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Reposted by Billy Sperlich

Benedikt Meixner @benemeixner.bsky.social · 30/06/2025

#Durability ≠ #Fatigability ≠ #Repeatability ≠ #Resilience. Our JAP Viewpoint (accepted!) dives into why these distinct concepts matter in endurance research. Grateful for the collab with Michael J Joyner + @billysperlich.bsky.social. Let’s discuss at #ECSS2025 or during the Tour de France!

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Reposted by Billy Sperlich

Benedikt Meixner @benemeixner.bsky.social · 25/02/2025

Zone2 training may not deliver the same benefits for everyone. Our new study found substantial interindividual variability in physiological responses, even among trained cyclists, indicating that personalized intensity prescriptions are necessary. @billysperlich.bsky.social doi.org/10.1155/tsm2...

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Billy Sperlich @billysperlich.bsky.social · 14/01/2025

Cool, will use in next Physiology class - perfect timing!

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Billy Sperlich @billysperlich.bsky.social · 12/01/2025

Haha, now we know - but had my feelings on this one earlier;)

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Reposted by Billy Sperlich

Nature @nature.com · 10/01/2025

The world doesn't immediately fall apart at the 1.5 °C limit, but experts say we are "reaching the end of what we thought was a safe zone for humanity". www.nature.com/articles/d41...

nature.com

Earth breaches 1.5 °C climate limit for the first time: what does it mean?

The threshold has been exceeded for only one year so far, but humanity is nearing the end of what many thought was a ‘safe zone’ as climate change worsens.

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Billy Sperlich @billysperlich.bsky.social · 10/01/2025

Was ist die maximale Sauerstoffaufnahme – & wie lässt sich die #VO2max steigern? In @zeitonline.bsky.social beleuchten wir warum #VO2max ein Schlüssel zur Leistungsfähigkeit & Gesundheit ist und sprechen über 🫁, ❤️, 💪 , effektive Trainingsmethoden & praktische Tipps. Allℹ️👇 www.zeit.de/sport/2024-1...

zeit.de

VO₂max : So drehen Sie an der magischen Zahl des Sports

Kein Wert korreliert so stark mit der Lebenserwartung wie der VO₂max-Wert. Das Gute: Man kann ihn steigern und sein Sterberisiko senken. Und das ist gar nicht so schwer.

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Billy Sperlich @billysperlich.bsky.social · 20/12/2024

I still advocate open-access publishing. But we urgently need better regulation. Right now, the major beneficiaries are large publishers. In Germany alone, we are spending millions of taxpayer euros merely to “flip a Word file into a PDF” - and that’s not sustainable.

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Billy Sperlich @billysperlich.bsky.social · 20/12/2024

🏔️ Information Overload: As the study below illustrates, the sheer volume of publications has grown so large that even specialists or expert practitioners struggle to keep up. My original goal - making knowledge more accessible -has, in some ways, backfired.

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Billy Sperlich @billysperlich.bsky.social · 20/12/2024

🚀 Skyrocketing Costs: What once cost <€1,000 to convert a Word file into a PDF with a DOI now easily surpasses €4,000. The process itself hasn’t changed - it’s still just flipping a Word file into a PDF- yet the publishing industry has turned it into an expensive mega-market.

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Billy Sperlich @billysperlich.bsky.social · 20/12/2024

👉 10–15 years ago, I was a strong proponent of open access publishing. My reasoning was straightforward: practioners outside of academia should not have essential knowledge locked behind paywalls. However, my perspective has shifted due to two main factors:

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Billy Sperlich @billysperlich.bsky.social · 18/12/2024

Carbon monoxide inhalation for endurance gains? Minor benefits, but huge risks—hypoxia, organ damage, even death—and unknown long-term effects. A global team urges a ban to safeguard athletes & fairness. Read more 👇 onlinelibrary.wiley.com/doi/10.1111/... @hajoseppelt.bsky.social #wada #antidoping

onlinelibrary.wiley.com

Repeated Carbon Monoxide Inhalation in Sports: A New Frontier or a Dangerous Gamble?

