Jem Arnold
@jem_arnold
PhD candidate 🇨🇦 physiotherapist. Sport vascular conditions, performance testing, mNIRS. Treat declarative statements as questions?
Just published from my (eventual) PhD thesis 🔖 Review of conservative treatment (CTx) for Flow Limitations in the Iliac Arteries (FLIA, endofibrosis) and proposal of Return to Sport (RTS) guidelines after surgery Here is what we learned🧵/14
Congratulations and thanks for the collaboration to @andereibar and the team @APinedo_Jauregi @JordanSudafrica, #Andri. Happy to see this one published in EJSS! You can check our latest paper here: onlinelibrary.wiley.com/doi/10.1002/ej…
This one finds that although it is possible to detect a general zone in which maximal fat oxidation occurs using muscle oxygen saturation plotted as a function of time through near-infrared spectroscopy (NIRS), this method does not appear to be accurate enough to specify the…
There's a pile of research out there about the physiological cost of pro cyclists racing the Tour de France. But what would it look like if amateurs tried to ride the same route in 21 days? A new study answers the question: escapecollective.com/how-hard-is-it…
Our systematic review and meta-analysis, published today in @BMJOpenSEM is the first to explore injury and illness patterns across all competitive cycling disciplines. 🔍 Key findings 👇🏼 🧵
Afternoon coding sprint to deploy a super basic in-house function to error check our metabolic cart and power recording. Compare VO2 gain (ΔVO2/Δwatt slope) to normative data 80% prediction intervals
Phew, what a race the women's Giro was! Here's what stood out most. escapecollective.com/six-takeaways-…
Remarkable insight from Michael Woods on safety in cycling. I often criticize the lack of good, transparent epidemiological data on cycling risk (describe the problem if you want to fix it). This is a manifestation of the tension that is created when that is lacking
News from our lab: 4 weeks of high altitude decreases human skeletal muscle mitochondrial cristae density, while mitochondrial respiration increases: doi.org/10.1152/japplp… Carsten Lundby, @DrRajacobs, @JoachimNielsen6, @nortenblad, Stine Lundby @sduiob @teamdanmark
Probably bring in a sociologist (is that the right discipline?) to compare to others exercise trends. For example check google search terms:
🩸Blood lactate [BLa] does NOT increase exponentially during high intensity exercise 🧑🔬 Why do we make this common mistake? I think because we have focused too much on the lactate test And forgotten what information that test is trying to give us about real exercise 🧵1/14
If we're having a conversation and I misunderstand you, it's my responsibility to try to understand better If you misunderstand me, it's my responsibility to try to make myself better understood Say it with me: "It's always my responsibility to communicate better"
Good conversation. Not incompatible, just different perspectives on the same questions Population health policy/promotion 🤷♂️ Elite performance optimisation Mechanistic Ex Phys 🤷♂️ Applied sport sci Controlled causal inference 🤷♂️ Real-world ecological validity
Hey Steve!! I’m really not here to argue, but I do want to (respectfully!) clarify a few things about our paper so it’s not misrepresented. Appreciate the chance to add a bit of nuance to the discussion!
Hey Steve!! I’m really not here to argue, but I do want to (respectfully!) clarify a few things about our paper so it’s not misrepresented. Appreciate the chance to add a bit of nuance to the discussion!
You've probably seen headlines: High-Intensity Training is superior to easy aerobic running. But dig deeper and you'll notice a pattern: most of these studies are short: just 4 to 8 weeks. A recent review tells a fuller story. In the early weeks, HIT and Sprint Interval…
The UCI wants to limit gear ratios to make racing safer. So we need to: – Assume unrealistic limits on cadence – Affect <0.3% of race time – Reduce speed by ~1–3 km/h – And force redesign of every WorldTour groupset All that, for no proven safety gain. escapecollective.com/chainrings-don…
The science isn't flawed. It's the over interpretation of the science that is flawed. P.S. A better description of the science is "limited". And it is by many things: no funding for sport performance research, coaches not allowing athletes to take part in studies etc.
Good to see the UCI are only 7 years behind the literature scholar.google.com/scholar?hl=en&…