Luca T
@lucat.bsky.social
Quiet & curious. Integrative physiology & coaching. Playing with PowerMeters & muscle oxygenation (NIRS). Trying to manage complexity @ ensō endurance
Reposted by Luca T
New paper with @drphilipskiba.bsky.social is now out: journals.humankinetics.com/view/journal...
We took a new approach to modeling the power duration curve in cyclists using functional principal component analysis.
We took a new approach to modeling the power duration curve in cyclists using functional principal component analysis.
journals.humankinetics.com
August 19, 2025 at 4:41 PM
New paper with @drphilipskiba.bsky.social is now out: journals.humankinetics.com/view/journal...
We took a new approach to modeling the power duration curve in cyclists using functional principal component analysis.
We took a new approach to modeling the power duration curve in cyclists using functional principal component analysis.
Reposted by Luca T
A new study in 59 top European Crossfit Open competitors shows poor individual agreement between mNIRS breakpoint in an incremental cycling test, and 3min all-out CP cycling test ± >100W
(paper link 👇)
(paper link 👇)
January 10, 2025 at 5:10 AM
A new study in 59 top European Crossfit Open competitors shows poor individual agreement between mNIRS breakpoint in an incremental cycling test, and 3min all-out CP cycling test ± >100W
(paper link 👇)
(paper link 👇)
Reposted by Luca T
Pick a threshold, whichever one you want!
Getting a number is cheap. Knowing what the number means and what to do with it is far more valuable
(ignore the VTs, they weren't determined to gold standard, but directly true)
Getting a number is cheap. Knowing what the number means and what to do with it is far more valuable
(ignore the VTs, they weren't determined to gold standard, but directly true)
To elaborate, here’s a visualization from @jemarnold.bsky.social illustrating the number of “thresholds” and how they stack one on top of another. This is what I mean by measuring the width of a mountain peak, at what level do you measure the “width” at what threshold does the peak start ?
December 15, 2024 at 9:22 PM
Pick a threshold, whichever one you want!
Getting a number is cheap. Knowing what the number means and what to do with it is far more valuable
(ignore the VTs, they weren't determined to gold standard, but directly true)
Getting a number is cheap. Knowing what the number means and what to do with it is far more valuable
(ignore the VTs, they weren't determined to gold standard, but directly true)
Reposted by Luca T
Alternatively, if we tell a computer (or a pattern seeking human brain) to find a breakpoint in continuous data, it will find one. Regardless if/what that BP represents physiologically. Hence, knowing why we're looking for a BP and what to do with that information is where the value is
To elaborate, here’s a visualization from @jemarnold.bsky.social illustrating the number of “thresholds” and how they stack one on top of another. This is what I mean by measuring the width of a mountain peak, at what level do you measure the “width” at what threshold does the peak start ?
December 15, 2024 at 9:28 PM
Alternatively, if we tell a computer (or a pattern seeking human brain) to find a breakpoint in continuous data, it will find one. Regardless if/what that BP represents physiologically. Hence, knowing why we're looking for a BP and what to do with that information is where the value is
Reposted by Luca T
Is muscle oxygenation mNIRS symmetrical in both legs during cycling? 🤔 We often assume it is. But can we use one leg to represent the responses in both legs?
Recently, two studies have come out examining bilateral reliability in one wearable NIRS: Moxy monitor
What does the research suggest? 📚🧵👇
Recently, two studies have come out examining bilateral reliability in one wearable NIRS: Moxy monitor
What does the research suggest? 📚🧵👇
December 7, 2024 at 9:42 PM
Is muscle oxygenation mNIRS symmetrical in both legs during cycling? 🤔 We often assume it is. But can we use one leg to represent the responses in both legs?
Recently, two studies have come out examining bilateral reliability in one wearable NIRS: Moxy monitor
What does the research suggest? 📚🧵👇
Recently, two studies have come out examining bilateral reliability in one wearable NIRS: Moxy monitor
What does the research suggest? 📚🧵👇
Reposted by Luca T
Ok, as promised, Let's do a short 🧵 on glucose monitoring in athletes without diabetes. It's for all y'all who have been buying these monitors and then coming in to see us, freaking out because you think you are diabetic. Check out this data from Marliss et al. (1990). Yes, *1990*. (1/4)
December 3, 2024 at 4:03 PM
Ok, as promised, Let's do a short 🧵 on glucose monitoring in athletes without diabetes. It's for all y'all who have been buying these monitors and then coming in to see us, freaking out because you think you are diabetic. Check out this data from Marliss et al. (1990). Yes, *1990*. (1/4)
Reposted by Luca T
Key figure from a recent publication written by our group exploring the differences between recreational athletes & their elite counterparts. We used the Joyner model for performance to highlight some key phenotypic adaptations between these individuals collated from the literature.
t.co/F2lKyzzghp
t.co/F2lKyzzghp
November 18, 2024 at 1:44 AM
Key figure from a recent publication written by our group exploring the differences between recreational athletes & their elite counterparts. We used the Joyner model for performance to highlight some key phenotypic adaptations between these individuals collated from the literature.
t.co/F2lKyzzghp
t.co/F2lKyzzghp
Reposted by Luca T
Ok team, let’s discuss your training and COVID. You need to stop trying to negotiate with your coach. COVID remains a hazard to your heart, lungs and blood vessels. Despite the media telling you iT’s MiLd, there is still a substantial risk if you exercise while acutely ill, even if you *feel*… (1/n)
August 30, 2024 at 6:44 PM
Ok team, let’s discuss your training and COVID. You need to stop trying to negotiate with your coach. COVID remains a hazard to your heart, lungs and blood vessels. Despite the media telling you iT’s MiLd, there is still a substantial risk if you exercise while acutely ill, even if you *feel*… (1/n)
Reposted by Luca T
A reappraisal of HIIT from the IJSPP #1 dl'd paper (2023) using the work-balance model and better (correct?) anchor to normalize intensity...
Conclusion: Competitive XC skiers have longer TTE and accumulate more Odef2 than recreational XC skiers
t.ly/e95Wl
1/n
Conclusion: Competitive XC skiers have longer TTE and accumulate more Odef2 than recreational XC skiers
t.ly/e95Wl
1/n
January 15, 2024 at 5:02 AM
A reappraisal of HIIT from the IJSPP #1 dl'd paper (2023) using the work-balance model and better (correct?) anchor to normalize intensity...
Conclusion: Competitive XC skiers have longer TTE and accumulate more Odef2 than recreational XC skiers
t.ly/e95Wl
1/n
Conclusion: Competitive XC skiers have longer TTE and accumulate more Odef2 than recreational XC skiers
t.ly/e95Wl
1/n
Reposted by Luca T
Exercise physiologists: A power law fits long duration speed-duration data well in part because the value of the exponent changes. It changes because exercise intensity domains exist, and the exponent is physiologically meaningless. Thank you for listening to my TED talk.
November 24, 2023 at 3:21 PM
Exercise physiologists: A power law fits long duration speed-duration data well in part because the value of the exponent changes. It changes because exercise intensity domains exist, and the exponent is physiologically meaningless. Thank you for listening to my TED talk.