testosterone and haemoglobin levels are not the only differences though, there a shitton of parameters that differ between how a male and female body develops, just saying that those 2 parameters are not effected (testosterone was expected since as far as i know you take drugs to suppress it when you change gender) isn't as saying that there's no difference at all
the linked paper itself says the research is inconclusive and the data they have is limited.
english is not my first language,but i'm sure i'm missing something in this study...it seems to imply that their prowess didn't get worse after turning..which would actually argue both pro and against making them compete with cisgender athletes..since from a point of view means that whatever prowess they derived from previously being of another gender was not affected by the loss of testosterone and muscle mass...and on the other it kinda implies that those things that they lost in the turning process were not crucial to their performances..but that would go against everything we know about testosterone.
that being said, i'm nowhere near an expert in the field, so all i can say is that by admission of the paper itself, the research is very limited and ,to quote the paper "
"the author makes no claims as to the equality of performances, pre and post gender transition, in any other sport"
this one isn't a study per se..according to the paper the authors just collected other research articles on the matter, selected the ones that they deemed worthy..and again for their own admission
"It is therefore difficult to draw any definite conclusions because of the lack of quantitative research. By its very nature, the findings from qualitative research cannot be generalised but the findings can be used to form a platform from which generalisations can be made "
also,contrary to their "conclusion" part,when they actually start discussing the thesis there seems little to be about actual performance
"The research articles reviewed here described a generally negative experience of sport participation and sport-related physical activity for transgender individuals. It was evident from these studies that transgender people are facing barriers when engaging in competitive sport and sport-related physical activity. In relation to sport-related physical activity, lack of accessibility to an inclusive and comfortable environment appeared to be the primary barrier to participation. Charities and support organisations working with transgender people should consider developing campaigns to raise awareness about different gender identities. Leisure centres should also be made more aware of potential gender differences (i.e. via training and greater information provision) and be given advice on how to make such environments more inclusive of transgender people (e.g. gender neutral changing facilities with cubicles). In relation to competitive sport participation, the findings from this systematic review suggest that the requirements that transgender competitive sport policies place on competitors were instrumental in transgender athletes' negative experiences. "
when it starts talking about actual body changes goes back focusing mainly on testosterone..strange thing is that it seems to review something similiar,if not the same paper,linkedbefore, but here it says that their performances decreased with the lack of testosterone..which would make more sense so I probably just read the other paper wrong?
"To date, Harper's study [
72] is the only one to directly explore androgenic hormones and athletic ability. The aim of the study was to explore the long-distance (5–42 km) running times of eight transgender female individuals pre- and post-testosterone suppression. It was found that post-testosterone suppression running times were significantly slower in comparison to pre-testosterone suppression. Harper stated that owing to reductions in testosterone and haemoglobin, transgender female individuals post-transition would have the same endurance capabilities as a cisgender female individual. However, the sample size was very small (
n = 8) and participants were asked to self-report their race times, which might have been subject to recall or social desirability bias. "
then it seems to go against that same study saying
"On average, men perform better than women in sport; however, no empirical research has identified the specific reason(s) why. Based mainly on indirect research with cisgender people, it is commonly believed that androgenic hormones (specifically high testosterone levels) confer an advantage in competitive sports (i.e. enhance endurance, increase muscle mass) and, while this belief has informed several sporting policies, testosterone may not be the primary, or even a helpful, marker in determining athletic advantage "
so it's not testosterone in the end?
and it concludes with another "data is inconclusive" part like the others
"When it is safe and fair to permit a transgender person to compete in sport in line with their experienced gender? At the current time, this is a difficult issue to address considering that there is a lack of direct and consistent physiological performance-related data with transgender people, which is preventing a consensus from being made as to whether transgender people (especially transgender female individuals) do or do not have an athletic advantage. It may be sensible to suggest that until there are direct and consistent scientific data to suggest that transgender competitors have an advantage, transgender people should be allowed to compete in accordance with their gender identity with no restrictions "
so,in the end, those linked studies aren't really as definitive as it seems from that post and the issue seems to be resumable with "we don't really know what gives male bodies the advantages clearly verifiable with statistical data,it might be just testosterone but we are not really completely sure if there are other factors, since we don't have enough datawe suggest that transgender atheletes shouldn't be discrimined based on incomplete data"
which is a fair assessment, but doesn't make anyone that thinks otherwise a transphobe.