Lauro Vianna
lcvianna.bsky.social
Lauro Vianna
@lcvianna.bsky.social
Integrative Physiologist
Reposted by Lauro Vianna
A woman in Brazil learned she had her twin brother’s XY chromosomes in her blood after having a miscarriage. Read more from Live Science (https://ow.ly/317y50XukKf) and the #ISpyPhysiology blog (https://ow.ly/Aq1E50XukKg) to learn more about how this happens. #chimera 🧪
📷: iStock
November 26, 2025 at 5:01 PM
Reposted by Lauro Vianna
Studying alligator exercise performance means you have to be on guard for escape attempts, and know how to coax the gator back into the pool. 🐊 Learn how APS member Dane Crossley does it and what this nontraditional model can tell us about our own health: ow.ly/VR7X50X0qXI 🧪
September 29, 2025 at 4:00 PM
Reposted by Lauro Vianna
September 28, 2025 at 1:59 PM
Excited to share our new article just published in American Journal of Physiology – Heart and Circulatory Physiology!
Grateful to my collaborators for their dedication and contributions to this work.

🔗 journals.physiology.org/doi/full/10....
Sex differences in ventricular repolarization during trigeminal nerve stimulation: insights into QT/RR hysteresis | American Journal of Physiology-Heart and Circulatory Physiology | American Physiolog...
Cardiac repolarization (i.e., QT interval) is inversely related to heart rate (HR). However, during diving-induced bradycardia, the QT response is delayed, a phenomenon known as QT/RR hysteresis, poss...
journals.physiology.org
September 19, 2025 at 1:06 AM
Honored that our article was highlighted with an Editorial Focus in AJP-Heart and Circulatory Physiology.
Many thanks to my collaborators and to the authors of the editorial for their thoughtful perspective!

🔗 journals.physiology.org/doi/abs/10.1...
Beyond the QT interval: how QT/RR hysteresis may reveal a sex-dependent hidden risk for cardiac arrhythmias | American Journal of Physiology-Heart and Circulatory Physiology | American Physiological S...
journals.physiology.org
September 19, 2025 at 1:00 AM
Honored to see our recent work on autonomic integration during the human diving reflex featured in an editorial at the Journal of Applied Physiology. ✨
The piece highlights how central command acts as the “navigator” in the storm of autonomic reflexes.

journals.physiology.org/doi/abs/10.1...
Central Command: The Navigator in the Storm of Autonomic Reflexes During Simulated Diving | Journal of Applied Physiology | American Physiological Society
journals.physiology.org
September 13, 2025 at 10:24 PM
Working on a Sunday doesn’t mean you’re fast.
Sometimes it just means you’re 36 days late to tell us our paper won’t even be sent for peer review.
Thanks, European Journal of Sport Science, for reminding us how slow and opaque academic publishing can still be!
@eurojsportscience.bsky.social
August 3, 2025 at 10:43 PM