S2 EPISODE 36 - Fueling Endurance Athletes & Periodizing Body Composition w/ Dr. Trent Stellingwerff PhD

Dr. Bubbs interviews renowned physiologist Dr. Trent Stellingwerff PhD to discuss Eliud Kipchoge's record-breaking performance at the Berlin Marathon and the fueling strategies of elite marathoners. He also talks about the role of glycogen availability as a training regulator and the purposeful application of low carb availability training sessions in elite performers. As well, Trent dives into his past research into body composition periodization in endurance athletes and how it can impact athletic performance, injury risk and illness over a career. He shares insights into daily caloric restriction and weekly bodyweight loss targets as well as factors to consider before implementing this strategy with athletes. Finally, Trent shares his tips for recreational runners on improving performance and health and avoiding the trap of trying to ‘fuel like the pros’. Fantastic insights from a world-leader!

Research Papers

Body Composition Periodization in an Olympic-Level Female Middle-Distance Runner Over a 9-Year Career

 

About Dr. Trent Stellingwerff PhD

Dr. Trent Director Stellingwerff PhD of the Innovation and Research division at the Canadian Sport Institute _ Pacific. An experienced researcher, Trent has more than 40 peer-reviewed scientific publications and is currently on the editorial board for the International Journal of Sports Physiology and Performance and the International Journal of Sports Nutrition & Exercise Metabolism. He has co-authored six book chapters focusing on the role that nutrition can play in supporting elite athlete performance, including a chapter on ’Nutrition for the Endurance Athlete’, for the newest version of the 2013 IOC Sports Nutrition Encyclopaedia. Trent has attended numerous World Championships and Olympic Games as part of Team Canada’s Integrated Support Team and consults w several Olympic athletes from around the world, including his wife Hilary, who competed for Canada in the 1500m at the 2012 Games.

Follow Trent on Twitter @TStellingwerff

S2 EPISODE 26 - Sprinters, Hockey Players & Relative Energy Deficiency in Sport (RED-S) w/ Jen Sygo MSc RD

Season 2 Episode 26, Dr. Bubbs interviews Jen Sygo RD MS, Performance Nutritionist for the NBA’s Toronto Raptors and Athletics Canada to talk relative energy deficiency in sport (RED-S). In this episode, Jen will discuss her recent study on REDS in female sprinters, share primary red flag symptoms and secondary ones to watch out for, and talk about the common misconception of low energy availability in power and sprint sports, and the consequences on performance. Jen also shares new insights on within day energy balance, the difficulties in assessing energy intake and expenditure, when athletes are “circling the drain” and share her experience working with NHL hockey players during the grueling playoff run and fueling in compressed competition schedules. 

Lay-Ups In This Episode

1)    RED-S is Relative Energy Deficiency in Sport is the result of insufficient caloric intake and/or excessive energy expenditure.

2)    ‘Energy availability’ (EA) refers to the amount of energy left over and available for your body’s functions after the energy expended for training is subtracted from the energy you take in from food.

3)    Low Energy Availability is not just a problem for females or endurance athletes, it can impact all athletes.

Link to Research Paper

Prevalence of Indicators of Low Energy Availability in Elite Female Sprinters

About Jennifer Sygo

Jennifer Sygo MS is Registered Dietitian and Performance Nutritionist for the Toronto Raptors and Athletics Canada. She is the author of Unmasking Superfoods, a national best-seller in Canada in 2014. Find out more at JenniferSygo.com and follow Jen on Twitter.