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Listen Here: For a full list of apps, go here. Or simply search “Sigma Nutrition” in your app of choice.Or listen directly on the Sigma website here. Introduction In the world of sports nutrition, understanding how different supplements and nutrients impact not just physical performance but also cognitive function is rapidly gaining traction. Athletes are constantly seeking that competitive edge, and while many are familiar with the benefits of carbohydrates and caffeine for energy and focus, there’s much more at play. Emerging research is highlighting the roles of compounds like creatine and omega-3s, not only for muscle recovery but also …

Andy Kasper, PhD, is a sports nutritionist, currently heading up Performance Nutrition at Newcastle United Football Club. Previously, Dr. Kasper held roles in elite football (Chelsea, Fulham, Derby), rugby union (England Rugby Union, Sale Sharks, London Irish, Wasps) and rugby league (Catalan Dragons).

Exercise improves metabolic control both via increasing muscle glucose uptake during muscle contractions by insulin-independent mechanisms and by increasing skeletal muscle insulin sensitivity after physical activity.

One of the researchers that has been at the forefront of research in this area for many years is Professor Glenn McConell.

The term ‘tactical populations’ has been applied to those working in law enforcement, fire, first responders, and military. In this episode we look at both the theoretical and pragmatic realities of improving diet and health in firefighters and some other tactical populations.

Listen on these AppsPodcast TranscriptsGuest InformationNicky Keay MB BChir, MRCP Dr Nicky Keay is a medical doctor (MB BChir, MRCP) with specific training in endocrinology. She has published related to female athlete hormone profiling, energy availability, and relative energy deficiency in sport (RED-S). As a Research Fellow at St Thomas’ Hospital, she was part of the international medical team which developed an anti-doping test for growth hormone. Dr. Keay studied medicine at Cambridge University, gained membership of the Royal College of Physicians, and trained in endocrinology. Dr. Keay is currently an Honoray Fellow at Durham Universty in the Department of …

Guest InformationEric Trexler, PhD Eric Trexler is Director of Education at Stronger By Science, where he co-hosts the SBS podcast. He also is one of the four contributors to the MASS Research Review. Eric has a prolific background in exercise science research, with more than 30 publications to his name by the time he completed his PhD at UNC-Chapel Hill.In this episode we discuss: Antioxidants, free radicals, reactive oxygen species (ROS) and reactive nitrogen species (RNS). When our antioxidant systems are overwhelmed by the production of reactive species it leads to a state of oxidative stress Bi-directional relationship between oxidative …

Guest BioKirsty Elliot-Sale, PhD Dr Elliott-Sale is an associate professor in female physiology at Nottingham Trent University. There, she is also the Head of the Musculoskeletal Physiology Research Group. She is also responsible for teaching on the undergraduate and postgraduate Sport Science degree programmes. Dr Elliott-Sale teaches mainly in the areas of Exercise Physiology and particularly in Female Physiology, Performance, and Health. In This Episode We Discuss Menstrual disorders: secondary amenorrhea (loss of 3 or more consectively) vs. oligomenorrhea (cycle longer than 45 days), vs.Functional Hypothalamic Amenorrhea (FHA) vs milder symptoms of some dysfunction What is happening on a hormonal …

About This EpisodeThe Sigma Live Sessions include four topic discussions on: 1) Dietary Interventions in Prediabetes & Diabetes – Nicola Guess, PhD 2) Fuelling Elite Sport Performance, Carbohydrate Periodization & Pracitioner Experiences – James Morton, PhD 3) Relative Energy Deficiency & Female Athlete Triad – Kirsty Elliot-Sale, PhD 4) Fasting for Health? Longevity, Autophagy and More – Martin MacDonald, MSc Full interviews: Kirsty Elliot-Sale, PhD – Energy Availability, Menstrual Disorders & RED-S James Morton, PhD – Fuelling Elite Sport: Team Sky, Liverpool FC & Carbohydrate Periodization Nicola Guess, PhD, RD – Prediabetes & Type 2 Diabetes Nutrition About This EpisodeThe …

Guest BioErica Goldstein, RD, MS 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 Nutrition and Dietetics from UNF. She is also a Certified Strength and Conditioning Specialist with the NSCA, and a Certified Sports Nutritionist …

