

Pacing science and training talk with Andy Renfree, PhD | EP#349
Andy Renfree, PhD, is a sports and exercise scientist with a background in and passion for running. In this interview, we discuss one of Andy's main areas of expertise, the science of pacing. We also have a more general discussion about training, sports science, and the integration of the two.
IN THIS EPISODE YOU'LL LEARN ABOUT:
-The science of pacing
-Practical recommendations for improved pacing
-The messy reality of training and the implications for athletes and coaches
-The role of sports science in training and coaching
SHOWNOTES:
https://scientifictriathlon.com/tts349/
SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE:
www.scientifictriathlon.com/podcast/
SPONSORS:
ROKA - Exceptional quality triathlon wetsuits, trisuits, swimskins, goggles, performance sunglasses as well as prescription eyeglasses and sunglasses. Online vision test for prescription updates and home try-on options available for eyeglasses. Ships from the US, UK and EU. Trusted by world-leading athletes such as Lucy Charles-Barclay, Javier Gómez Noya, Flora Duffy, Morgan Pearson, Summer Rappaport and others in triathlon, cycling, speed skating, and many more. Visit roka.com/tts for 20% off your order.
ZEN8 - The ZEN8 Indoor Swim Trainer is a one of a kind swim bench for time-crunched triathletes looking to improve their swim technique, power and propulsion, and consistency of swim training. It is very affordable, about the price of a pair of running shoes, and Zen8 offer free shipping in the US and the UK. Best of all, you can try it risk-free. If you don't love it after two weeks, send it back and get a full refund. Get 20% off your order at zen8swimtrainer.com/tts.
LINKS AND RESOURCES:
- Andy's blog, Twitter and Research Gate
- A selection of studies on pacing from Andy and his colleagues
- Influence of an Enforced Fast-Start on 10-km Running Performance - Carmo et al. 2015
- The Influence of Collective Behavior on Pacing in Endurance Competitions - Renfree et al. 2015
- Effects of different goal orientations and virtual opponents performance level on pacing strategy and performance in cycling time trials - Carmo et al. 2021
- Affective Feelings and Perceived Exertion During a 10-km Time Trial and Head-to-Head Running Race - Carmo et al. 2020
- Risk Perception Influences Athletic Pacing Strategy - Micklewright et al. 2014
- The influence of performance level, age and gender on pacing strategy during a 100-km ultramarathon - Renfree et al. 2015
- Antifragile: Things That Gain from Disorder by Nassim Nicholas Taleb
- Athletics: How to become a champion by Percy Cerutty
RATE AND REVIEW:
If you enjoy the show, please help me out by subscribing, rating and reviewing: www.scientifictriathlon.com/rate/
CONTACT:
Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Instagram, Facebook, or Twitter.
NEW BASE TRAINING PLANS - 60% LAUNCH DISCOUNT
We have just launched a set of brand new base training plans. There is a low-volume (7 hours per week average), mid-volume (10 h/wk) and high-volume (14 h/wk) version available.
For a limited time only, until the 31st of August 2025, these plans are available on a massive discount of 60%, meaning you can purchase a plan for 30$ instead of the regular price of 75$. Use the code "BASE1" at checkout to apply this discount code.
The plans are only available on TrainingPeaks. You can learn more about each of the plans (and purchase them, if you so desire) through the links below.