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Sigma Nutrition Radio: Evidence-Based Nutrition | Fitness | Health | Dietetics | Body Composition

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Sigma Nutrition Radio provides unbiased, evidence-based information on nutrition and related areas through interviews with academic researchers, world-class coaches and athletes.

Sigma Nutrition Radio provides unbiased, evidence-based information on nutrition and related areas through interviews with academic researchers, world-class coaches and athletes.
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Sigma Nutrition Radio provides unbiased, evidence-based information on nutrition and related areas through interviews with academic researchers, world-class coaches and athletes.




SNR #240: Erica Goldstein, RD – Exercise-Associated Anemia, Hepcidin Activity & Implications for Athletes

Erica is a registered dietitian, currently completing a PhD at the University of Central Florida in Orlando. Previously she was employed as a Clinical and Sports Dietitian at the Mayo Clinic in Jacksonville, Florida, where Erica provided individual sports nutrition consultation to endurance and team sport athletes, in addition to providing care and educating oncology patients in the hospital. She has a M.A. in Exercise Science and Health Promotion from FAU, in addition to a B.S. in...


SNR #239: Carl Juneau, PhD – Does Muscle Damage Actually Cause Hypertrophy?

Carl is an exercise scientist with a PhD in physical activity epidemiology. He is also the founder of the Dr. Muscle app. In This Episode We Discuss


SNR #238: Andi & Alex Pürzel – Behind Intelligent Strength

Andi and Alex are the guys behind Intelligent Strength, a company that produces education on strength training and body composition through seminars and books. The brothers also have a gym in Vienna, Austria; Das Gym. Das Gym is a truly unique place. And when you talk to Alex & Andi you immediately understand why. The gym opened in 2016 and it’s hard to imagine there being another place like it on the planet. Andi has a long career as a coach and educator. As an athlete he first competed...


SNR #237: Martin MacDonald – The Influences, Experiences & Journey of an Industry Leader

More Martin is a clinical performance nutritionist and the founder of Mac-Nutrition, a thriving nutrition consultancy boasting sought after long-term internship and weekend mentorship programs. He has also developed Mac-Nutrition Uni, the UK’s first ever evidence-based, nutrition course that can be completed online. Martin has worked as a performance nutritionist in elite sport with British Weight Lifting, Derby County Football Club, English swimming and other elite...


SNR #236: Kevin Ashworth, MSc - Understanding Anxiety & How To Deal With It

Kevin received his Bachelor’s in Psychology from Washington State University, before completing his Masters Degree in Counseling Psychology at Pacific University. His focus remained on anxiety and models for working with children, which led to completing anxiety focused training during his tenure at Pacific University. During this time, he authored three publications on anxiety and completed his dissertation on the effectiveness of Collaborative Problem Solving. Kevin has earned...


SNR #235: Ciaran O’ Regan – Combat Sports Weight Regain After Weigh-in (Research Breakdown)

Ciaran has a BSc. in Sport & Exercise Science from the University of Limerick. He currently is a strength & conditioning coach in Cork, Ireland and works online with combat sport athletes on their nutrition and fight prep here at Sigma Nutrition. He has experience as a fighter himself, competing at a national-level for many years in amateur boxing, as well as competing in kickboxing, K1 and BJJ. Paper Reviewed: Silveira-Coswig et al., 2018 – Weight Regain, But Not Weight Loss, Is...


SNR #234: Lachlan Mitchell, RD – Natural Bodybuilding Research & Muscle Dysmorphia

As a qualified dietitian Lachlan has worked both in the public and private health systems at Hervey Bay Hospital, Hunter New England Diabetes Service and a private weight loss clinic in Newcastle. It was in these settings Lachlan provided high quality, evidence based nutrition advice to a variety of patient groups, including intensive care, cardiology, diabetes, paediatrics and weight loss. Lachlan has held numerous positions in the academic world. He spent time at Australian Catholic...


SNR #233: Bryce Lewis - Athlete Development, Identity & Psychology

Bryce is the founder of The Strength Athlete and is a world-class elite-level powerlifter in the IPF. Bryce competes in the -105 kg class, winning USAPL Raw Nationals in both 2016 and 2017, as well as winning silver at the IPF World Championships in Minsk in 2017. Through his success as an elite lifter, Bryce’s dream is to pass on his knowledge and skills through The Strength Athlete (TSA) powerlifting coaching services online. Bryce passionately advocates for the application and love of...


SNR #232: Ted Ryce - Social Isolation, Flow & the Influencers of Health That The Fitness Industry Forgets

Ted is a personal trainer and podcaster. He has worked with Fortune 500 CEOs, busy professionals and celebrities, including Richard Branson and Robert Downey Jr. Many of his clients are middle-aged executives who want a trainer to help them stay in shape and keep their energy levels high and stress levels low. He also counsels his clients on the proper use of supplements and offers nutritional advice. He believes in using science and scientifically proven methods to achieve the best...


