Dr Emma Hilton, a developmental biologist from the University of Manchester, was the co-author of the paper that was published in Sports Medicine. This research examined whether the IOC’s testosterone ruling would limit the male performance advantage and deliver fair and safe competition.
“The performance gap is more pronounced in sporting activities relying on muscle mass and explosive strength, particularly in the upper body,” said the study. “Longitudinal studies examining the effects of testosterone suppression on muscle mass and strength in transgender women consistently show very modest changes, where the loss of lean body mass, muscle area and strength typically amounts to approximately five per cent after 12 months of treatment. Thus, the muscular advantage enjoyed by transgender women is only minimally reduced when testosterone is suppressed.”