Heide

because testosterone from years ago supposedly can magically stick around to give better physical results is indeed transphobia.

Not the testosterone, but the physiological changes do.

Exogenous testosterone leads to more muscle mass, there’s no debating that.

More muscle mass = more muscle nuclei

And as we know from studies, muscle nuclei never go away. So someone with more nuclei will have a permanent advantage in building muscle.

To test this hypothesis, animals were pre-treated with either steroid or placebo for 2 weeks, deprived of hormone for an additional 3 weeks, and then the muscles were forced to work. Prior steroid exposure conferred a distinct advantage to the muscles, with a 44% increase in CSA rather than the 17% increase observed in controls. These benefits were not transient. When the muscles were induced to hypertrophy 3 months after steroid treatments had ended (the mouse equivalent of 10 years of human lifespan), the steroid-treated group displayed a 31% increase in CSA compared to a modest 6% in placebo controls.

https://pmc.ncbi.nlm.nih.gov/articles/PMC3892465/

And nothing that has been said here is “transphobia”.

Yeah look I’m sorry but there’s not a biologist on earth who would agree with this. Saying that biological males don’t have a physiological advantage in strength based sports is just pure delusion.

Trans people deserve all the same rights and respect as anyone else, and I will fight for that. But if you’re going to say “red is blue and blue is red and science agrees with me” then no, I’m not going to indulge in that delusion

Reading comprehension? Like noticing that I’m not even the same person you’re replying to?

The magnitude of sex differences increases as individuals mature (65). Adolescent and adult males and females show average differences in aerobic capacity, body composition, and strength (61). These are interrelated but will be addressed individually. As children grow and move through puberty, both sexes have increases in body size, although to a greater extent among males, leading to greater male average mass and height (62, 71).

During puberty, differences in body composition become apparent, with males having lower average body fat, and higher average muscle mass compared to age matched females (64, 72, 73). This difference in body composition leads to increasing strength and aerobic capacity to a greater extent among males than females (64, 74). Due to a greater proportion of lean mass to total body mass, males on average are able to produce greater force for their body size (75–77).

This can lead to advantages in sports where strength and power are valued (56, 78).