Sigma Nutrition Radio:  Health | Performance | Wel

Sigma Nutrition Radio: Health | Performance | Wel


SIGMA Nutrition Radio: a place where people interested in self-educating themselves in order to take control of their own health, body and performance can get access to honest, science-backed information and opinions from leading experts. Every week the show features deep-diving interviews with amazing guests with expertise in different areas related to nutrition, health, performance, mindset and living life to its fullest potential.


SNR #148: Roundtable with the Sigma Team! - Hosted by HPA  

Episode 148: This was a round-table discussion with the Sigma Nutrition & Performance team, hosted and produced by Human Performance Advancement.

SNR 147: Jeff Rothschild, RD - Carbohydrate Periodization for Endurance Athletes and How the Menstrual Cycle Impacts Training  

Episode 147: Sports dietitian Jeff Rothschild discusses how he implements the latest glycogen/carbohydrate availability research into pracitce with his endurance athletes, issues surround supplements on race day and how the menstrual cycle can affect programming and training performance.

Jeff Rothschild is a Registered Dietitian (RD) with a Master’s degree in Nutritional Science. He works with a variety of clients including elite ATP and NCAA tennis players, endurance athletes, boxers, swimmers, and a number of touring musicians at TriFit in Santa Monica, CA. Jeff is also a writer for the monthly research digest, and teaches college sports nutrition at CSU Los Angeles.

Jeff follows a methodical and steadfast approach to nutrition, prioritizing the questions of ‘who are you and what are your goals’ during the decision-making and counseling process to achieve quality results. This includes an evidence-based approach to nutrition, practicing concepts developed over time instead of using untested or unproven ideas. This allows everyone from elite athletes to sedentary individuals to get the most out of sessions, optimize nutrition plans to fit their own needs, and create the greatest and longest-lasting positive changes.

Jeff’s main areas of interest are sports nutrition, meal timing, intermittent fasting, and circadian rhythms. He has co-authored multiple scientific research papers that have been published in peer-reviewed nutrition and1797350_10151994670761359_1463077510_n food science journals, served as a reviewer in the peer-review process for journals, and has presented his research at national nutrition conferences. He is also an NSCA Certified Strength and Conditioning Specialist (CSCS), and has spent five years as the assistant tennis coach at CSU Los Angeles. Jeff helped the Golden Eagles earn national Top-25 rankings each of those years, and was a two-time winner of Assistant Coach of the Year for the West Region by the Intercollegiate Tennis Association. Beyond nutrition and coaching, Jeff has competed as a cyclist and continues to play competitive tennis.

In this episode we discuss:

How to translate the latest "train low" and "recover low" strategies into practice with athletes Supplementation for endurance athletes How to schedule your supplements/nutrition on race day How the menstrual cycle affects training and nutrition considerations
SNR #146: Is Sugar Addiction a Real Thing? (A Scientific View)  

Episode 146: Answering a listener question: “I have a sugar addiction. Every time I quit, I get sucked right back in a few months later and gain 10 lbs. What can you say to help me, besides "stop eating sugar?”

SNR #145: Ian Dunican, PhD - Sleep, Training Timing & Performance in Elite Athletes  

Episode 145: Sleep & performance researcher Ian Dunican of the Australian Institute of Sport, discusses some of his work examining the effects of sleep, circadian disruption, training timing and travel schedules on the performance and recovery of elite level athletes. 

Ian Dunican is currently undertaking PhD research at University of Western Australia (UWA) and Australian Institute of Sport (AIS) investigating, among other things, the impact of evening use of electronic devices on sleep and next day athletic performance, the effects of jet lag and transmeridian travel on athletic performance, and the prevalence of sleeping disorders amongst professional Rugby players.

 In this episode we discuss:

What does the evidence base tell us about poor sleep and the impact for athletes? Athlete sleep patterns Work examining the effects of travel schedules on sleep and performance Fatigue Avoidance Scheduling Tool Training timing & schedules effect on performance and sleep Amateur athletes  sleep and circadian rhythm distruption due to shift work Is pre-training caffeine contraindicated for PM sessions? The effect of using electronic devices by elite athletes before sleep Future directions for research in this area
SNR #144: Is Inflammation a Problem & Should I Use an Anti-Inflammatory Diet?  

Episode 144: Answering a listener question: “In a few episodes you've mentioned inflammation and how to deal with it. But how do you know if you have a problem with inflammation to begin with?"

SNR #143: Keith Baar, PhD - Tendon Stiffness, Collagen Production & Gelatin for Performance & Injury  

Episode 143: Muscle physiology researcher Dr. Keith Baar from the University of California at Davis is on the show to discuss his teams work looking at nutrional and training strategies that can increase tendon stiffness, hence playing a role in injury prevention and the recovery process from tendon/ligament ruptures and bone/cartilage damage.

Dr. Keith Baar is the head of the Functional Molecular Biology Laboratory (FMBL) in the Department of Neurobiology, Physiology, and behavior. His research is focused on understanding how training and feeding result in
improved muscle, tendon and ligament function. In his capacity as a researcher, he has made fundamental discoveries on how muscle grows bigger, stronger, and more fatigue resistant.