Click on the article title to read more.

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Billy Sperlich @billysperlich.bsky.social · 22/10/2024

🆕In @JPhysiol we challenge strict standardization in exercise physiology and promote a flexible, blended approach. Combining classical methods with modern tech like #AI and #wearables improves threshold assessments while balancing accuracy & practicality....

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Billy Sperlich @billysperlich.bsky.social · 30/09/2024

Honestly, this is getting crazy. #OpenAccess expands knowledge sharing, but the rising publication fees pose a significant barrier for many researchers, especially those without institutional funding. We must find a balance between access and affordability....

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Billy Sperlich @billysperlich.bsky.social · 24/09/2024

@PeterDuking and I jumped into the intriguing debate about "Technological advances in elite sport: If we draw a line, where would we stop?" sparked by @BorjaMunizP, Yannis Pitsiladis & @DrMJoyner in @japplphysiol Where would you...

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Billy Sperlich @billysperlich.bsky.social · 24/09/2024

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Billy Sperlich @billysperlich.bsky.social · 30/08/2024

3/3 We suggest implementing additional running sessions and modifying small-sided games to better balance workloads and improve non-starters' physical preparedness. 🙏 @philipp__kunz @PeterDuking @Uni_WUE

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Billy Sperlich @billysperlich.bsky.social · 30/08/2024

2/3 Our data showed that non-starters consistently experienced lower workloads, particularly in high-intensity activities during matches and compensation training. #football

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Billy Sperlich @billysperlich.bsky.social · 30/08/2024

1/3 🆕 study in @PLOS We aimed to compare the weekly training and match loads between starting and non-starting professional #soccer players and to identify variations across training modalities. All ℹ️👇https://pubmed.ncbi.nlm.nih.gov/39197027/

pubmed.ncbi.nlm.nih.gov

A comparative analysis of weekly internal and external wo...

By implementing a running-based regimen on matchday and M...

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Billy Sperlich @billysperlich.bsky.social · 27/08/2024

🆕 in @JPhysiol We discuss the challenges of standardizing #exercise physiology thresholds, emphasizing the need for flexible, problem-specific approaches that consider diverse populations and practitioner expertise. More info 👇 pubmed.ncbi.nlm.nih.gov/39190457

pubmed.ncbi.nlm.nih.gov

Madness or progress? The dilemma of standardizing exercis...

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Billy Sperlich @billysperlich.bsky.social · 27/07/2024

2/2 This typology limits the validity and comparability of research. We emphasize the need for a nuanced classification to improve the quality of biomolecular studies, particularly those investigating gene-phenotype relationships in athletes.

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Billy Sperlich @billysperlich.bsky.social · 27/07/2024

1/2 🆕collaboration with Magdalena Schellenberg & @MauriceZ36414 from @Unimaas, @unibt, @Uni_WUE highlights flaws in current sport typology systems, arguing that labeling athletes as "endurance" or "strength" oversimplifies their complex characteristics....

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Billy Sperlich @billysperlich.bsky.social · 26/07/2024

3⃣CGM didn't meet clinical accuracy for diabetic care 4⃣ Read & judge yourself whether CGM could be used by non-diabetic athletes tracking blood glucose. ‼️ Potential benefits of CGM in #sportsnutrition and physiology need more validation and rational justification.

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Billy Sperlich @billysperlich.bsky.social · 26/07/2024

1⃣ High individual variability of CGM vs BGM post-breakfast, pre-exercise, exercise, post-exercise 2⃣Post-Exercise Discrepancies: Largest differences observed post-exercise. #CGM #bloodglucose #diabetes

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Billy Sperlich @billysperlich.bsky.social · 30/05/2024

VLaMax has gained popularity among scientists & coaches for estimating anaerobic capacity through lactate production rates. Accurate testing & interpretation demand specific conditions & deep understanding of metabolic systems. Just few points to consider...

