Senior Researcher | Exercise Physiology, Athlete Monitoring & High Performance Sport | FADEUP (U. Porto)
Portugal
Joined August 2009
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Rodrigo Zacca retweeted
Now available ahead of print: The Underappreciated Methods Section—What Is Needed, and How Is It Best Presented?, by David B. Pyne and Naroa Etxebarria. doi.org/10.1123/ijspp.2026-0…
Rodrigo Zacca retweeted
This could be a game changer.
Researchers just published a paper on a smart ring that can continuously monitor glucose, ketones, vitamin C, uric acid, lactate, and alcohol through sweat.
Rodrigo Zacca retweeted
El último baile está por comenzar. Imposible no emocionarse.
Gracias por todo, capitán
Rodrigo Zacca retweeted
Champion of the World.
From the blue carpet in Pontevedra, Vasco Vilaca reflects on what it took to become the 2026 World Champion 🏆🇵🇹
🔗 Watch the full interview on World Triathlon’s YouTube channel
#Triathlon #WorldChampion
Rodrigo Zacca retweeted
Two-time World Champion.
Cassandre Beaugrand reflects on reclaiming the World Title in Pontevedra and adding another chapter to her incredible story ✨
🔗 Watch the full interview on World Triathlon’s YouTube channel
#Triathlon #WorldChampion
The Underappreciated Methods Section—What Is Needed, and How Is It Best Presented?
doi.org/10.1123/ijspp.2026-0…
Lecture recordings 📹 FREE ✅ AVAILABLE: XVth International Symposium on Biomechanics and Medicine in Swimming — BMS2026, Porto Alegre, Brazil, from September 7-11, 2026.
youtube.com/playlist?list=PL…
New study: Merelim, A.S., Santos, Â.P., Zacca, R. et al. The triad of muscle health: gut–muscle axis in the context of sarcopenia and exercise, a narrative review. Sport Sci Health 22, 358 (2026). link.springer.com/article/10…
Free download: Network-based performance analysis of multidimensional performance characteristics in trained male youth combat athletes. Front. Sports Act. Living 8:1932190. doi: 10.3389/fspor.2026.1932190 With @chainok_paul and colleagues. @FrontSportsAL
Rodrigo Zacca retweeted
Mano os cães militares são impressionante , como são treinados para proteger seu tutor não abaixam a guarda enquanto o soldado descansa. isso é maravilhoso
Rodrigo Zacca retweeted
"Fatmax occurred at a significantly lower exercise intensity than LT/GET, by approximately 5.78% ̇VO2max, 4.75 mL/kg/min ̇VO2, 22 W, or 11 beats/min"
Important new paper shows #FATmax typically occurs ~11 bpm *below* the first threshold, i.e. at the bottom of zone 1.
If improving metabolic fitness (& health!) is the goal, keep it eazzzy! 🔥
The Agreement between Fatmax and the Gas-Exchange and Blood Lactate Thresholds: A Systematic Review and Meta-Analysis
okt.to/cvbzeT
Rodrigo Zacca retweeted
Swimming research from the week…
A busy one!
1. Fascinating work about how swimmers manage their skills throughout open water races.
tinyurl.com/mvd29k7s
@BouvetAntoine1
@RobiinRoad
@NicoBideau
2. Multidimensional in-water and on-land determinants of 100-m swimming performance across all four strokes in age-group swimmers
tinyurl.com/mryn9car
@RodrigoZacca
@RicferJ
3. Correclation between strength and power measurements and performance over 100 yards across all 4 strokes.
tinyurl.com/2p9wn6kz
4. Stability in technical parameters is related to better breaststroke performances.
tinyurl.com/36z2h7ur
@bjorno_h
@IngeborgLjodal
@GonjoTomohiro
@LudovicSeifert
5. Lactate-based profiles following a 7x200-meter step test predict 200-m competition performance.
shorturl.at/Fipna
@Mikepeyrebrune
@A_Toubekis
6. Framework for performance science with elite athletes.
tinyurl.com/2ny2eyfj
@augbarbosa
7. Effective underwater kicking comes from creating force through the hips and knees, and as well as managing force throughout the entire body.
tinyurl.com/mr2sbny5
8. Hand force asymmetries can vary across individuals, paces, and calculation methods.
Getting more of the picture can be valueable before making the decision to intervene.
shorturl.at/AnLNF
@TiagoMCSBarbosa
@jorgestrela
9. Metabolic and neuromuscular characteristics underpin open water performance in age group swimmers, as determined by performance network analysis.
tinyurl.com/2spfp433
@RodrigoZacca
8. More force in less time means more speed during the initial portion of a start.
tinyurl.com/ycyudzfx
@RodrigoZacca
9. Artificial intelligence and swimming biomechanics.
@RicferJ
@gbiomech
tinyurl.com/2be6fajm
10. High load strength training does not impair the energetics of subsequenct moderate intensity swimming.
shorturl.at/j8bzT
@GavriilArsonia1
@RodrigoZacca
@A_Toubekis
11. Training relay starts leads to better relay starts.
shorturl.at/k6wzW
Rodrigo Zacca retweeted
Two to make it true! Cassandre Beaugrand is your 2026 WTCS World Champion for the second time! 🏆🇫🇷
#Triathlon #WTCFPontevedra #WorldChampion
Rodrigo Zacca retweeted
Post-race reaction from your World Champion Queen Cassandre Beaugrand!
Missed the action? Rewatch the incredible women’s #WTCFPontevedra 🇪🇸 and more on TriathlonLive ▶️
Rodrigo Zacca retweeted
ChatGPT has now a big problem.
Researchers at Oxford and Cambridge exposed a massive threat to large language models.”
They call it “model collapse."
Internet ecosystem is rapidly changing, and generative AI will soon contribute much of the text found online. This forces us to consider what happens to future iterations like gpt-n when they are trained on data scraped from the web that was already generated by an llm.
According to the research, indiscriminately using model-generated content in training causes "irreversible defects" in the resulting ai. the model loses the "tails of the original content distribution." in other words, it begins to forget the creative, fringe, and unique nuances of actual human writing, collapsing into a repetitive echo chamber.
This isn't just a chatgpt issue.. the researchers built theoretical intuition showing this collapse is ubiquitous across learned generative models, occurring in large language models as well as in variational autoencoders and gaussian mixture models.
Tech companies rely on scraping the internet for large-scale data to build smarter models. However, the paper warns that if we want to sustain the benefits of training on web data, model collapse must be taken seriously.
Ultimate takeaway? data collected from genuine human interactions is going to become increasingly valuable in a web filled with ai content.
Rodrigo Zacca retweeted
Now available ahead of print: Over a Decade of Race Dynamics in Marathon Swimming: Pacing Tipping Points Across Olympic Games (2012–2024) and World Aquatics Championships (2013–2025), by Rodrigo Zacca and colleagues.
doi.org/10.1123/ijspp.2025-0…
Rodrigo Zacca retweeted
Research involving 19 cyclists shows that power output at RCP calculated using a step-ramp-step protocol is lower than uncorrected estimates. This highlights the impact of methodology on determining exercise thresholds.
bit.ly/4z0uxlj
Incremental Swimming Test Provides Key Determinants of 200-m Front Crawl Race Performance.
by Giannis Nikitakis, Michael Peyrebrune and @AToubekis @IJSPPjournal
doi.org/10.1123/ijspp.2026-0…