Share this episode on Facebook Episode 215: Dr. Andy Galpin of CSU Fullerton talks about blending evidence and practice, as well as the potential beneficial and detrimental roles of technology for making training decisions. How to Listen Listen on Spotify Listen on iTunes (iOS) Listen on Stitcher Get podcast RSS feed Click Here to Get Podcast Transcripts Guest Bio Andy Galpin, PhD Andy is a tenured Professor in the Center for Sport Performance at CSU Fullerton. Andy spent 4 years studying the structure and function of human skeletal muscle at the single cell level, a feat which earned him a PhD in Human Bioenergetics …

Share this episode on Facebook Episode 211: Brianna Stubbs, PhD discusses some of the peer-reviewed research she has published on ketone metabolism and ketone ester supplementation. How to Listen Listen on Spotify Listen on iTunes (iOS) Listen on Stitcher Get podcast RSS feed Click Here to Get Podcast Transcripts Guest Bio Brianna Stubbs, PhD In 2016 Brianna completed her PhD in Metabolic Biochemistry at Oxford University. She also became a World Champion rower as part of the GB Rowing Lightweight Women’s four person crew, and won 3 other World Rowing Championships medals. She has published peer-reviewed studies looking at ketone metabolism, …

Share this episode on Facebook Episode 206: Nutritionist Alessandro Ferretti discusses data he has collected that may inform us as to the inflammatory response to diet and lifestyle, using markers such as blood glucose, heart rate variability and Alessandro’s metric of “HRV/BG Index”. Get the podcast on iTunes (iOS) Get the podcast on Stitcher (Android app) Get podcast RSS feed Click Here to Get Podcast Transcripts Guest Bio Alessandro Ferretti Alessandro graduated from the Institute of Optimum Nutrition in 2001 and formed Equilibria Health Ltd in 2004. With a growing team of Nutritionists and a Medical Doctor, Equilibria Health is now …

Click here to subscribe to MASS Episode 204: Greg Nuckols is on the show to review two recent research papers; one looking at concurrent training and the interference effect, and the other looking at the fat-free mass index in athletes. Guest Bio Greg Nuckols Greg Nuckols is the founder of StrongerByScience.com, a website that provides comprehensive information about how to get stronger and more jacked. Greg has over a decade of experience under the bar, and a BS in Exercise and Sports Science. He’s held 3 all-time world records in powerlifting in the 220 and 242 classes, and is pursuing graduate …

Episode 203: Arthur Lynch, PhD candidate at the University of Limerick, is on the show to break down two important research papers. Get the podcast on iTunes (iOS) Get the podcast on Stitcher (Android app) Get podcast RSS feed Click Here to Get Podcast Transcripts Guest Bio Arthur Lynch, PhD Candidate Arthur is an exercise physiology PhD researcher and international-level competitive lifter in the IPF. He is head powerlifting coach at Sigma Nutrition. His current research is based on HMB supplementation and anabolism. Research Papers Discussed In This Episode: Study #1: Brechue & Abe, 2002 – The role of FFM accumulation and …

Episode 195: Dr. Brendan Egan of Dublin City University discusses the current research on exogenous ketone supplementation for athletic performance and recovery. Guest Bio Brendan Egan, PhD Brendan holds a position as Senior Lecturer in Sport and Exercise Physiology in the School of Health and Human Performance at Dublin City University. His current research investigates the molecular regulation of skeletal muscle function and adaptation across the life course, with special interest in the synergy between nutrition and exercise interventions to optimise performance in athletes and elderly. He received his BSc Sport and Exercise Science from the University of Limerick in …

Episode 194: Leinster Rugby performance nutritionist Daniel Davey discusses how to apply evidence-based nutrition practices with team sport athletes in elite-level sport. Guest Bio Daniel Davey Daniel received his BSc in Science from University College Dublin and holds an MSc in Nutrition, Physical Activity & Public Health from the University of Bristol. Daniel is also a Certified Strength & Conditioning Specialist (C.S.C.S) with the NSCA, and has completed the national qualification in Exercise and Health Studies. Daniel has worked as a performance nutritionist with a host of elite athletes in a range of sports such as golf, athletics, rugby and …

