Greg
@BrowngaGreg
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Father. Husband. Runner. Hunter. Simple Professor of Exercise Science who knows that there are differences between males and females. Opinions are my own
Joined August 2014
1/14.@billoram .In 2023 I posted a thread outlining the research showing that transwomen have retained male athletic advantages. I am posting an updated thread today. @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport.
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It's finally published! Evidence that boys run faster than girls in track competition BEFORE puberty!.@Scienceofsport @DrMJoyner @coachblade @TLexercise @fondofbeetles @Hogshead3Au @icons_women @MichelleNash45 @cathydevine56 @sharrond62 @mara_yamauchi .
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I’m like a star struck fanboy…@Riley_Gaines_ is coming to Nebraska on August 27 to talk about #SaveWomensSports and I will get to share the stage with her. @nebfamily
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I am pleased to share yet more scientific evidence that there are sex-based differences in athletic performance before with boys aged 10 and under long jumping, throwing javelin, and shot put farther than girls. @MaryOConnorMD @jwsenefeld @DrMJoyner .
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A Thread. #1 @sharrond62 @icons_women @ICFSport @JimBUWDawg @coachblade @boysvswomen The other day, @CNN stated that the @WorldAthletics policy on transwomen did not align with mainstream science, and cited a single paper from 2017. Here's my rebuttal, delayed due to work. .
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@FondOfBeetles But, hey, let’s be sure that a 43 year old MtF feels included because that’s more important than the future aspirations of a promising young woman. SMH.
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“The state is permitted to legislate sports rules on this basis because sex, and the physical characteristics that flow from it, are substantially related to athletic performance and fairness in sports.” @SaveWomensSport @coachblade
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I think CNN might need to re-evaluate their contract with their "mainstream science" consultant.
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#2. Three scholarly reviews by three different groups of authors that evaluated the existing research and all three concluded that inherent male athletic advantages are not erased by several years of “Gender Affirming Hormone Therapy” in transwomen.
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Utah House Speaker Mike Schultz “Men have no place in women’s sports — period,” .
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@CarilynJohnson These two boxers, Khelif and Yu-ting, know they failed tests for eligibility to compete in the female category and did not appeal those tests (per the IBA statement). And yet they are knowingly competing in the female category in the Olympics. This is unethical.
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#3. 16 papers demonstrating that male advantages in lean body mass are not erased by 6 months-14 years of “Gender Affirming Hormone Therapy” in transwomen. A large amount (perhaps 30-70%) of male athletic advantages can be explained by the sex-based differences in lean body mass
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Tomorrow I will join @SaveWomensSport in N.C. (via zoom) in sharing my opinion as an Exercise Physiologist that men and women are biologically different, that these differences give men advantages in strength and speed, and the advantages are not erased by transgender hormones.
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In 8 out of 12 events boys swam significantly faster than girls and there were no events where girls were significantly faster. More evidence that sex matters in sports!.@TLexercise @MaryOConnorMD @jwsenefeld @RealLastStand @Scienceofsport @icons_women .
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@KDansky @HJoyceGender @thehill @TheDemocrats Great rephrasing of TERF to mean “tired of explaining real facts” or “tired of explaining reality to fools” by @KDansky , and a great piece of writing (as though she would produce anything else).
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#4. 8 papers demonstrating that 6 months – 14 years of “Gender Affirming Hormone Therapy” in transwomen does not erase the male advantages in grip strength
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Absolutely agree! We need men to stand up to protect the safety, fairness, and integrity of girls’ and women’s sports. If not us, then who?.
🏈 @thefrankmurphy is standing strong for women in sports, urging male athletes to step up and think of the women in their lives.
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#5. One paper demonstrating that isometric and isokinetic thigh muscle strength was not reduced due to 1 year of “Gender Affirming Hormone Therapy” in transwomen and the strength in TW was ~50% higher than in comparable females.
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@icons_women @ICFSport .Women’s sports as it should be. Excellent female athletes competing against other excellent female athletes.
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#6. Two papers on transgender U.S. Air Force personnel, with one paper concluding that transwomen were still faster after 2 years of GAHT and the other paper concluding that TW still performed more sit ups after 3 years and more pushups after 4 years GAHT.
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#8. One case study paper showing that gender affirming hormone therapy in a NCAA D1 TW swimmer (**cough** Lia Thomas **cough**) did not reduce performance as much as would be necessary to eliminate male advantage.
