That Triathlon Show

Natasha van der Merwe is a triathlon coach and professional triathlete with a background in professional tennis and coaching tennis. Originally from South Africa, Natasha is now based in Texas, where she has built a successful coaching program that caters to athletes of all levels, from beginners to professionals.  IN THIS EPISODE YOU'LL LEARN ABOUT: -Natasha's coaching methodology -How her background in tennis and coaching tennis has helped her in triathlon coaching -Advice for age-groupers on how to improve their swim, bike, and run, respectively -How to fit in training and maximise positive training adaptations for time-crunched athletes -The balance of training load and recovery -The art and science of coaching SHOWNOTES: https://scientifictriathlon.com/tts334/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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: Natasha's website, and personal and business Instagram Nick Bare's Ironman Prep Season 2 on Youtube (featuring Natasha) and a video featuring Natasha racing Ironman Florida 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.

Andy King, PhD, is an exercise physiologist at the Australian Catholic University. Andy joins us to discuss the science and application of hydrogel products like Maurten and SiS Beta Fuel. Do they work, how do they work, and is it worth paying the premium compared to regular sports nutrition products?  IN THIS EPISODE YOU'LL LEARN ABOUT: -What are hydrogels, and how are they different from regular gels?  -The theory behind how hydrogels could work to improve endurance performance -What does the science say? Do hydrogels improve endurance performance, metabolic markers, or gastrointestinal symptoms compared to regular gels? -Practical recommendations: is it worth it to use hydrogels?  -Glucose and fructose - is there an ideal ratio for sports nutrition products?  -How to maximise carbohydrate intake (e.g. taking in 120 g/h of CHO)  SHOWNOTES: https://scientifictriathlon.com/tts333/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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 Twitter and ResearchGate Carbohydrate Hydrogel Products Do Not Improve Performance or Gastrointestinal Distress During Moderate-Intensity Endurance Exercise - King et al. 2020 Glucose and Fructose Hydrogel Enhances Running Performance, Exogenous Carbohydrate Oxidation, and Gastrointestinal Tolerance - Rowe et al. 2021 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.

Jodie Swallow Cunnama is a triathlon coach and retired professional triathlete. As an athlete, Jodie went to the Olympics in Athens 2004, and she has three World Championship titles to her name (one 70.3 world title, two ITU Long Distance titles). As a coach, Jodie now coaches a mix of amateur and professional athletes, including for example Jodie Stimpson.  IN THIS EPISODE YOU'LL LEARN ABOUT: -Jodie's coaching philosophy -Influences from previous coaches and from her own career as a professional triathlete -Differences between coaching age-groupers and professionals -Specific tips for improving your swim, bike and run training, respectively -How to prepare for and execute in races -Why there is a lack of female coaches in endurance sports, and what can be done about it SHOWNOTES: https://scientifictriathlon.com/tts332/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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. LINKS AND RESOURCES: Jodie's website and Instagram   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.

Mark Burnley, PhD, is an exercise physiologist at the University of Wolverhampton. In this episode, we discuss the VLaMax, polarised training (and it not being optimal for endurance athletes), and using measures of complexity to assess fatigue. This is part two of a two-part interview with Mark. IN THIS EPISODE YOU'LL LEARN ABOUT: -VLaMax: the background, reason for recent surge to popularity, and the mechanistic and practical issues with measuring it -Polarised training is not optimal for endurance athletes: the arguments against polarised training being an "ideal" training intensity distribution, and why quantifying training intensity distributions may not be the smartest thing to do in the first place -How measures of complexity (e.g. Approximate entropy ApEn, alpha-exponent of Detrended Fluctuation analysis DFA) can be used to assess fatigue, and the potential applications thereof SHOWNOTES: https://scientifictriathlon.com/tts331/   SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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: Mark's Twitter, ResearchGate, and Youtube channel Critical Power and VO2 kinetics with Mark Burnley, PhD | EP#257 Lactate threshold with Mark Burnley, PhD | EP#330 DFA alpha-1: A non-invasive, cheap option for estimating the aerobic threshold with Bruce Rogers, MD | EP#329 Things you didn't know you didn't know: physiological complexity - video on All Out Physiology Polarized Training is Not Optimal for Endurance Athletes - Burnley et al. 2022 Polarized Training is Optimal for Endurance Athletes - Foster et al. 2022 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.

