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Science Of Ultra

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Oct 27, 2015 • 59min

Coach Jason Koop

My guest today is Jason Koop Director of coaching for Carmichael Training Systems His list of athletes includes some of the biggest names in ultra running but also people like you and me. And, as an accomplished ultra runner himself, he knows first hand all that goes into performing in our sport.   Jason Koop is back…and he answers some very direct questions, like: In our last episode with Jason, episode 3, he explained his overall approach to training as transitioning from the least race-specific workouts to the most race-specific. A listener might question then, what is the reason for training short interval high intensity far out from a race at all? How does THAT benefit the overall plan and training? There are proponents of always training below LT, basically training at race pace or lower year 'round. What are Jason's thoughts on that and what are the physiological mistakes in that approach?  In the fall, many people are thinking about planning the following year. What should we consider as we question which races we sign up for, especially considering necessary recover time between races? How does he monitor athletes for signs of over-fatigue on a short time frame and over the course of a season? What is the physiological basis for doing recovery runs (rather than just taking the day off), and how should recovery runs be implemented in the course of a weekly plan? How does Jason monitor for progress and improvements during a training plan and how does he know it’s time to move on to the next phase of training? How long is the final phase (‘aerobic’) of training, optimally? In that final phase, where we are most race specific, what would we expect to be a weekly volume (distance or time) relative to the goal race and how should that volume be distributed throughout a week? Physiologically, why not divide the desired weekly volume evenly over 6 days, with one day off…what is the distinct benefit of more and less on different days in this final phase? The big race is now a few weeks away. How do we balance loss of preparedness from tapering with race readiness - what is an effective tapering strategy for shorter ultras like 50k to longer events, like 100 miler?   Plus, Jason answers two  high impact questions…are you ready? What are the 2 most common mistakes that you see in athletes prior training when they first hire you? What are the 3-4 key action items that we can put into practice right away to improve our training?
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Oct 20, 2015 • 59min

