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In this week’s Spotlight, we dive into the science behind an eye-watering nutrition number: 200 grams of carbohydrate per hour. That’s what elite Ironman Cameron Wurf reportedly consumed during a record-breaking bike leg in Texas. But does the body actually use it all—or is there a ceiling to sugar oxidation? Ross and Gareth break down a recent study comparing 120g and 90g per hour in trained cyclists, revealing how much of that fuel actually gets burned, and whether it has the purported effects on fuel use during exercise. Before we hit the carb overload, we’ve got a mix of big stories from across the sporting world:

🎾 IV drips and bans in tennis – Australian pro Max Purcell has been hit with an 18-month doping ban for intravenous vitamin infusions. We unpack the rules, his case and discover some other athletes who have fallen foul of the IV rule

🏏 Cannabis and cricket – South Africa’s Kagiso Rabada served a one month suspension for a ‘recreational drug’. We revisit the criteria WADA uses to ban substances and ask: should cannabis really be on the list?

🏃‍♂️ The teen sprint takeover – A 17-year-old ran a wind-assisted 9.92s, with two ninth-graders just behind him, breaking 10.2s. They join Gout Gout as teen phenoms with bright futures

🔬 Publish, perish—or post? – We reflect on a growing reality in science: if researchers aren't visible and able to communicate beyond journals, they risk irrelevance. Is it now “share or disappear”?

Show notes

• The long detailed piece by Ben Rothenberg on the Max Purcell doping ban
• Ryan Lochte got done for the same offence, no investigation needed - he served himself up on an Instagram post!
• A Newsweek article, published after Sha'Carri Richardson's cannabis ban, on how the drug came to be on the WADA list
• Interesting piece on Gout Gout's coach, Di Sheppard
• Article on Cam Wurf's Ironman fuelling strategy that kicked off today's main topic
• WADA's scientists defend cannabis' presence on the banned list
• Recent review showing no performance enhancing effects of cannabis
• The Podlogar article comparing 90 to 120 g/h that we discuss

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Show notes

In this week’s Spotlight, we open with a brisk roundup of major stories from the world of sport and policy. We look at new developments following the UK Supreme Court ruling on the Equality Act, including the first tangible policy response. We also revisit the resolution of the tragic ice hockey case involving manslaughter charges, and World Athletics’ announcement of its “Ultimate Championship” event—an innovative idea, but not without flaws. Gareth raises some pointed criticisms about the competition format and the puzzling exclusion of key athletics disciplines.

Next, we talk talent. The NFL Draft always offers a window into the world’s most elaborate selection process—but also its inefficiencies. We reflect on how early selection often produces more busts than brilliance, yet remains largely unchanged due to structural inertia. A 14-year-old’s blistering 35-ball century in the IPL leads us to discuss a surprising link between cricket scoring and endurance pacing, and how this informs the Duckworth-Lewis-Stern method.

From there, we shift to the core topic of the episode: scientific integrity. Gareth reflects on our recent Spotlight's deep dive into how scientific papers are made, and our most recent feature podcast on the Boston Marathon and Mike's experiences testing Puma's new shoe. The conversation expands into questions of independence in scientific research and evidence, with specific reference to Puma’s bold claim that their new shoe is “the fastest ever", and why that statement is, at best, premature. But we also give credit where it’s due, praising the transparency and almost certain publication of the results of the brand’s testing, as well as the researcher's realism about trust in their lab's research.

And amid it all, Ross shares some personal news—stepping away from his School Academy High Performance and development role, while reflecting on missed opportunities and unrealized HP philosophies.

Links

• The Scottish FA acts to protect women's football
• And the English FA are, apparently, considering it
• The case against ice hockey player Matt Petgrave is dropped
• An analysis of draft picks that shows how high the proportion of "busts" is
• Here's a preprint of the Hoogkamer evaluation of the Puma supershoe - this is not peer-reviewed yet, but I strongly suspect that a peer reviewed version of this is on the horizon
• The best community discussion you'll read on Supershoes, courtesy our Discourse members (Members only access - you know what to do!)

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In this round-up of the two big spring marathons—Boston and London—Mike and Ross rate the performances of the top athletes while debating whether pacesetters should be used in major marathon events. The team then delve into the ultra-competitive world of shoe tech, where Mike gets to do a running economy test in a pair being touted as the world's fastest running shoes.

SHOW NOTES:

• Results of the testing done by the University of Massachusetts Amherst on Puma's Fast-R 3
• Study on how shoe mass affects running economy
• The study we discussed that shows how a 1.1% improvement in metabolic cost of running translates into a 0.78% improvement in performance
• The original Vaporfly study that got the ball rolling on the 4% benefit, for comparison of methods

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