Mark Burnley, PhD, is an exercise physiologist at the University of Wolverhampton. In this episode, we discuss the lactate threshold (specifically, the first lactate threshold), how to measure it, what it means, and more. This is part one of a two-part interview with Mark. IN THIS EPISODE YOU'LL LEARN ABOUT: -Terminology and definitions of exercise intensity domains and thresholds -Methods for assessing the threshold separating the moderate and heavy intensity domains, including lactate testing and gas exchange tests -Pros and cons of different testing methods -How-to guide to lactate testing, including protocols, sampling tips, and how to interpret the data -How does knowing your (first lactate) threshold help inform your training? -What is the value in doing lactate spot checks in training?  SHOWNOTES: https://scientifictriathlon.com/tts330/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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: Mark's Twitter, ResearchGate, and Youtube channel Critical Power and VO2 kinetics with Mark Burnley, PhD | EP#257 VLaMax, Polarised training, Fatigue and Complexity with Mark Burnley, PhD | EP#331 Lactate Threshold Concepts How Valid are They? - Faude et al. 2009 Lactate in contemporary biology: a phoenix risen - Brooks et. al. 2021 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.

Bruce Rogers, MD, is one of the researchers behind the research on using the non-linear HRV-based marker DFA alpha-1 (which can be be measured non-invasively and for free or very cheaply) to assess the aerobic threshold. We discuss this research and its applications in this interview.    IN THIS EPISODE YOU'LL LEARN ABOUT: -What is DFA alpha-1, and how can you measure it?  -The current evidence behind using DFA alpha-1 as a marker for the aerobic threshold (LT1/VT1) -Testing protocols, and hardware and software requirements for testing -Limitations and challenges, including devices, artifacts, and training modality -How to incorporate DFA alpha-1 testing in your training -Other potential applications of DFA alpha-1, including assessing fatigue and durability SHOWNOTES: https://scientifictriathlon.com/tts329/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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. LINKS AND RESOURCES: Bruce profiles on Twitter and Research Gate A New Detection Method Defining the Aerobic Threshold for Endurance Exercise and Training Prescription Based on Fractal Correlation Properties of Heart Rate Variability - Rogers et al. 2021 An Index of Non-Linear HRV as a Proxy of the Aerobic Threshold Based on Blood Lactate Concentration in Elite Triathletes - Rogers et al. 2022 Detection of the Anaerobic Threshold in Endurance Sports: Validation of a New Method Using Correlation Properties of Heart Rate Variability - Rogers et al. 2021 Influence of Artefact Correction and Recording Device Type on the Practical Application of a Non-Linear Heart Rate Variability Biomarker for Aerobic Threshold Determination - Rogers et al. 2021 Fractal correlation properties of heart rate variability as a biomarker of endurance exercise fatigue in ultramarathon runners - Rogers et al. 2021 Correlation Properties of Heart Rate Variability during a Marathon Race in Recreational Runners: Potential Biomarker of Complex Regulation during Endurance Exercise - Rogers et al. 2021 Heart Rate Variability – New perspectives and insights with Marco Altini, PhD | EP#325 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.

Luca Filipas, PhD, is a researcher at the University of Milan and an endurance sports coach of professional and amateur runners, cyclists, and triathletes. In this interview, we discuss his recent study comparing polarised, pyramidal, and combined POL-PYR or PYR-POL training intensity distributions, and the applications of this research in planning a periodised endurance training plan.  IN THIS EPISODE YOU'LL LEARN ABOUT: -How combining pyramidal and polarised training blocks (in that specific order) may be a more effective periodisation scheme to optimise endurance performance -How the goal event (e.g. 5k vs. marathon running) might influence and change these findings -The alignment of a pyramidal-polarised periodisation with classic tapering and peaking research -Periodisation across a season: the importance of downtime and careful race planning -Luca's coaching methodology and top tips for endurance athletes SHOWNOTES: https://scientifictriathlon.com/tts328/ 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: Luca's website, Instagram, Twitter and Research Gate Effects of 16 weeks of pyramidal and polarized training intensity distributions in well-trained endurance runners - Filipas et al. 2021 The training intensity distribution among well-trained and elite endurance athletes - Stöggl and Sperlich 2015 The integration of training and off-training activities substantially alters training volume and load analysis in elite rowers - Treff et al. 2021 Tapering, periodisation and recovery with Iñigo Mujika, PhD | EP#256 Scientific Training for Endurance Athletes with Dr. Philip Skiba | EP#311 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.