Over the last 15 years, Keith has applied these discoveries working as a scientific advisor to a number of athletic teams/organizations including: Chelsea Football Club, USA Track and Field, Paris Saint-Germain Football Club, British Cycling, The English Institute of Sport, Leicester Tigers Rugby, and the Oklahoma City Thunder. In this capacity he works to maximize the effects of training for both endurance and strength and minimize

His most recent work focuses on connective tissues like tendons and ligaments. The podcast will discuss the most recent work designed to determine how to best train and what types of foods compliment training to decrease tendon and ligament injury and accelerate return to play.

SNR #142: Gar Benn - Nutrition Troubleshooting, Diet Evaluations & Effective Programming  

Episode 142: Sigma Nutrition coach Gar Benn discusses how to effectively troubleshoot your dietary approach, evaluating how to improve a diet and effively programming nutrition and training to get optimal results.

Gar is a strength coach and nutritionist. He is the owner of City Gym, a strength training facility and powerlifting club based in Limerick, Ireland. Gar is also a coach for Sigma Nutrition, where he has been doing some amazing work with our online coaching clients.

SNR #141: Performance Nutrition for Fighters - Common Mistakes  

Episode 141: Helping competitive athletes make weight in an effective and scientific manner is my principle area of practice with my own coaching clients. Currently, my personal roster of clients is about 90% made up of such athletes, so pro MMA fighters, boxers and then also powerlifters and weightlifters.
And for today’s episode I wanted to get into some of considerations for performance nutrition and weight cutting with fighters specifically. Both in terms of nutrition to support training and to allow them to make weight and refuel appropriately. So what I’m going to get into is really in relation to competitive fighters, training 5-6 days per week, generally with double sessions on most of those, and who have 24 hours or more between the weigh-in and their fight. So please bear in mind that context for anything I may say.
There’s lots of routes we could go down, but for today I just wanted to highlight 6 mistakes that I find to be very common in how many fighters, and even their coaches, apply and think about their nutrition.

SNR #140: Layne Norton, PhD – Psychology of Overcoming Adversity and Body Composition Considerations for Powerlifting  

Episode 140: Layne Norton, PhD is on the show to discuss his current journey back from injury, the psychology of elite athletes and the debate how much of a role body composition plays directly on strength and powerlifting performance.

Academically he completed his PhD in nutritional sciences under Professor Donald Layman at the University of Illnois, who you regular listeners will remember being on the podcast back in episode 123. As a competitor Layne was a pro bodybuilder who has more recently achieved large success in powerlifting, winning USAPL nationals in 2015 before going onto win a Silver medal at 2015 Worlds in the 93kg class, breaking a squat world record at the time. Layne puts out content and provides coaching via his site BioLayne.

SNR #139: Implementing Refeeds, Diet Breaks & Free Days  

Episode 139: Answering a listener question: “How do you use 'days-off' or 'Diet-Breaks' with clients?”

SNR #138: Dana Lis, RD - Exercise-induced GI Distress and the Impact of Gluten & FODMAPs on Athletic Performance  

Episode 138: Sports dietitian and PhD candidate Dana Lis discusses some new research examining the potential for acute low-FODMAP diets to help alleviate GI symptoms in athletes

Dana is a well-known sport dietitian with broad experience at the Professional, Olympic, National and International levels. Her passion for high performance sport nutrition has provided her the honor of working with several world-class athletes, achieving top performance; including helping Canada's athletes win Olympic medals at London 2012 and Sochi 2014.

As a registered dietitian and graduate of the renowned IOC diploma in sport nutrition, she is currently completing PhD research investigating the effects of gluten-free and acute low FODMAPs diets on gastrointestinal health and inflammation in endurance athletes.

SNR #137: Luis Villasenor - How to (Successfully) Implement a Ketogenic Diet for Body Composition & Strength  

Episode 137: Ketogains founder Luis Villasenor explains how to set-up a ketogenic diet correctly, discusses common mistakes and smashes misconceptions about all sorts of concepts related to ketogenic diets.

Luis is the found of Ketogains, an online community that works to help people achieve their body composition and performance goals through a well-formulated ketogenic diet. They have a respected reputation due to their evidence-based thinking and non-dogmatic approach to nutrition.

Luis has been personally using a ketogenic diet for ~ 15 years, whilst building substantial muscle mass, getting lean and training for powerlifting.

SNR #136: Do You Need To Rotate Your Protein Sources?  

Episode 136: Answering a listener question: “If someone was to only use set sources of protein i.e. chicken and whey. Would they still see the same benefits as to someone who has a more varied approach? In terms of hypertrophy and when on a fat loss phase. With their protein intake calculated as it should be for both. Also would they see negative effects in terms of food intolerance?”

SNR #135: Nicola Rinaldi, PhD - Hypothalamic Amenorrhea  

Episode 135: Nicola Rinaldi, PhD discusses the causes, treatment interventions and science of hypothalamic amenorrhea. Hypothalamic amenorrhea is a condition in which menstruation stops for several months (or more) due to a problem involving the hypothalamus. The hypothalamus is in the center of the brain and controls reproduction.