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I am so surprised my proposal “Transwomen competing in women’s sports: What we know and what we don’t.” Was accepted for presentation. But I am excited! @SaveWomensSport @FondOfBeetles
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New paper/blog from me and @TLexercise. It’s supposed to be a bit more reader friendly than a typical scholarly paper. @Riley_Gaines_ @boysvswomen @FondOfBeetles @runthinkwrite @coachblade @cathydevine56 #savewomensports
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Iconic football coach Lou Holz knows that males don’t belong in female sports. “I was happy when Title IX came out. But here we are, many years later, and now we can’t even ensure women competing against women.”.@icons_women @ICFSport .
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#10. Six papers showing that (combined) sex-based differences in lean body mass are not erased by short term use of puberty blockers in adolescents, or longer-term use of puberty blockers and cross sex hormones starting in adolescents and continuing through early adulthood.
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#7. One cross-sectional paper showing that an average of 14 years “Gender Affirming Hormone Therapy” does not erase male advantages in VO2peak
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A well written explanation by a high school freshman of why boys do not belong in girls’ locker rooms. @SaveWomensSport @coachblade @sharrond62 @JimBUWDawg @KDansky @cathydevine56
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@Scienceofsport and @sharrond62 bring the truth like a 20 pound sledgehammer regarding shoddy science funded by the @iocmedia regarding transgender athletes. Comparing males who weigh 50 pounds more than females is comparing 🍎 to 🍊.
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#9. Three papers showing that (combined) sex-based differences in body height are not erased with short term use of puberty blockers in adolescents, or puberty blockers and cross sex hormones starting in adolescents and continuing through early adulthood
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Unfortunately the Tewksbury Public Library was threatened into submission, but @WomensLibFront has stepped in and the presentation is on! .Wednesday, October 2, 7:00 PM. Register at the link below.@DIAGdemocrats @icons_women @hoovlet @boysvswomen @SF_TERF_CENTRAL.
WoLF will now be hosting Dr. Brown ’s #canceled talk, titled "Males And Females Are Different And That Matters In Sports" . When: October 2nd, 7pm ET. Register here:. #SaveWomensSports.
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I always love to hear @mara_yamauchi so clearly explain that males should not compete in female sports. That she is doing so regarding a 50 year old male competing in the women’s category in the Paralympic Games is simply unbelievable.
Paralympics on @GBNEWS @mara_yamauchi .@PatrickChristys. He/him used, Petrillo described as male, a man. @GBNEWS at this point *is* the balance across platforms. Even if not internally balanced, it’s the only media offer to prioritise accuracy.
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@hoovlet Just, such unscientific reasoning to deny a discussion at a supposedly scientific conference. “The session was rejected because it relied on assumptions that run contrary to the settled science in our discipline…”. No scientist should consider science settled.
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A good editorial about the Lia Thomas situation and how it’s changing the discussion about women’s sports @SaveWomensSport @JimBUWDawg @coachblade @runthinkwrite
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@coachblade @jordanbpeterson @Riley_Gaines_ That this happened on a university campus in the United States in this day and age just astounds me. The lack of tolerance for viewpoint diversity and the mob behavior by a sizable segment of the student population is diametrically opposed to everything a university stands for.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 14/14.In summary.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport 2/14.Each picture is rather self explanatory. This first one explains that I know of 40 separate peer reviewed papers in sports science, physiology, or medical related journals showing that transwomen retain male athletic advantages even with "gender affirming hormone therapy"
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@runthinkwrite I have heard from professors, teachers, athletes, coaches, and athletic department personnel at all levels (in the US) that they are afraid to speak against trans inclusion in sports even though their opposition is based on solid biological principles. Cancel culture is real.
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@MaryOConnorMD @jwsenefeld @DrMJoyner Add these three papers to the evidence from @jwsenefeld and colleagues who showed that boys as young as 7 years old run faster and jump farther than girls, and there is a very solid base of evidence that sex matters in sports even before puberty.
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@SwipeWright @washingtonpost My only real problem with this piece is that all levels of female sports should be free from males, not just elite.
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@DrMJoyner @jwsenefeld @SKHunterPhD @hoovlet @MaryOConnorMD @Martina @KimJonesICONS @Hogshead3Au Just FWIW, my paper "Sex-based differences in track running distances of 100, 200, 400, 800, and 1500m in the 8 and under and 9–10-year-old age groups" should be coming out in the European Journal of Sport Science next week. We report that boys run 2.9-6.7% faster than girls.
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@MaryOConnorMD @jwsenefeld @DrMJoyner This adds to very recently published evidence that boys swim faster than girls before puberty.
