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How does hormone transition in transgender women change body composition, muscle strength and haemoglobin? Systematic review with a focus on the implications for sport participation

Overview of attention for article published in British Journal of Sports Medicine, March 2021
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • One of the highest-scoring outputs from this source (#6 of 6,020)
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Mentioned by

news
71 news outlets
blogs
5 blogs
twitter
2589 tweeters
facebook
2 Facebook pages
wikipedia
1 Wikipedia page
reddit
7 Redditors
video
5 video uploaders

Citations

dimensions_citation
17 Dimensions

Readers on

mendeley
119 Mendeley
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Title
How does hormone transition in transgender women change body composition, muscle strength and haemoglobin? Systematic review with a focus on the implications for sport participation
Published in
British Journal of Sports Medicine, March 2021
DOI 10.1136/bjsports-2020-103106
Pubmed ID
Authors

Joanna Harper, Emma O'Donnell, Behzad Sorouri Khorashad, Hilary McDermott, Gemma L Witcomb

Abstract

ObjectivesWe systemically reviewed the literature to assess how long-term testosterone suppressing gender-affirming hormone therapy influenced lean body mass (LBM), muscular area, muscular strength and haemoglobin (Hgb)/haematocrit (HCT).Design Systematic review.Data sources Four databases (BioMed Central, PubMed, Scopus and Web of Science) were searched in April 2020 for papers from 1999 to 2020.Eligibility criteria for selecting studies Eligible studies were those that measured at least one of the variables of interest, included transwomen and were written in English.Results Twenty-four studies were identified and reviewed. Transwomen experienced significant decreases in all parameters measured, with different time courses noted. After 4 months of hormone therapy, transwomen have Hgb/HCT levels equivalent to those of cisgender women. After 12 months of hormone therapy, significant decreases in measures of strength, LBM and muscle area are observed. The effects of longer duration therapy (36 months) in eliciting further decrements in these measures are unclear due to paucity of data. Notwithstanding, values for strength, LBM and muscle area in transwomen remain above those of cisgender women, even after 36 months of hormone therapy.Conclusion In transwomen, hormone therapy rapidly reduces Hgb to levels seen in cisgender women. In contrast, hormone therapy decreases strength, LBM and muscle area, yet values remain above that observed in cisgender women, even after 36 months. These findings suggest that strength may be well preserved in transwomen during the first 3 years of hormone therapy.

Twitter Demographics

The data shown below were collected from the profiles of 2,589 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 119 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 119 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 19 16%
Student > Master 11 9%
Student > Ph. D. Student 9 8%
Student > Postgraduate 7 6%
Researcher 6 5%
Other 21 18%
Unknown 46 39%
Readers by discipline Count As %
Sports and Recreations 18 15%
Medicine and Dentistry 16 13%
Nursing and Health Professions 8 7%
Social Sciences 5 4%
Agricultural and Biological Sciences 4 3%
Other 21 18%
Unknown 47 39%

Attention Score in Context

This research output has an Altmetric Attention Score of 2776. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 08 August 2022.
All research outputs
#1,962
of 21,759,476 outputs
Outputs from British Journal of Sports Medicine
#6
of 6,020 outputs
Outputs of similar age
#129
of 317,108 outputs
Outputs of similar age from British Journal of Sports Medicine
#1
of 82 outputs
Altmetric has tracked 21,759,476 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 6,020 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 59.6. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 317,108 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 82 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.