been added to your shopping cart!

Continue Shopping Checkout Now