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@MaryOConnorMD @jwsenefeld @DrMJoyner We have also recently demonstrated that boys run faster than girls before puberty.
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@CarilynJohnson This is just so wrong. He could never have made pro hockey as a man, but yet makes it onto a women’s pro hockey team. That should say all that needs to be said about unfair retained male advantages.
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@FondOfBeetles Every semester in my class we measure muscle strength, anaerobic power, and VO2max. And every semester the men have statistically higher values than the women, both in absolute measurements and when measured relative to body mass. But, sure, male advantages are a social construct.
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@icons_women You have got to be kidding me!! How can any reasonable person think that male bodies do not have inherent athletic advantages in jiu jitsu when competing against females?.
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@fem_mb I’m still presenting on Wednesday night for @WomensLibFront. They are absolutely awesome for stepping up and hosting my presentation at the original time. I will also present on Thursday night for Tewskbury library. Double the pleasure, double the fun!.
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Excellent piece by @georgeabtsports on how far reaching the damage, and the number of females player that are impacted, by including a single male athlete in NCAA volleyball. @sharrond62 @coachblade @mara_yamauchi @icons_women @ICFSport .
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@CarilynJohnson The argument that "transwomen aren't winning" is akin to saying "using performance enhancing drugs is only cheating if the person wins" or "using a taxi for 10 miles of a marathon is only cheating if the person wins.".
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This is a really good article about Imane Khelif’s abrupt cancellation of a speech at The Oxford Union, which coincided suspiciously with a great letter by @mara_yamauchi detailing lots of really good questions that Khelif really should be asked and expected to answer.
"The International Olympic Committee has violated all sports rules by putting a man against a woman. Thomas Bach himself bears direct responsibility for this, as he personally lobbied for this to happen – for men to compete against women.".
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@runthinkwrite I think this is what’s known as a non sequitur “For example, if we start by acknowledging that some humans are born with ovaries and others with spermatozoa…”. Ovaries are analogous to testes, not sperm. And that’s just one of many fallacies in this tripe.
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“When coaches looked at me they didn’t see a winner, they saw a second and third place runner” because there were males in a girls race.@ICFSport @icons_women @coachblade @ChristianaADF This statement is powerful and why we need to #SaveWomensSports .
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 4/14.There are 18 research papers demonstrating that male advantages in lean body mass are not erased by 6 months-14 years of “Gender Affirming Hormone Therapy” in transwomen. 30-70% of male athletic advantages can be explained by the sex-based differences in lean body mass.
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@CarilynJohnson Women: Here is the research showing retained male advantages in body height, body mass, muscle mass, muscle strength, and VO2max. Them: Even though those factors typically provide male athletic advantages, you can’t prove they benefit transwomen in sport X.
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@iocmedia Maybe the IOC should acknowledge that there are, indeed, differences between males and females that influence athletic performance, and that transwomen are male and should not be allowed in the female sporting category (which are the girls' and women's categories).
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@MaryOConnorMD @jwsenefeld @DrMJoyner While some may argue that prepubertal sex based differences in sports performance are due to social, and not biological, factors. @JamesLNuzzo shows that differences in strength and flexibility have been consistent for over 4 decades and across cultures
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport 3/14.There are 9 peer reviewed scholarly papers by different groups of scholars that have evaluated the existing research and concluded that transwomen retain male athletic advantages. These scholars include @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld
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@cathydevine56 @icons_women @KimJonesICONS @ekreps @JimBUWDawg @boysvswomen @runthinkwrite @FondOfBeetles @jaketeater … this is really great news!
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@ReduxxMag @ThePublicaNow Obviously he owes his success to dedicated training, nutrition, coaching, male biology, and competing in the female category.
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@FondOfBeetles In other words, even if there is some loss of strength due to male-to-female transition, the male advantage is still much larger than the typical variation within championship winning women; right?.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 5/14.There are 8 papers demonstrating that 6 months – 14 years of “Gender Affirming Hormone Therapy” in transwomen does not erase the male advantages in grip strength. Grip strength is often used as reliable proxy for upper body strength
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@icons_women @usacycling I don’t understand how they can claim to be following the latest science and then use 24 months of T below 2.5 nmol/l as the threshold. No science shows that males become females at any T level.
