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/
SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE:
www.scientifictriathlon.com/podcast/
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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
Applied triathlon science with Olav Aleksander Bu (Norwegian Triathlon Olympic team) | EP#264
Q&A #116 - Swim training on two swims per week; How to know if you should focus on swim endurance or intensity; Effective use of swim toys
Swim training talk with Ian Armiger | EP#263
Q&A #115 - Interval training (HIIT and SIT) part 1: theory and application with expert guest Michael Rosenblat
Training, testing and physiology with coach/scientist Iñigo San Millán, PhD | EP#262
Q&A #114 - Using kilojoules to monitor training load; Big rides for Ironman; Should your training be as hard as your race
Indoor bike training with World Tour level coach Kevin Poulton | EP#261
Q&A #113 - Theory and application of threshold training
Cycling Time Trialling with Marco Pinotti (Head of Performance of CCC Team ) | EP#260
Q&A #112 - Theory and application of moderate-intensity training; How to make training decisions informed by test results
Training talk with Sebastian Zeller | EP#259
Q&A #111 - Build, then recover vs. consistent training load; Creatine for endurance athletes (that lift weights)
Altitude training with prof. Grégoire Millet | EP#258
Q&A #110 - Long runs and rides during winter base training; Training Stress Score (TSS) in swimming
Critical Power and VO2 kinetics with Mark Burnley, PhD | EP#257
Q&A #109 - Running race pace and training zone calculators; Estimating your run threshold pace; How to use session-RPE
Tapering, periodisation and recovery with Iñigo Mujika, PhD | EP#256
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