When you account for muscle mass, trans women, cis women, and cis men have about the same heart and lung fitness level — even if their raw numbers look different.

57

Pro

0

Against

Evidence from Studies

Supporting (1)

57

Community contributions welcome

57

Cardiopulmonary capacity and muscle strength in transgender women on long-term gender-affirming hormone therapy: a cross-sectional study

Cross-Sectional Study

Human

2022 Nov

The study found that when you adjust fitness levels for lean body mass, transgender women have similar heart and lung performance to cisgender women and men.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Cardiopulmonary capacity and muscle strength in transgender women on long-term gender-affirming hormone therapy: a cross-sectional study

Score: 57

DOI: 10.1136/bjsports-2021-105400

Similar Assertions

For transgender women on long-term hormone therapy, how well their bodies use oxygen during exercise is closely linked to their muscle mass relative to height — but this doesn’t seem to be the case for cisgender men or women.

57

0

92%

Trans women who've been on hormone therapy for years can take in more oxygen during intense exercise than cis women, but less than cis men — putting their heart and lung fitness somewhere in the middle.

57

0

86%

Trans women on long-term hormone therapy might have similar oxygen levels and fitness as cis women, even after going through male puberty.

1

0

79%