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Starting on National Girls & Women in Sports Day, 1 tweet per day highlighting a research article showing that transwomen have retained athletic advantages over women (articles in no particular order). @icons_women #SaveWomensSports.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 6/14.One paper demonstrating that isometric and isokinetic thigh muscle strength was not reduced due to 1 year of “Gender Affirming Hormone Therapy” in transwomen and the strength in TW was ~50% higher than in comparable females
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@icons_women @NHIAA_LOA This entitled male displaced 1 girl from a varsity spot on her high school team. He displaced 1 girl from a gold medal, with downstream effects on silver and bronze, so 3 girls did not get the medal they should have. How many other females lost out on a competitive opportunity?.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 7/14.Two papers on transgender U.S. Air Force personnel, with one paper concluding that transwomen were still faster after 2 years of GAHT and the other paper concluding that TW still performed more sit ups after 3 years and more pushups after 4 years GAHT.
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1. 🧵a local high school is canceling varsity girls basketball because no juniors or seniors are going out for the team, and there is concern of fairness and safety for freshman and sophomore girls playing against upperclasswomen.@icons_women @Hogshead3Au @MaryOConnorMD.
Grand Island Senior High cancels 2024-25 varsity girls basketball schedule.
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This is a great explanation by the awesome @coachblade of how we have gotten to the point where there are known male athletes competing in women’s boxing, and the IOC is trying to justify it as fair competition.
"If someone had told me then that I would spend my post-menopausal years trying to convince people that men should not be competing in women’s sports, I would never have believed them." –@coachblade .
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@FondOfBeetles @SaveWomensSport @coachblade Another important statement from the decision “There is no serious debate that Title IX’s endorsement of sex separation in sports refers to biological sex.”.
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Yes! We need more current and former female athletes to speak up about the inherent unsafe and unfair policies that allow MALE transwomen to compete in female sports. @icons_women @SF_TERF_CENTRAL @coachblade @boysvswomen @Hogshead3Au @mara_yamauchi .
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As always, @DerryBanShee speaks clearly, plainly, and without malice as she explains that males (regardless of how they identify) do not belong in female sports. Girls and women deserve a fair playing field devoid of all male bodies.
Excellent interview by @DerryBanShee @fairplaywomen on why it is unfair and in some sports unsafe, for males to compete in the female category. From grass roots to elite, from @parkrunUK to Olympics, females want and deserve fair sport and results .
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 8/14.One cross-sectional paper showing that an average of 14 years “Gender Affirming Hormone Therapy” does not erase male advantages in VO2peak
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@garylfrancione @vaneijckorg I also think an over representation of liberalism among academics, with an ever growing proportion of leftist liberals rather than classical liberals, has contributed to the over emphasis of “lived experience” and “my truth” over a search for THE TRUTH.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 9/14.One cross sectional paper showing that after an average of 6 years of “GAHT” in purportedly athletic transwomen had higher jumping power, handgrip strength, absolute VO2max, and lung capacity than very fit women
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 11/14.No studies show a reduction in body height in adult males who undergo testosterone suppression with or without estrogen administration
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Very excited for this documentary to be broadcast on Sunday, November 17 at 9:00 PM ET. @icons_women @Riley_Gaines_ @PaulaYScanlan @ICFSport @SenatorRicketts @MaryOConnorMD @SF_TERF_CENTRAL @sharrond62 @mara_yamauchi @nebfamily .
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 12/14.Three papers showing that (combined) sex-based differences in body height are not erased with short term use of puberty blockers in adolescents, or puberty blockers and cross sex hormones starting in adolescents and continuing through early adulthood
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Thank you @SwipeWright for providing me an opportunity to share my observations about the differences in athletic performance between boys and girls before puberty. @icons_women @ICFSport @coachblade @DerryBanShee @mara_yamauchi @MaryOConnorMD @boysvswomen
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 10/14.One case study paper showing that gender affirming hormone therapy in a NCAA D1 TW swimmer (**cough** Lia Thomas **cough**) did not reduce performance as much as would be necessary to eliminate male advantage
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Another great meta analysis by @JamesLNuzzo confirming that even before puberty boys have strength advantages when compared to girls. And, undoubtedly, strength advantages translate into sports advantages. @icons_women @ICFSport @ADFLegal @DrMJoyner @sharrond62 @rosey_nz.
1. NEW #MetaAnalysis now @SportRxiv. On average, boys are physically stronger than girls, even before puberty. At all stages of development, the sex difference in strength is more pronounced in upper- than lower-limb muscles. This pre-print is currently undergoing peer review.
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@billoram @JimBUWDawg @Riley_Gaines_ @cathydevine56 @SwipeWright @FondOfBeetles @TLexercise @icons_women @ICFSport @Scienceofsport @runthinkwrite @DrMJoyner @jwsenefeld 13/14.Six papers showing that (combined) sex-based differences in lean body mass are not erased by short term use of puberty blockers in adolescents, or longer-term use of puberty blockers and cross sex hormones starting in adolescents and continuing through early adulthood
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Absolutely need to keep showing that males are displacing girls from sports awards and podiums #SaveWomensSports.
