This is an outdated version published on 2025-05-09. Read the most recent version.
Preprint / Version 1

Concerns regarding the research design, participant selection, and data interpretation of ‘Body composition, exercise-related performance parameters and associated health factors of transgender women, cisgender women and cisgender men volleyball players’

##article.authors##

  • Christopher Kirk Sheffield Hallam University https://orcid.org/0000-0002-6207-027X
  • Kerry McGawley
  • Grant Abt
  • Tommy Lundberg
  • Cathy Devine
  • Gregory Brown
  • Eva Carneiro

DOI:

https://doi.org/10.51224/SRXIV.547

Keywords:

commentary, transgender athletes, questionable research practices

Abstract

This pre-print represents an open letter to the Editor of the British Journal of Sports Medicine (BJSM) in lieu of this journal offering a ‘letters to the editor’ option as part of its publishing practice. This work has been posted on the ‘rapid response’ section of the BJSM website attached to the article being discussed, and is repeated here verbatim to ensure a permanent DOI may be attached for citation purposes.

Metrics

Metrics Loading ...

References

. L.A. Alvares, M.V.L dos Santos Quaresma, F.P Nakamoto,... R. Ferreira. “Body composition, exercise-related performance parameters and associated health factors of transgender women, cisgender women and cisgender men volleyball players”. British Journal of Sports Medicine (2025) doi:10.1136/bjsports-2024-108601

. A.,McKay, T. Stellingwerff. E. Smith, D. Martin, I. Mujika, V. Goosey-Tolfrey, … Burke, L. (2021). “Defining training and performance caliber: a participant classification framework”. International Journal of Sports Physiology and Performance 17(20). (2021). pp 317–331.

. M.J. Joyner, S.K. Hunter, J.W. Senefeld. Evidence on sex differences in sports performance. (2025) Journal of Applied Physiology 138(1). pp 274-281. doi: 10.1152/japplphysiol.00615.2024

. T. Sattler, V. Hadzic, E. Dervisevic, G. Markovic. “Vertical jump performance of professional male and female volleyball players: effects of playing position and competition level”. (2015) Journal of Strength & Conditioning Research 29(6). pp 1486-93.

. L.S Boogers, C.M. Wiepjes, D.T. Klink, I. Hellinga I, A van Trotsenburg, M. den Heijer, S. Hannema. “Transgender girls grow tall: adult height is unaffected by GnRH analogue and estradiol treatment”. (2022). Journal of Clinical Endocrinology and Metabolism 107(9) doi: 10.1210/clinem/dgac349

. T. Lundberg,, M. O’Connor, C. Kirk, N. Pollock, G. Brown, (2024), “Comment on: “A unique pseudo-eligibility analysis of longitudinal laboratory performance data from a transgender female competitive cyclist”. (2024) Translational Exercise Biomedicine 1(3-4) https://doi.org/10.1515/teb-2024-0026

. Y. Zhang, R. Hedo, A. Rivera, R. Rull, S. Richardson, X.M. Tu. “Post hoc power analysis: is it an informative and meaningful analysis?”. (2019. General Psychiatry, 32(4), e100069. https://doi.org/10.1136/gpsych-2019-100069

. S. Greenland, S.J. Senn, K.J. Rothman, J.B. Carlin, C. Poole, S.N. Goodman, D.G. Altman (2016). “Statistical tests, P values, confidence intervals, and power: a guide to misinterpretations.” (2016) European Journal of Epidemiology, 31(4), pp 337–350. https://doi.org/10.1007/s10654-016-0149-3

. D. Lakens. (2017). “Equivalence Tests: A practical primer for t Tests, Corrrelations, and Meta-Analyses”. (2017). Social Psychology and Personality Science 8(4), pp. 355–362. https://doi.org/10.1177/1948550617697177

. M.A. Mansournia, G.S. Collins, R. Nielsen,, M. Nazemipour, N. Jewell, D. Altman, M. Campbell (2021). “A CHecklist for statistical Assessment of Medical Papers (the CHAMP statement): explanation and elaboration.” (2021). British Journal of Sports Medicine, 55(18), pp.1009–1017. https://doi.org/10.1136/bjsports-2020-103652

. S. Harris, S. Jedlicka, R. Pielke, H. Ryan, (2023), “The politics of exclusion: Analyzing U.S. state responses to interscholastic transgender athletes.” (2023) International Journal of Sport Policy and Politics, 15:4, https://doi.org/10.1080/19406940.2023.2242878

. T. Lundberg, R. Tucker, K. McGawley, A. Williams, G. Millet, O. Sandbakk, G. Howatson, G. Brown, L. Carlson, S. Chantler, M. Chen, S. Heffernan, N. Heron, C. Kirk, M. Murphy, N. Pollock, J. Pringle, A. Richardson, J. Santos-Concejero, G. Stebbings, A. Christiansen, S. Phillips, C. Devine, C. Jones, J. Pike, E. Hilton, “The International Olympic Committee framework on fairness, inclusion and nondiscrimination on the basis of gender identity and sex variations does not protect fairness for female athletes,” (2024), Scandinavian Journal of Medicine and Science in Sports, https://doi.org/10.1111/sms.14581

. B. Hamilton, A. Brown, S. Montagner-Moraes, C. Comeras-Chueca, P. Bush, F. Guppy, Y. Pitsiladis. “Strength, power and aerobic capacity of transgender athletes: a cross-sectional study”. (2024) British Journal of Sports Medicine 58(11).

Downloads

Posted

2025-05-09

Versions