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Emma Hilton Profile picture
@FondOfBeetles
Oct 1, 2020 • 5 tweets • 1 min read • Read on X
Superstretchy tights can get in the sea.

All they do is leave me with stripes/patchy legs. I cannot, for the life of me, get them onto my legs in any semblance of uniformity.
Tights need some resistance to ensure the weave lies evenly and springs back when you rub them or pick off a bit of fluff.
I am unable to fashion a suitable Tubigrip applicator shape with my hands, so am currently sporting vertical stripes on my calves, pale patches on my shins and horizontal stripes on my thighs.
I have tried going a size up, rationalising that perhaps an looser fit might solve the issues.

Nope.
They don’t ladder very easily, I’ll give them that. And I have tested this pair thoroughly, having had my entire arms in them, waistband to ankle, trying to make them sit correctly.

Any tips?

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More from @FondOfBeetles

Emma Hilton Profile picture
Jan 26
On “we all start as females” (by request).

At the level of anatomy, “female” describes a particular reproductive system - eggs in ovaries, oviducts, uterus, cervix, vagina and vulva.
This reproductive system begins to differentiate at around six weeks post-fertilisation, when the embryonic gonads - two balls of cells clumped in your pelvic area - turn into ovaries and not testes.
The ongoing development of internal and external genitalia follows this gonadal differentiation into ovaries.

This is what is meant by “organisation” - the coordinated, sequential development of multiple tissues that have evolved around a given reproductive function.
Read 19 tweets
Emma Hilton Profile picture
Dec 25, 2024
I ran a fairly straightforward analysis of track and field performances across junior ages in different track and field competitions.

The raw analysis looks like this for international records. Above the line is male advantage, below the line is female advantage.

This pattern its repeated across national and state-level competitions. You can see that for almost all events at all ages, boys hold advantage over girls.Image
Image
Where female advantage is detected, this is easily explained.

At 10 years old, girls grow ahead of boys, and catch up/overtake them briefly in running.

The female advantage in discus at 15-16 years old is because girls throw lighter implements.

The distance drop off as boys move to the 2 kg discus is obvious.Image
But actually, while these data are good for getting a handle on the magnitude of advantage, I came up with a slightly different question to ask of them.

With help from @johnarmstrong5, I came up with a null hypothesis: if there is no difference between boys and girls pre-puberty, the frequency of boys and girls "winning" should be around 50/50.

So I collapsed the performances as wins or losses. See below for international records, scored as wins for the boys above the line and wins for the girls below the line.Image
Image
Read 5 tweets
Emma Hilton Profile picture
Dec 16, 2024
Hello @michaelshermer

Please see the following links to various papers and commentaries I and others have published on sports categories.

Please follow me (obvs 😂), @TLexercise @Scienceofsport @runthinkwrite @cathydevine56 @BrowngaGreg @MaryOConnorMD @DrMJoyner and associated scientists for academic work.

Guys, add your papers below please.
Where it all started (academically): “the muscular advantage enjoyed by transgender women is only minimally reduced when testosterone is suppressed.”

There are a couple of letter responses linked to this too.

link.springer.com/article/10.100…
Tommy @TLexercise has worked with transgender women with an eye specifically on sports.

academic.oup.com/jcem/article/1…

onlinelibrary.wiley.com/doi/10.1111/jo…
Read 6 tweets
Emma Hilton Profile picture
Dec 8, 2024
Let’s have a think what hormone categories looks like. And let’s assume that @neiltyson is considering a high/low T category. This has also been proposed by @AliceDreger

Thanks for the shoutout, Colin @SwipeWright
The proposal only works if you don’t deny evolution and sexual selection. Remarkably, there are academics who argue there is no biological basis for why males run faster than females. While it is plausible ongoing underinvestment in female sport means female athletes have not yet reached their full potential, it is frankly ridiculous to think this can explain the entirety of the performance gap.

See Sheree Bekker et al for more details on why, because one time, this one female figure skater won a medal, Usain Bolt should be allowed to race against females.
The proposal only makes sense if we recognise that the action of T on a body gives advantage in sport. This is by no means universally-accepted. Many humanities types argue T is not a key part of sports performance, citing males with low T and people registered as female with high T. Even though both phenomena are explicable by factors like illness, doping and male DSDs, still this argument persists.

See Veronica Ivy, Katrina Karkazis et al for why we should pretend that the stupidly high prevalence of weightlifting males with low T is not because they have just finished an off-period jacking up.
Read 17 tweets
Emma Hilton Profile picture
Nov 13, 2024
Why male advantage in sport is not a social construct: height.

Height is a key difference between males and females. What is nature v nurture? What does that mean for sport?Image
Bigger skeletons are most obviously driven by longer bone growth. Key bones like those in your thigh (“long bones”) grow from their end to get longer, making you taller. Image
The site of bone lengthening is called the “epiphyseal plate” or “growth plate”. Here, cells divide/enlarge, making new tissue that pushes the bone ends apart. This tissue calcifies and is replaced by bone, leading to lengthwise growth. Image
Read 21 tweets
Emma Hilton Profile picture
Nov 11, 2024
Ok, my charity wears off.

Bekker’s presentation of the “Hilton and Lundberg” argument is nonsense.

At no point have either of us, or anyone else we work with, reduced male advantage to simply muscle mass/strength. @TLexercise @Scienceofsport Image
In the contrary, we have consistently argued that male advantage stems from many physical then functional outcomes of male development.

We spent hours (actually days 😂) creating this graphic, trying to highlight key areas of physicality that underpin male advantage.

HowTF is this reduced to “it’s all muscle”?Image
In our original paper, we had a table upfront, highlighting (in a less pleasing presentation) the same type of metrics. Image
Read 7 tweets

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