Jem Arnold is a physiotherapist, coach and PhD student. Currently, his main research focus is investigating FLIA: blood flow limitation of the iliac artery, a condition that affects certain athletes even at the very elite level, sometimes with surgery as the end outcome. Jem is also very involved and knowledgeable in using NIRS (near-infrared spectroscopy) to measure muscle oxygen saturation (SmO2). We dive deep into how using NIRS and SmO2 can inform workout execution as well as training interventions and athlete profiling.
IN THIS EPISODE YOU'LL LEARN ABOUT:
-What is NIRS and what is muscle oxygen saturation?
-The balance of oxygen delivery (to the capillaries surrounding muscle tissue - supply) and extraction (by the muscles from the capillaries - demand)
-NIRS testing protocols, and how it relates (and does not relate) to oxygen uptake (VO2) and lactate measurments
-Using NIRS to profile athletes
-Using NIRS in high-intensity workouts to optimise interval execution
-Blood flow limitation of the iliac artery (FLIA) - what is it, and what is its prevalence among athletes
-Risk factors for FLIA
-Current detection and diagnosis methods of FLIA, as well as treatment options
-How Jem's research aims to find methods by which FLIA detection can be improved
SHOWNOTES:
https://scientifictriathlon.com/tts358/
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Balancing training load and recovery with coach Lachlan Kerin | EP#274
Q&A #126 - Swimming and the specificity of upper body training adaptations (or how the turkeys can catch up with the fish)
Training for sprint and Olympic distance triathlons with coach James Teagle | EP#273
Q&A #125 - Adding bike, run and strength training in place of swimming; When to train to current ability level and when to train to target ability level; Adventure racing
Strength training intensity, specificity, workout structure, and home-based options with Dave Cripps | EP#272
Q&A #124 - Stride length, cadence and running speed; Cross-country skiing as part of winter training
Training Talk with Kolie Moore | EP#271
Q&A #123 - Science and application of FatMax and MFO (Maximal rate of Fat Oxidation)
Blood Flow Restricted Training with Richard Ferguson, PhD | EP#270
Q&A #122 - Metrics to track (and not to track) for beginners, intermediate and advanced athletes; The Power Duration Curve and WKO
Carbohydrate intake in racing - a case for going very high with Aitor Viribay Morales (Astana Pro Team) | EP#269
Q&A #121 - Training on 4-6 hours per week - is it a waste of time?
Training talk with Wolfram Bott | EP#268
Q&A #120 - Muscle fibre typology (fast twitch vs. slow twitch dominance) and training individualisation
Nutrition at the cycling World Tour level with Robert Gorgos (Bora-Hansgrohe nutritionist) | EP#267
Q&A #119 - Running distance and energy expenditure; Heart rate and energy expenditure; Running economy
Developing the future stars of triathlon with coach Joachim Willén | EP#266
Q&A #118 - Training and preparation for extreme triathlons like the Norseman, Swissman and other XTri World Tour races
Nutrition for endurance and ultra-endurance athletes with Trent Stellingwerff, PhD | EP#265
Q&A #117 - Interval training (HIIT and SIT) part 2: theory and application with expert guest Michael Rosenblat
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