The TriDoc Podcast, triathlon and health in one place · Dr. Jeff Sankoff

Ep. 164: Bikes, Tech, and Thyroid: The Triathlon Trifecta You Didn't Know You Needed

·1 hr 3 min·5 clips

The thyroid gland acts like your body's accelerator, controlling everything from heart rate to metabolism—here's what happens when it malfunctions.

This episode of the TriDoc Podcast is hosted by emergency physician and triathlon coach Jeff Sankoff. He is joined by his colleague, triathlon coach Juliet Hockman, for the Medical Mailbag segment, and later by James Elvery, CEO of RaceRanger. The first main topic is a listener's question about managing Hashimoto's disease, a form of hypothyroidism, while training for triathlon. Jeff and Juliet explain the thyroid gland's role as a metabolic regulator and the symptoms of hypo- and hyperthyroidism. They cite that hypothyroidism has a prevalence of 4.6% in the population, while hyperthyroidism is at 1.3%. The hosts reference studies showing both conditions can impair endurance performance by affecting VO2 max and cardiac function. They mention accomplished athletes like Gail Devers and Sarah Piampiano who have managed thyroid conditions. Their advice for the listener includes working with an endocrinologist to potentially adjust medication seasonally and possibly consulting a nutritionist. A surprising insight is that hyperthyroidism, often perceived as boosting metabolism, actually leads to cardiovascular dysfunction that hampers exercise capacity. The hosts caution that using thyroid medication for weight loss is ineffective and dangerous. They emphasize that assembling a broader healthcare team, including a sports psychologist, can be valuable for athletes. The conversation reveals that even with a common, manageable condition, an athlete's medication needs may fluctuate with training cycles. Later, Jeff interviews James Elvery about the RaceRanger, a device that monitors drafting distances on the bike. Elvery explains the technology is now used in 37 professional races annually. The system provides visual feedback to riders and aims to eventually supply real-time drafting data to race referees via a tablet app. A technical lesson learned involved a 5G network clash at a London event, which now prompts pre-race spectrum checks. The company is scaling up operations and hiring a senior engineer. The tone is primarily educational and conversational, blending medical explanation with sports technology updates. The hosts adopt a supportive, coaching-style approach during the medical discussion. The interview with Elvery is informative and focuses on practical implementation and growth. Endurance athletes managing a chronic health condition like thyroid disease would find the medical segment highly relevant. Listeners interested in the technological and regulatory future of triathlon racing would enjoy the RaceRanger update. Those seeking purely training advice or race recaps might find less direct value in this particular episode.

As heard by us

A practical look at race tech that can improve safety and sharpen post-race data.

Jeff Sankoff and James Elvery center the episode on a question triathletes actually care about: what bike-mounted race tech can do beyond drafting.

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Why you'd press play

You want the race tech debate without the hand-waving.

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