Episode 192: Australian Institute of Sport recovery physiologist Dr. Shona Halson discusses her exciting work look at performance, fatigue and immunity in elite athletes. Guest Bio Shona Halson, PhD Dr Shona Halson is the Senior Recovery Physiologist at the ‪Australian Institute of Sport and an Associate Editor of the International Journal of Sports Physiology and Performance. Her work involves providing athletes with advice and assistance to minimise fatigue and maximise recovery, she is responsible for conducting applied research to evaluate techniques to reduce fatigue and increase recovery. Shona has worked closely with the Australian Dolphins and their specific preparation for …

Episode 190: Mike Israetel, PhD discusses the relative importance of carbohydrates for strength athletes, planning nutrition periodization for strength athletes and how to structure mesocycles for strength gain. Guest Bio Mike Israetel, PhD Mike Israetel is currently a professor of Exercise Science at Temple University in Philadelphia, as well consulting nutritional and training for elite strength and combat athletes around the world. Mike is the head science consultant for Renaissance Periodization, where he has authored and co-authored a number for books. He has a PhD in Sport Physiology from East Tennessee State University, and on the sporting side has experience …

Episode 185: Trent Stellingwerff of the Canadian Sports Institute discusses nutrition for endurance sports, carbohydrate periodization and raceday fuelling. Guest Bio Trent Stellingwerff, PhD Trent is an applied sport physiologist with a specialization in the area of performance nutrition. He earned a Bachelor of Science in Human Nutrition and Exercise Physiology at Cornell University and he earned his Ph.D. from the University of Guelph in Exercise and Skeletal Muscle Physiology. In his current role he focuses on providing his physiology and nutrition expertise to Canada’s national rowing, track and field and triathlon teams, as well as leading Canadian Sport Institute’s …

Brent Ruby PhD, discusses his lab’s fascinating work on the upper limits of energy expenditure, markers of over-training vs. real-world performance, and the role of environment & temperature on performance and recovery. Guest Bio Brent Ruby, PhD Brent is the director of the University of Montana Center for Work Physiology and Exercise Metabolism (WPEM). The center aims to mesh the research world with the operational field environment by combining study models that integrate the control of the laboratory with the hostilities of the field. WPEM’s high tech $1.5 million facility opened it’s doors in 2008 and is a 3,550 sqft. facility which includes …

Graeme Close PhD discusses nutrition strategies that he has researched and employed with professional jockeys in order to allow them to make weight more safely, perform better and improve their overall health. Guest Bio Prof. Graeme Close Originally a Professional rugby league player, Graeme is now a Reader in Applied Physiology & Sport Nutrition at Liverpool John Moores University where he combines his academic research with nutrition and physiology consultancy to some of the worlds leading sporting organisations. Graeme is currently the head performance nutritionist to England Rugby. He is the lead nutritionist to Team GB Ski and Snowboard and works with …

Martin MacDonald is the founder of Mac-Nutrition, a nutrition eduation company. In this episode we discuss: Links:

Guest Bio Nia Shanks is a coach, health and fitness writer, and leader of the Lift Like a Girl revolution. She is busting the myth that women can’t develop strong bodies in a healthy way and she wants them to embrace who they are and become even stronger, more awesome versions of themselves. Nia also hosts the weekly Lift Like a Girl Podcast. Nia’s philosophy revolves around sane and simple principles when it comes to nutrition and strength training and her main goal is to help YOU achieve your health, fitness, and physique goals the sane and simple way so …

Alex Viada of Complete Human Performance discusses energy systems, benefits of concurrent training, how to program it correctly, and nutritional/hydration considerations for endurance athletes. Alex Viada, NSCA Certified Strength and Conditioning Specialist and USA Triathlon Coach, is the founder and co-owner of Complete Human Performance. He has over ten years of personal training and coaching experience with athletes of all ages and levels, including eight years of working with athletes with a disability. A graduate of Duke University, currently enrolled in a Masters of Physiology program at NC State University, Alex spends his free time training for and competing in …

Danny breaks down how much protein you should eat each day, at what times and how much post-workout.