Hydration Physiology: Application

My guests today are veterans of Science of Ultra; they joined me in Episode 4.LISTEN TO THAT EPISODE (#4) FIRST IF YOU HAVEN’T ALREADY. Today we continue our series with them on all things sweating, hydration, electrolytes, and fluid balance.    Up first is Team Leader of the Thermal and Mountain Medicine Division at the US. Army Research Institute of Environmental Medicine (aka USARIEM). In addition to his doctorate in exercise physiology, he is also a registered dietician. My first guest is Dr. Sam Cheuvront. My second guest is Principal Investigator in the Thermal and Mountain Medicine Division at USARIEM. He served as the president of the New England Chapter of the American College of Sports Medicine. And, he is an ultra marathon runner himself. So, he knows first hand what it takes to achieve in our sport. My second guest is Dr. Robert Kenefick. Collectively, my guests have published over 200 peer-reviewed papers, book chapters, and reviews. They are two of the world’s leading scientists in hydration and fluid homeostasis, especially during exercise.    They work for the U.S. Army. So, we must provide the disclaimer that "The views and/or opinions of Dr.'s Kenefick and Cheuvront are theirs personally and do not reflect the views or opinions of the U.S. Army or DoD."   In the first part of this series, episode 4, we focused on the physiology of fluid and electrolyte balance. That episode is packed with fundamental physiology and what we talk about in this episode builds on what we covered in episode 4. So, you’ll benefit most from this episode if you’ve listened to that episode.   In this episode, we’re focusing on: FLUID BALANCE AND THERMOREGULATION WHILE PLANNING FOR PERFORMANCE   Quick background: We sweat to put water on the surface of our skin, which evaporates to the environment. The transition from liquid to gas requires a large amount of energy; sweating cools us because that energy comes in the form of heat, which is drawn from our skin. Sweat that drips off of us, does not provide that cooling benefit. Either way, that fluid loss eventually impacts all three body fluid compartments, which are 1) blood plasma, 2) intracellular (inside cells), and 3) interstitial (outside cells but not including blood).   Listen and learn the answers to these questions: We start with a scenario: I go for a long run and during the run my urine is dark; after the run I try to replace fluids by drinking plenty the rest of the day and by bedtime, my urine is a much lighter color. But, when I wake up in the morning, it’s dark again…what’s going on? What is the time-frame for fluid/electrolyte shifts among body compartments? As we sweat, the fluid and electrolytes initially come from the interstitial compartment, specifically around the glands near the surface of our skin. As we run and sweat…what do we know about fluid shifts and electrolyte shifts across the three body compartments during prolonged exercise. Another example, I run and take water = regular urination and clear; drink electrolyte solution = less urination and darker…we talked about the physiology of this in episode 4 but now, putting a real world example to the physiology, what’s happening to me in those cases?   Then we move into specific preparation for performance   Dr. Kenefick is an ultra runner and a leading expert on this topic, plus he has access to all resources for measurement and testing. He must never have any problem with fluid and hydration...right? Once in a while, we hear advocates of ‘bonk’ runs where one would purposefully dehydrate or go out without water. Clearly, this can be very very dangerous and we recommend against doing bonk runs. Out of curiosity, thought, is there any evidence that we can train in a way that will help us to perform better in a dehydrated or low volume state? Keeping ALL ELSE EQUAL, what are the practical, relative effects of each of the following on sweating: long clothing vs short vs nothing (same material - just different coverage), tightness of clothing, type of material, color of material? What are the definitions of adaptation, acclimation, acclimatization? What does it mean to be acclimatized to a hot environment with respect to body fluids, hydration, and sweating? What are best practices for preparing to race in warmer environments? Exercise, sauna,…? What is the recommended protocol for acclimation to heat in preparation for an event? What is the time-course of gain and loss of heat acclimation? When we plan for thermal stress from the environment, we must consider not only temperature but other factors such as wind, sun exposure, and humidity. Let’s say that we have gone through the acclimation protocol. Is there a cut off temperature/thermal stress range, below which, there is no benefit to performance. How can we gauge whether going through the protocol will be of benefit? Specifically thinking about what’s going on during running: at what body temperature do we begin to sweat and where on the body do we sweat first, most, etc.? Should we be concerned about gear placement (e.g., hydration pack vs waste belt) with regard to efficient sweating and cooling? E.g., would we expect any appreciable difference in fluid loss or cooling over time for someone wearing a hydration pack vs waist belt vs none or handheld bottles. To what extent does carrying extra weight affect sweat loss due to the extra work of carrying it; e.g., as much as 5 lbs for some full hydration packs vs 1 lb or so for a full handheld.    LINK TO FLUID REPLACEMENT IN EXERCISE POSITION STAND OF THE AMERICAN COLLEGE OF SPORTS MEDICINE (ACSM)   LINK TO ALL ACSM POSITION STANDS   Many people have the idea that, while running, ‘if they are continuing to urinate and it isn’t very dark, then they are probably OK’. We’ve established that watching urine color - DURING exercise - is not a reliable method for monitoring hydration status. So, “How can I monitor myself for appropriate fluid replacement and maintenance during an ultra marathon (or during a long training)?”    Our wrap up, big money question today...WHAT’S THE ANSWER?
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12 snips
Oct 13, 2015 • 55min

Tapering With Scott Trappe, PhD

Scott Trappe, PhD, Director of the Human Performance Lab at Ball State University, discusses training adaptations, detraining, and the tapering period in ultra running. Topics include genetics and endurance capacity, the benefits of tapering, aging athlete adaptations, the importance of rest and recovery, understanding complex concepts, and the benefits and drawbacks of stand-up desks for training and recovery.
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4 snips
Oct 6, 2015 • 50min

Variety & Avoid Injury With Ian Sharman

My guest today Ian Sharman   He is part of a small group in the ultra community - he is both a successful coach with his own coaching company and he’s an elite ultra marathon runner. In 2013 he set the record holder for the fastest Grand Slam of Ultra Running. Since Jan 2014 he has won 6 ultra marathons. AND, he has also earned a top-10 finish all 6 times he has run the Western States 100. So far, in 2015, he has won both Rocky Racoon (which he also won in 2011) and the Leadville 100 (which he also won in 2013).    I dig into Ian’s approaches and philosophies in coaching to learn: About his current athlete load and how he trains. His overall framework of training prescription - the macro-view (philosophy) to training for ultra marathons.   He also answers questions like: How and when, in a season, do you focus on long runs? How and when, in a season, do you prescribe high intensity workouts - what is the benefit relative to ultra performance? When, if ever, is cross training appropriate? What’s the benefit? There are many terms for training features, like ‘speed work’, tempo, striders, fartleks, 2 per day, back-to-back, etc. Do these play a roll in your training prescriptions - how/why/why not? What might a week of training look like 10 months from a key event (e.g., Leadville 100) vs 1 month out? Do you use a HR monitor with your athletes? What is your approach to monitoring or ensuring that training is balanced with the right amount of recovery; monitoring for over-fatigue or over-training? Recovery runs vs days off? Tapering; how do you approach tapering with your athletes?   We wrap up with two specific questions for the Ultra Clan What are the two most common mistakes that Ian sees in prior training plans when an athlete first comes to hire him as a coach? What three specific action items of advice would he give to us that we can make sure we have in place to optimize our training or racing today?   AND MUCH MORE…
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Sep 29, 2015 • 1h 12min