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Billy Sperlich @billysperlich.bsky.social · 22/04/2024

🗓️ Join @E_C_S_S Webinar on May 16th, 17:30 for ECSS SIG on Running Sciences chaired by @kinesiologui & @RobLamberts 1) @AndyBeetroot Marathon Running 2) @BasVanHooren Biomechnaics 3) @BillySperlich Wearables & Load All ℹ️👉https://tinyurl.com/SIGECSS

tinyurl.com

ECSS Webinars

ECSS Congress 2025

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Billy Sperlich @billysperlich.bsky.social · 27/10/2023

5/n Future research should adopt a more holistic approach to avoid oversimplification of the dose-response relationship between TID and performance. Contextual factors like technique, environment, and biomechanics need to be considered.

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Billy Sperlich @billysperlich.bsky.social · 27/10/2023

4/n Our study does not pinpoint an optimal TID for individual sports. Factors like exercise mode, strength training, environmental conditions, and biomechanical loading are not accounted for, making cross-sport or seasonal comparisons unreliable.

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Billy Sperlich @billysperlich.bsky.social · 27/10/2023

3/n Time spent in various intensity zones (Z1, Z2, Z3) by elite athletes differs significantly between sports & within seasons. No one-size-fits-all TID exists. Yet, a commonality is the large amount of time spent in Z1 across all endurance sports.

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Billy Sperlich @billysperlich.bsky.social · 27/10/2023

2/ n Retrospective TID studies often use varying methods of quantification. Notably, 49% of TIDs are based on single-case observations, primarily in cross-country skiing/biathlon, limiting generalizability across endurance sports.

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Billy Sperlich @billysperlich.bsky.social · 27/10/2023

1/n In the current study, time spent in intensity zones Z1 (<96%), Z2 (0%–70%) and Z3 (0%–41%) varied widely between sports and seasonal phases, with only 15% of the study participants being women and just 5% of the total subjects represented by female-only TID analyses.

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Billy Sperlich @billysperlich.bsky.social · 23/10/2023

🏋️‍♀️ Female Fitness 🏃‍♀️ Beim 7. Zoomposium des Fitnesswissenschaftsrats geht es diesmal um die Interaktion von Menstruationszyklus, Kraft - & Ausdauertraining. Tune in: 26.10. um 17:00 Uhr Alle Infos 👇 @JanaStrahler @Fitnessprofess6 @Uni_WUE @DOSB...

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Billy Sperlich @billysperlich.bsky.social · 18/10/2023

➡️ Acknowledging these SWOT factors seems important for AI' integration into sports science. #AI #SportsResearch #AthleticPerformance 🤖🏋️‍♂️📊

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Billy Sperlich @billysperlich.bsky.social · 18/10/2023

4️⃣Beware of threats like over-reliance on technology and data privacy risks.

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Billy Sperlich @billysperlich.bsky.social · 18/10/2023

3️⃣ Opportunities lie in real-time athlete monitoring and novel performance indicators.

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Billy Sperlich @billysperlich.bsky.social · 18/10/2023

2️⃣ Challenges include data diversity, adaptability, and resource costs.

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Billy Sperlich @billysperlich.bsky.social · 18/10/2023

1️⃣ #AI offers strengths like automating tasks, handling large data, and identifying complex patterns.

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Billy Sperlich @billysperlich.bsky.social · 18/10/2023

#artificalintelligence has strength, weaknesses, opportunities and threats in sports research, coaching, and athletic performance optimization. Here are the main outcome of our SWOT analysis in @FrontSportsAL 🙏@PeterDuking @RobertLeppich @HCHolmberg1...

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Billy Sperlich @billysperlich.bsky.social · 13/07/2023

My take-home message: Whenever possible, test outcome variables in duplicate or, even better, integrate testing as a routine part of the training process. 📝 Feel free to also comment your afterthoughts!

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