POWERBAR® - Power to Push

Christopher D. Jensen PhD, MPH, RD Nutrition & Epidemiology Researcher

Dr. Jensen is a nutrition researcher at the School of Public Health and the Center for Weight and Health at the University of California, Berkeley. He is also a sports nutrition writer and has years of experience in the design and testing of sports nutrition products. Dr. Jensen is a recreational runner and former basketball player.

Fun Fact: Chris loves running on the beach and playing the drums.

Jenna A. Bell-Wilson PhD, RD, CSSD, Registered Dietitian & Board Certified Specialist

A registered dietitian, Dr. Bell-Wilson earned her doctorate with distinction in Health and Human Performance at the University of New Mexico. A triathlete and Ironman finisher, she provides nutrition consultation to elite and professional athletes, including Ironman World Champions.

Fun Fact: Jenna finished the 2007 Coeur D’Alene Ironman in 14:27.

Alex M. McDonald MD, Medical Doctor and Professional Triathlete

A graduate with a medical degree from the University of Vermont and also the Amateur Ironman World Champion at Kona 2007, Alex is temporarily putting his medical career on hold to race as a professional triathlete.

Fun Fact: While a 4th-year medical student, Alex found time to train and win Ironman USA Lake Placid in 2007

Ryan T. Hartz MS, RD, CSSD, POWERBAR® Sports Nutritionist, Consumer Services

A Registered Dietitian with a master's degree in Sports Nutrition and Exercise Science from Marywood University in Scranton, PA, Ryan has been working with POWERBAR® since 2007 as the Consumer Services Sports Nutritionist. Ryan enjoys running and is training for his first marathon.

Fun Fact: Ryan's favorite race is the Pittston Tomato Festival 5k, which ends with a grueling tomato fight.

Matt Erlenbusch MS, RD, Private Practice Nutrition Consultant/Coach

A Registered Dietitian with a MS in Exercise Science, Matt has lead-authored research on fuel metabolism and endurance sport performance in an international scientific journal. Also a premier amateur athlete, he has ranked in the top 18% at the Hawaii Ironman, owns a 4:18 half-ironman, and a sub 3-hour marathon posting.

Fun Fact: Matt’s latest athletic pursuits: 100-mile mountain bike races and cyclocross!

Tricia L. Griffin RD, CSSD, POWERBAR Sports Nutritionist

A board-certified specialist in sports dietetics, registered dietitian, and member of the American College of Sports Medicine, Tricia has served as a sports nutrition consultant for a wide range of athletes, from club teams to professional competitors. Tricia is an avid runner and competes in marathons.

Fun Fact: Tricia once single-handedly corralled escaped cattle during a run near her house in Arizona.

Trent Stellingwerff PhD, BSc, Senior Research Scientist — Performance Nutrition, Nestle Research Center

Trent has a PhD in Exercise and Skeletal Muscle Physiology. Widely published in major scientific and medical journals, Dr Stellingwerff’s research- and academic-based background combined with his coaching and personal competitive experiences helps inform his nutritional recommendations for athletes.

Fun Fact: Trent, an active runner, competes in ECO-Challenges and road races. He coaches several Olympic-level athletes, including his wife, ranked top-30 in the world in women's 1500m