Olli-Pekka Nuuttila is a doctoral researcher at the University of Jyväskylä. In this interview we discuss his recent study comparing two-week blocks of either increased volume (70% increase over baseline) or increased intensity (5 interval sessions per week), and how the findings can be applied in the real world.   IN THIS EPISODE YOU'LL LEARN ABOUT: -How does a two-week block of volume or intensity impact performance (3000m running time trial), subjective markers of recovery, and hormonal/biomarkers of recovery and stress? -The impact of adding a recovery week after a two-week focused block on volume or intensity -Individual variations in response and non-responders or trivial responses -When and how to incorporate volume blocks or intensity blocks in your training SHOWNOTES: https://scientifictriathlon.com/tts327/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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: Olli-Pekka's Twitter and ResearchGate Physiological, Perceptual, and Performance Responses to the 2-wk Block of High- versus Low-Intensity Endurance Training - Nuuttila et al. 2022 Acute Physiological Responses to Four Running Sessions Performed at Different Intensity Zones - Nuuttila et al. 2020 A Scientific Approach to Improve Physiological Capacity of an Elite Cyclist - Ronnestad et al. 2017 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.

Scott Johnston is an endurance sports coach, author, and co-founder of the coaching business Uphill Athlete. The main focus of Scott and his company is coaching mountain sport athletes, like mountain runners, climbers, and ski mountaineers, but Scott also has an extensive background in more traditional endurance sports like swimming, cross-country skiing, and even triathlon.   IN THIS EPISODE YOU'LL LEARN ABOUT: -What do we mean by "aerobic base", and how do you develop a really strong aerobic base?  -How should aerobic training be executed?  -How and when should you balance high-intensity training into your training program?  -Training zones: Scott's recommendations for how to assess and use training zones -Testing: the Heart Rate Drift test for assessing your aerobic threshold SHOWNOTES: https://scientifictriathlon.com/tts326/ SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  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. LINKS AND RESOURCES: Uphill Athlete (Scott's coaching business) website, Youtube, and Instagram Training for the New Alpinism and Training for the Uphill Athlete - Scott's books Related articles on Uphill Athlete: Heart Rate Drift test instructions, How to set your training zones, and Training zones heart rate calculator Polarised training with Stephen Seiler, PhD | EP#177 Training structure, periodisation and the science of winning with Jan Olbrecht, PhD | EP#198 The Science of Winning: Planning, Periodizing and Optimizing Swim Training (Kindle Edition) by Jan Olbrecht Special Strength Training: Manual For Coaches & Block Training System in Endurance Running by prof. Yuri Verkoshansky 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.

Marco Altini, has a PhD in Data Science and an MSc in Human Movement Sciences and High-Performance Coaching. He is the founder of HRV4Training and a passionate runner. In this interview, we discuss the latest in research and application when it comes to heart rate variability (HRV). IN THIS EPISODE YOU'LL LEARN ABOUT: -A brief summary of what HRV is and the benefits of monitoring it -What are the most important factors that influence HRV and resting heart rate (RHR), and what are their relative importance or magnitude? Based on Marco's large-scale, free-living study published in late 2021.  -Chest strap or phone camera measurement of HRV: what are the differences?  -Should you measure in the morning, or use a tool that allows you to measure HRV all night (and day)?  -How to use and interpret HRV and RHR - why and when to rely on one or the other -The current state of evidence when it comes to "HRV-guided training"  SHOWNOTES: https://scientifictriathlon.com/tts325/ 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: Marco's website, Medium blog, Instagram, Twitter and Research Gate HRV4Training website and Instagram Heart Rate Variability (HRV) – Applications and Insights in 2018 and Beyond with Marco Altini | EP#144 What Is behind Changes in Resting Heart Rate and Heart Rate Variability? A Large-Scale Analysis of Longitudinal Measurements Acquired in Free-Living - Altini and Plews 2021 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.