
Fitter Radio Triathlon Podcast
Hosted by Coaches Bevan McKinnon and Tim Brazier, Fitter Radio brings together their shared passion and knowledge of triathlon, running, nutrition and basically all things endurance! Listen to the latest research, interviews with pro athletes and leading experts to help you improve your sports performance and your health!
Latest episodes

Jun 16, 2025 • 1h 10min
#622 - Creatine with Dr Jeff Rothschild - Tri news and race reviews.
We catch up on the racing and news from the weekend. We meet Chris Sturdevant, winner of the free race entry to IRONMAN 70.3 Sunshine Coast Dr Jeff Rothschild is back on the show and this week he talks about creatine. Jeff discusses the multifaceted benefits of creatine, including its impact on brain health, cardiovascular health and overall well-being. He emphasizes the importance of daily supplementation, dosage recommendations and dispels common myths surrounding creatine use. (0:00:00) – Tim calls in from Andorra. (0:07:03) – Racing at the weekend (0:12:04) - Chris Sturdevant (0:20:35) - Tri news and racing at the weekend (0:32:43) – IRONMAN Cairns race review (0:50:55) – Jeff Rothschild on Creatine LINKS: Dr Jeff Rothschild at https://www.eatsleep.fit/about-me/ Knowledge is Watt at https://www.knowledgeiswatt.com/

Jun 9, 2025 • 1h 37min
#621 - Kyle Smith
We catch up on the racing and news from the weekend. We bring Kiwi Professional Triathlete Kyle Smith back to the show after his recent 4th place at the T100 in San Francisco. Kyle reflects on his personal growth over the last few years plus the challenges he’s faced around health, particularly related to mould exposure and how these issues impacted his performance. We also discuss the evolution and changes in middle distance racing and the importance of maintaining the balance between training and adequate recovery during the pressures of a much longer racing season. The importance of perspective, the awareness of the risks of overtraining and the need for athletes to find their own path in a competitive environment are now key to athletic success. (0:00:00) - Tim’s in France so Jack Moody is hosting this week. (0:04:30) - Infinit Nutrition prize pack (0:06:38) - Plasmaide (0:12:28) - Jack’s code JACKM10 (0:13:08) - We review the racing from the weekend (0:29:07) - Kyle Smith (1:24:33) – Heat adaptation LINKS: Follow Jack Moody on Instagram at https://www.instagram.com/jacktmoody/ Follow Kyle Smith on Instagram at https://www.instagram.com/kylesmithnzl/ Plasmaide at https://plasmaide.com.au/ Infinit Nutrition at https://www.infinitnutrition.com.au/ T100 Triathlon at https://t100triathlon.com/

Jun 2, 2025 • 1h 22min
#620 - Dr Jeff Rothschild
We catch up on all the racing and news from the weekend. We bring Dr Jeff Rothschild of the Sports Performance Research Institute New Zealand (SPRINZ) back to the show to talk about the science behind fuelling for endurance sports. The discussion focuses on the daily energy requirements for athletes and the evolving perspectives on carbohydrate diets in endurance performance. We cover carbohydrate intake strategies, the science surrounding carbohydrate loading and the importance of electrolyte balance leading into events. Additionally, insights into current research perspectives in sports nutrition and the necessity of proper fueling for training are explored, emphasizing the need for athletes to understand their individual nutritional needs to maximize training outcomes. (0:03:18) – Tri news and race reviews (0:36:17) – Dr Jeff Rothschild LINKS: More about Jeff Rothschild at https://www.aut.ac.nz/student-profiles/jeff-rothschild

May 26, 2025 • 1h 15min
#619 - Dr Michael Rosenblat
We catch up on all the racing and news from the weekend. Dr Michael Rosenblat completed a Doctor of Philosophy (PhD) in Exercise Science at The University of Toronto, a Master of Science (MSc) in Physiotherapy at McMaster University and a Bachelor of Applied Science in Kinesiology at The University of Guelph. He is also a Clinical Exercise Physiologist with a Specialization in High Performance. In our chat with Dr. Michael Rosenblat we discuss his recent work on training intensity distribution and its impact on endurance performance. He reflects on his journey in sports science, the importance of statistical analysis and the need for collaboration in research. The conversation delves into the findings of a network meta-analysis that compares different training intensity models and their effects on VO2 max and time trial performance, highlighting the significance of individual participant data in drawing meaningful conclusions. We discuss the relationship between coaching and sports science and explore the differences in training intensity requirements for recreational versus competitive athletes, the importance of periodization in training models and the nuances of VO2 peak and time trial performance. Additionally, the conversation delves into the significance of understanding thresholds in training and the need for further research in sports science to better inform coaching practices. (0:04:34) – Tri news and race reviews (0:09:39) – IM703 Sunshine Coast free race entry competition. (0:28:27) – Dr Michael Rosenblat LINKS: Our previous interview with Dr Rosenblat at https://www.fitter.co.nz/fitter-radio/2021/8/30/episode-383-dr-michael-rosenblat Which Training Intensity Distribution Intervention Will Produce the Greatest Improvements in Maximal Oxygen Uptake and Time-Trial Performance in Endurance Athletes? Study at https://pubmed.ncbi.nlm.nih.gov/39888556/ Effect of High-Intensity Interval Training Versus Sprint Interval Training on Time-Trial Performance: A Systematic Review and Meta-analysis. Study at https://pubmed.ncbi.nlm.nih.gov/32034701/ More about Dr Rosenblat at https://www.evidencebasedcoaching.ca/ IM703 Sunshine Coast at https://www.ironman.com/races/im703-sunshine-coast