Hydration Physiology: The Basics

My guests today are Dr. Sam Cheuvront and Dr. Robert Kenefick Two of the world’s leading scientists in hydration and fluid homeostasis Going in alphabetical order,  My first guest is Research Physiologist and Team Leader of the Thermal and Mountain Medicine Division at the US. Army Research Institute of Environmental Medicine (also known as USARIEM). His research includes the study of environmental and nutritional factors influencing human work performance. He is a leader in the fields of human fluid needs, dehydration assessment, heat stress mitigation, and exercise thermoregulation. He’s published over 100 -peer-reviewed papers and book chapters. Our first guest is Sam Cheuvront, PhD, RD My second guest is Principal Investigator in the Thermal and Mountain Medicine Division at USARIEM. He has published over 90 peer-reviewed manuscripts, book chapters AND reviews on fluid homeostasis and the physiological responses to environmental stress. He served as the president of the New England Chapter of the American College of Sports Medicine and received their Honor Award in 2012. He is also part of the Ultra Clan as an ultra marathon runner himself. Our second guest is Robert Kenefick, PhD. My guests work for the U.S. Army. So, we must provide the disclaimer that "The views and/or opinions of Dr.'s Kenefick and Cheuvront are theirs personally and do not reflect the views or opinions of the U.S. Army or DoD." Part 1: BASIC PHYSIOLOGY - FLUID & ELECTROLYTE BALANCE This episode is the first in a two part series on fluids, hydration, and electrolyte physiology pertaining to ultra marathon running. We’re starting with the basics and progressing to specific application. In this episode, you'll learn the answers to: What are the major body fluid and compartments and definitions the major relevant terms (de/eu/hyperhydration, hyper/hypovolemia)? What are the mechanisms/routes and quantities of water loss? How much water does a person need each day? Drinking to thirst - is it sufficient, like you hear commonly? (spoiler: NO!) How much salt is lost in sweat - only sodium? To what extent does this change throughout the time-course of an ultra marathon? What’s in sweat and what are ranges of rates and composition in running? During exercise, the majority of water gained is in the form of what we drink. But we have heard about getting water also from the breakdown of stored glycogen. Is this accurate? How can we expand our plasma volume? When do we need (and not need) an electrolyte-containing drink either during or after exercise? What is needed in an electrolyte drink beyond sodium? Hyponatremia; should it be a concern for most ultra marathon runners?  When does a runner need to consciously add sodium, beyond just following cravings? AND MUCH MORE...  
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Sep 24, 2015 • 49min

Intervals and more intervals with Jason Koop

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Sep 24, 2015 • 36min

Research At The Western States Endurance Runs With Marty Hoffman, M.D.

My guest today is Marty Hoffman, M.D.   All about the history and current topics of research at Western States Endurance Runs (WSER). Hyponatremia at WSER Learn the answer to, "Is sodium supplementation necessary to avoid dehydration during prolonged exercise in the heat?”. What do we know today about the long term health of ultra-endurance runners? Is ultra marathon running bad for us AND WHY IT MAY NOT EVEN MATTER? Learn the most important take-home action items from research at WSER that you can put into practice TODAY! Find out how you can get involved in research at WSER. http://www.wser.org/research/ AND SO MUCH MORE...   http://scienceofultra.com
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Sep 23, 2015 • 7min

Introduction And Genesis Of Science Of Ultra

This is the introduction episode, where I tell you about myself and the origin of Science of Ultra, a podcast for ultra marathon runners.

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