“I don’t think it’s fair at all.” . A 9th grade girl spoke to Central Oregon Daily News about boys in girls sports. Meanwhile, Lauren Rose of @OUTCentralOR claims allowing boys in girls sports “makes people feel safe to be themselves.” . Exactly which people feel safe Lauren?
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@Hogshead3Au @Scienceofsport @DrMJoyner @coachblade @TLexercise @FondOfBeetles @icons_women @MichelleNash45 @cathydevine56 @sharrond62 @mara_yamauchi I hope it's helpful. The truth is powerful. FWIW, there's currently another paper in review showing male advantages in the same age groups in shot put, javelin, and long jump. It's probably still a few months away from being published.
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@JimBUWDawg @coachblade In my Exercise Physiology class we study the physiological differences between men and women and how the differences affect sports performance. After doing so, not a single student has supported transwomen in women’s sports.
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Starting on National Girls & Women in Sports Day, 1 tweet per day highlighting a research article showing that transwomen retain advantages that give them an athletic advantage over women (articles in no particular order). Day 2. @icons_women #SaveWomensSports.
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@SaveWomensSport Good quotes in this piece on FoxNews from @TLexercise "The big problem right now is that the [hormone] therapy itself doesn't really remove the advantage to an extent that you can claim that fairness has been achieved".
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On 10/2 at 7pm ET, I’m giving a public Zoom talk through the library of Tewksbury, MA called “Males and Females are Different and that Matters in Sports”. Fairness and safety matters to women’s sports, and we need science to inform our policy choices….
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@ithompsonfdn @mara_yamauchi This study was flawed from its inception when Hamilton started recruiting subjects to prove that transwomen do not have an athletic advantage.
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@sharrond62 @MailOnline This is surprising no one who understands the inherent anatomical and physiological differences between males and females.
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@coachblade @CoachFausett Thank you coaches for standing up and speaking out! I know some other coaches that also think sports should be separated based on sex, but are hesitant to do so because of cancel culture. Hopefully they will draw courage from these examples.
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@IWF @Riley_Gaines_ @Martina @paytonmcnabb_ @PaulaYScanlan @JenniferSey @bfheartwarrior @macypetty0416 @Hogshead3Au @DexterSaxapahaw @KDansky A cowardly act by those who obviously don't have the 🏀⚾️s to debate you face to face and are threatened by REAL women.
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@fem_mb The agreement should be that the teacher is correctly teaching biological science and the students need to come to grips with reality.
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This review came out after this thread was initially tweeted. ". transgender women who completed masculinizing puberty prior to starting GAHT show some legacy effects of testosterone in strength and muscle mass. " Additional https://pubmed.ncbi.nlm.nih.gov/37057897/.
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I’m so glad @ChristianaADF and @ADFLegal are helping these, and all, young women to have the opportunity for safe and fair sports. I’m glad @barbara_ehardt has the backbone to get things moving in state government to #SaveWomensSports .I’m glad @coachblade has spoken up.
Women deserve the chance to win in their own sports. We're grateful the 2nd Circuit will allow our case, Soule v. Connecticut Association of Schools, to continue.
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I came across another scathing evaluation of the IOC funded study on transgender athletes. @MaryOConnorMD @icons_women @KimJonesICONS @cathydevine56 @TLexercise @Scienceofsport @boysvswomen @rosey_nz @DerryBanShee @coachblade @sharrond62 @Riley_Gaines_ .
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2) 23 primary research articles and 3 scholarly reviews showing that GAHT in transwomen (puberty blockers, antiandrogens, testosterone suppression, cross sex hormones, or combinations), do not eliminate male advantages in body height, lean body mass, muscle strength, or VO2max.
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@icons_women Isn’t the IOC supposed to be guided by science and medical evidence regarding transwomen participation in sports? .I guess the IOC just didn’t see the statement from The Association of Ringside Physicians opposing transwomen in women’s boxing.
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Starting on National Girls & Women in Sports Day, 1 tweet per day highlighting a research article showing that transwomen retain advantages that give them an athletic advantage over women (articles in no particular order). Day 9. #SaveWomensSports @icons_women ,@ICFSport.
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I first saw this 2 years ago, and it’s just as relevant today as it was then. #SaveWomensSports #standwithrileygaines
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