SNR #134: Are BCAAs Worthless?  

Episode 134: Answering the question of whether branched-chain amino acid supplementation is a worthy consideration for gym trainees and athletes.

SNR #133: Emma McCrudden - Vegan & Vegetarian Athlete Nutritional Programming  

Episode 133: Performance dietitian Emma McCrudden of the University of British Columbia discusses important considerations for implementing evidence-based nutrition programs with vegan or vegetarian athletes.

Emma trained as a Dietitian in the University of Ulster in Northern Ireland. She completed her Masters at Loughborough University in Sports Nutrition and Exercise Physiology. She worked as an applied Performance Dietitian for the English Institute of Sport (EIS) with a variety of sports including, beach volleyball, England Netball and Bob Skeleton.

In 2010 she split her time between England, continuing her work with the EIS and Dublin, working as the lead dietitian for Leinster Rugby. In 2013, she joined the Canadian Sport Institute Pacific in Vancouver and has worked with swimmers, Women’s Soccer team, the Vancouver Whitecaps Youth teams, BMX, the Canucks and winter sports in Whistler.

Her work focuses on the specialist application of the science of nutrition to performance enhancement in sport aiming to maximise training adaptation and performance, optimize body composition while minimizing risk of injury, over-training, illness and burnout. She is currently based at the University of British Columbia, where she splits her time between lecturing and being a practitioner with the elite athletes on campus.

SNR #132: Tony Gentilcore - How to Be an Effective, Successful Coach  

Episode 132: Tony Gentilcore discusses his philosophy on coaching, what skills are vital to effective coaching, strategies to develop as a coach, mistakes that coaches can often make and how to help clients get the best results possible. 

Tony Gentilcore is one of the co-founders of Cressey Sports Performance and helped develop that brand and facility for many years. Now Tony is coaching out of Boston, MA where he is a much sought-after coach, as well as contributing to many of the most well-known fitness publications on the web.

In this episode we discuss:

Tony's coaching philosophy The skills that are vital to effective coaching Tweaks, progressions and regressions to tailor programs to client needs and circumstances Strategies that coaches can use to develop into the best coach they can be Mistakes that coaches can often make and how to learn from them Reasons why intermediate lifters fail to progress Helping clients get the best results possible in a manner that is right for that individual
SNR #131: Dan Pardi, PhD - The Human Operating System & Developing a Philosophy for Health  

Episode 131: Dan Pardi, PhD discusses all sorts of concepts related to the philosophy of health, including; using tech and tools to improve behaviuors, mindset over tools, research on PERMA and applying the "explore, expolit" concept to health.

Dan is an entrepreneur and researcher whose life’s work is centered on how to facilitate health behaviors in others. He is the developer of Loop Model to Sustain Health Behaviors to help people live a healthy lifestyle in a modern world.

He does research with the Psychiatry and Behavioral Sciences Department at Stanford University, and the Departments of Neurology and Endocrinology at Leiden University in the Netherlands. His current research looks at how sleep influences decision making

SNR #130: Menno Henselmans - Menno’s Contest Prep, Ab-Libitum Dieting & Making Fat Loss Manageable  

Warwick (UK) in that area.

Menno's background in science and statistics helped him to develop Bayesian Bodybuilding. The Bayesian method goes beyond the scientific system. It is not just a method of collecting knowledge. Bayesian methods tell us how to form rational beliefs based on the available information. Menno's work is thus data driven and evidence based.

Menno is a published academic author and has spoken at some of the world's biggest evidence-based training conferences and events.

In this episode we discuss:

Menno's recent contest prep: why, how and lessons learned How to structure ab-libitum dieting for fat loss phases The flawed, incorrect idea that "IIFYM is the only way"
SNR #129: Chris Masterjohn, PhD - Glycation, Oxidative Stress & The Protective Effects of Glucose and Insulin  

Episode 129: Chris Masterjohn, PhD discusses the role of carbohydrates and insulin in endogenous antioxidant systems, oxidative stress and misconceptions on glycation.

Chris is currently Assistant Professor of Health and Nutrition Sciences at Brooklyn College, part of the City University of New York. He has a PhD in Nutritional Sciences from the University of Connecticut.

His dissertation was about the role of glutathione, an antioxidant and detoxifying molecule that we make within our own bodies from dietary protein, in preventing the accumulation of methylglyoxal, a potentially toxic compound formed in small amounts during energy metabolism that is believed to play a role in diabetes and other degenerative diseases.

He writes detailed nutritional science articles on his blog The Daily Lipid and hosts a podcast by the same name.

 In this episode we discuss:

Why it's important people don't fall into the trap of demonizing sugar in the same way they argue other have done to dietary fat in the past. The realtionship between oxidative stress, glycation and diet. The role of glucose and insulin in our bodies' antioxidant systems Why restricting carbohydrates out of fear they increase glycation is erroneous
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