May 19, 2025 • 1h 12min
#618 - A Weekend of Racing. Alex Yee.
We catch up on all the racing and news from the weekend. We share an excerpt from the World Triathlon Podcast intervew with Alex Yee post his attempt to test himself over the marathon distance at the London Marathon. (0:01:50) – Bev joins Training Peaks Virtual (0:05:26) – We review all the racing from the weekend. (0:43:03) – Alex Yee – is there an IRONMAN in his future (0:46:12) – Excerpt from the World Triathlon Podcast (1:09.00) – Hayden Wilde update LINKS: World Triathlon Podcast with Alex Yee at https://triathlon.org/news/world-triathlon-podcast-with-alex-yee-marathon-man

May 12, 2025 • 1h 4min
#617 - Steve Allende, Co-Founder and CEO of Plasmaide.
Steve Allende, Co-Founder and CEO of Plasmaide, shares his insights on the company’s significant role in the triathlon community. He discusses their collaboration with elite athletes like Kristian Blummenfelt and Gustav Iden, offering unique training opportunities in Font Romeu, France. Steve emphasizes the importance of evidence-based supplements and highlights the exciting competition for age group athletes to train with the pros. Tune in for a glimpse into the future developments of Plasmaide's innovative products that promise to enhance athletic performance.

May 5, 2025 • 1h 19min
#616 - Prof Alison Heather on Plasmaide.
Dr. Alison Heather, a former academic professor and Chief Scientific Officer for Plasmaide, shares insights into the innovative supplement Plasmaide. She explains its origins, benefits for athletes, and how it enhances nitric oxide production compared to beetroot juice. The conversation highlights the adaptogenic properties of Plasmaide, its role in carbohydrate metabolism, and practical advice for safe usage. Dr. Heather emphasizes consulting healthcare professionals before starting any new supplement regime, ensuring athletes make informed choices for peak performance.

Apr 27, 2025 • 56min
#615 - IRONMAN Texas Race Review. Performance Enhancing Supplements.
We discuss the tri news and review all the racing from the weekend including IRONMAN Texas, Challenge Taiwan and Challenge Gran Canaria. New Zealand blackcurrants have been show to have an impact on endurance performance. We chat to Dr Sam Shepherd to find out more. (0:02:11) – This week IRONMAN Australia Port Macquarie (0:02:50) – Hayden Wilde on a WTCS start list (0:09:41) – Ultro Audio earbuds competition (0:10:27) – Challenge races from the weekend (0:16:23) – IRONMAN Texas race review (0:39:13) – Intro to supplements for performance (0:45:48) – Dr Sam Shepherd LINKS: More about CurraNZ at https://curranz.com/ IRONMAN Texas at https://www.ironman.com/races/im-texas Ultro Audio Earbuds at https://www.ultroaudio.com

Apr 20, 2025 • 1h 8min
#614 - George Gilbert. Technostress. IM Texas
The LA 2028 Olympics has seen changes to the original venue plan, we discuss the potential impact on triathlon. We review the start list at IRONMAN Texas George Gilbert is the VP of Virtual Platforms at TrainingPeaks - he designed, built and brought to market TrainingPeaks Virtual, a new and innovative online cycling application that is defining the future of virtual sport. Tim chats to George Gilbert, about the unique features of the platform designed specifically for cyclists, emphasizing the importance of delivering an experience that includes tactical racing and performance verification. George explains how the platform ensures credibility in athletic performance and the onboarding process for athletes. They also touch on the seamless integration with Training Peaks, the customization options available for users and the importance of community feedback in shaping future developments. Training data – have we become too obsessed with the numbers. (0:01:43) – Change of venue at Olympic Games (0:08:28) – IRONMAN Texas (0:18:70) – Training Peaks Virtual intro (0:21:38) – George Gilbert, Training Peaks (0:49:24) – Technostress LINKS: Training Peaks Virtual at https://www.trainingpeaks.com/virtual/ IRONMAN Texas at https://www.ironman.com/races/im-texas

Apr 12, 2025 • 1h 4min
#613 - Confidence, Nutrition and the Mind
We share an interview from the World Triathlon podcast with Paris 2024 Olympic Triathlon Champion Cassandre Beaugrand! It is a deeply honest chat revealing a little more about just where all the grit, determination and competitive spirit that has taken the 27-year-old to the very top of the sport came from. Charlotte McLauchlan is a Master's student in nutrition and dietetics at Auckland University. In this chat with Bevan she discusses her research on fueling strategies for long-distance triathletes. Charlotte highlights the lack of research in this area, particularly for amateur athletes, and the barriers to accessing proper nutrition education. Charlotte shares her personal experiences with nutrition, body image and the psychological aspects of eating, emphasizing the importance of a multidisciplinary approach to care. She also outlines her upcoming study aimed at assessing the nutritional status of triathletes in New Zealand, inviting participants to contribute to this important research. (0:01:19) – Sweet Cheeks (0:05:41) – Cassandre Beaugrand intro (0:10:16) – Cassandre Beaugrand on the World Triathlon podcast (0:27:36) – Lionel Sanders, confidence and nutrition (0:32:12) – Nutrition study for New Zealand triathletes (0:36:00) – Charlotte McLauchlan LINKS: The World Triathlon Podcast at https://podcasts.apple.com/nz/podcast/the-world-triathlon-podcast/id1517199963 Charlotte McLauchlan can be contacted by email at cmcl126@aucklanduni.ac.nz Sweet Cheeks at https://www.sweetcheeksnz.co.nz/