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Physical fitness of transgender and cisgender women is comparable, current evidence suggests

A review of 52 studies with 6,485 participants shows transgender women have similar strength and aerobic fitness to cisgender women despite greater lean mass after hormone therapy.

  • Published online Tuesday, the British Journal of Sports Medicine found that transgender women had greater lean mass 1–3 years after hormone therapy but showed comparable upper/lower body strength and VO2 max to cisgender women.
  • In pursuit of clarification, the researchers reviewed studies comparing body composition and fitness before and after hormone therapy to inform female sports participation policies amid contested debates.
  • The review pooled 52 studies involving 6,485 people , with varied designs and only 16 including physical activity assessment.
  • The authors conclude the available evidence does not support inherent athletic advantage and does not justify blanket bans, and they stress variable evidence urges future long-term longitudinal studies prioritising performance-specific metrics for policymakers weighing participation rules.
  • Given scarce elite transgender athletes, targeted studies remain difficult as Prof Alun Williams noted thorough literature gathering but highlighted problems and IOC Research Fund links.
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Lean Left

Based on data from 52 studies with more than 6,000 participants, the authors do not observe differences in strength or cardiorespiratory capacity of transgender women, although they recognize limitations in the outcomeHemeroteca - The international athletics federation introduces a mandatory genetic test to compete in the female category Transgender women have greater muscle mass between 1 and 3 years after receiving hormone therapy, but the ava…

·Spain
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Lean Left

The inclusion of trans women in female sport has become the battlehorse of a larger cultural war. Positions are fixed according to ideological or moral convictions. However, it also underlies a medical and scientific debate. A debate that is closer to being resolved today. A scientific team in Brazil has developed a meta-analysis that includes 52 studies and 6,485 people, who have analyzed the body composition and physical fitness of trans and c…

·Spain
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El Pais broke the news in Spain on Tuesday, February 3, 2026.
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