The Effects of Gender Affirming Treatment on the Sporting Performance and Muscle Memory of Transgender Athletes. A Protocol for The Tavistock Transgender Athlete Study

Blair Rose Hamilton*, Giscard Lima, James Barrett, Leighton Seal, Alexander Kolliari-Turner, Fergus Michael Guppy, Yannis Pitsiladis

*Corresponding author for this work

Research output: Working paperPreprint

Abstract

The issue of integrating transgender athletes into sport is becoming more prominent with the rising numbers of those identifying as transgender in society. Whether it is fair for transgender athletes to be included in their affirmed gender category across all levels of sport from grassroots to elite is the crux of the debate. Previous studies have shown muscle mass loss in transwomen and muscle mass and strength gain in transmen after 1 year of gender-affirming treatment (GAT). Wiik et al., 2020 found that transmen retain a strength disadvantage over cisgender men and transwomen retain muscle mass and strength advantages over cisgender women after 1 year of GAT. Roberts et al., 2020 also found that running performance in transwomen was maintained but not baseline muscular strength. However, very little data on sports performance measures outside muscular strength and running times exist, nor has any of the previous data been compared with a comparative control group. The aim of the TTAS is to investigate the effect of “muscle memory” in transgender athletes and investigate changes in physiology after 2 years of GAT such as bone mineral density, lean muscle mass and fat mass, coupled with sports performance measures in transwomen and transmen athletes and compare them with a cisgender female athletic cohort. This will elucidate what advantages/disadvantages transgender athletes gain/retain after 2 years of GAT over their cisgender counterparts and this will better inform policymakers who control their integration into their affirmed gender category in sport.
Original languageEnglish
PublisherCenter for Open Science
Number of pages15
DOIs
Publication statusPublished - 28 Jan 2021

Publication series

NameSportRxiv Preprints

User-Defined Keywords

  • Transgender
  • Sport, Performance
  • Muscle Memory
  • Transwomen
  • Transmen

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