SNR #231: Hugh Gilmore - Applied Sport Psychology Strategies

Hugh is currently with the English Institute of Sport working as the Performance Psychologist to the British Weightlifting team. Hugh worked with these lifters in the lead-up to the most recent Olympic Games in Rio 2016. Hugh has a MSc. in Applied Sport and Exercise Psychology. And is accredited by The Irish Institute of sport, the British Association of Sport and Exercise Science (BASES), and the British Psychological Society. Hugh has also worked with high-level athletes across a...


SNR #230: Stephan van Vliet, PhD - Effect of Whole Foods on the Anabolic Response, Muscle Function & Metabolism

Stephan is a PostDoc researcher in the Center for Human Nutrition at Washington University School of Medicine. Stephan’s research is focused on muscle metabolism. Stephan completed his PhD research at the University of Illinois, examining the regulation of postprandial protein metabolism after food ingestion and exercise. In This Episode We Discuss Do nutrient-dense whole foods have a different anabolic response to isolated protein? Stephan’s study: 18g protein from whole eggs vs. 18g...


SNR #229: Sophie Killer, PhD - Fuelling Olympic Track & Field Athletes

Dr Sophie Killer is a senior member of the English Institute of Sport Performance Nutrition Team where she’s worked as the Lead Performance Nutritionist for British Athletics, supporting the Olympic and Paralympic Track & Field athletes since 2015. She completed her PhD in Exercise Metabolism & Performance Nutrition at Loughborough University. Sophie has gained a wealth of experience working as a nutrition consultant across a range of elite athletes from individual cyclists, runners and...


SNR #228: Jacob Schepis – Developing Coaching Skills & Blending Evidence with Pragmatism

Jacob Schepis is the owner & director of JPS Health & Fitness, where he has helped thousands of individuals improve their strength, body composition and well being through evidence based resistance training and nutrition. Taking a scientific based approach to training and diet has enabled Jacob to excel in a variety of sports, including playing VFL, bodybuilding, where he has won multiple state and international titles, along with competing in the International Powerlifting Federation,...


SNR #227: Listener Q&A Episode

Question Topics


SNR #226: Prof. Stuart Phillips – Muscle Protein Balance, Protein Dose When Dieting & Anabolic Resistance

Professor Phillips is a Tier 1 Canada Research Chair in Skeletal Muscle Health. In addition to being a full Professor in Kinesiology, also an Adjunct Professor in the School of Medicine at McMaster University. He is a fellow of the American College of Sports Medicine (ACSM) and the American College of Nutrition (ACN). His research is focused on the impact of nutrition and exercise on human skeletal muscle protein turnover. He is also keenly interested in diet- and exercise-induced changes...


SNR #225: Carl Juneau, PhD - Effective Reps & Strategies for Hypertrophy

Carl Juneau, PhD is an exercise scientist with a PhD in physical activity epidemiology. He is also the founder of the Dr. Muscle app. In This Episode We Discuss


SNR #224: Kurtis Frank - Understanding The Placebo Effect & Supplement Misconceptions

Kurtis Frank graduated from the University of Guelph with a bachelor's degree in Applied Human Nutrition. During his undergraduate studies in human nutrition, he co-founded the website to gather and present as much evidence-based information on dietary supplements as possible in as unbiased a manner as possible. To that end, Kurtis worked tirelessly for seven years to make Examine the premier resource on the Internet for learning about the science of supplementation. Today, it...


SNR #223: Prof. Christopher Gardner - DIETFITS Trial 2018: Low-Fat vs Low-Carb Weight Loss Diets and Effect of Genotype and Insulin Secretion

Prof. Gardner is the Director of Nutrition Studies at the Stanford Prevention Research Center and a professor of medicine at Stanford University. He received his PhD in Nutritional Sciences at the University of California, Berkeley in 1993. His postgraduate training included a postdoctoral fellowship in cardiovascular disease epidemiology at Stanford. Dr. Gardner is passionate about two central questions that keep him up at night and get him to jump out of bed most mornings. The first of...


SNR #222: Ari Snaevarsson - Anorexia Nervosa, Refeeding Syndrome & Potential Refeeding Strategies

Ari Snaevarsson currently works as a dietetic technician at a residential treatment center for patients with eating disorders. He graduated from Gettysburg College with his Bachelor’s in Health Sciences and worked there also as a research assistant. His Capstone research was titled “How aggressively can hospitalized adolescents with anorexia nervosa be refed to prevent irreversible adverse outcomes or death?” In addition, Ari works, separate from the eating disorder field, as a Precision...


SNR #221: Jordan Feigenbaum, MD - Why Doctors Should Be Recommending Resistance Training

Jordan Feigenbaum is an experienced strength coach who also has his medical degree and residency training. In addition to a veritable laundry list of credentials, Jordan is also an elite powerlifter. In This Episode We Discuss