FUELED BY SCIENCE. POWERED BY ATHLETES
Since 1992, Science in Sport has transformed research into real-world results, creating performance nutrition that delivers when it counts. Every product is engineered through elite-level science, tested in competition, and trusted by athletes who demand reliable energy for every mile, rep, and race.
SINCE 1992
Pioneering performance nutrition through decades of innovation.
105 OLYMPIC MEDALS
Fueling champions at the 2024 Paris Games.
300+ ELITE TEAMS
Chosen by top athletes in cycling, soccer, triathlon, and more.
LEADING PERFORMANCE
The world’s most trusted performance nutrition brand.
INNOVATING THE FUTURE OF FUELING
Led by Professor James Morton, our Performance Solutions team partners with elite organizations to pioneer new ways to fuel, recover, and perform. We embed certified Performance Nutritionists directly within elite programs—from cycling and football to endurance sports—to deliver tailored nutrition strategies grounded in proven science.
Our research partnerships span leading global institutions, including the University of Bath, the Australian Catholic University, and the Canadian Sport Institute Pacific. Every study, every breakthrough, is tested in the field, then refined, peer-reviewed, and published in top journals like The Journal of Applied Physiology and Medicine & Science in Sports and Exercise.
TRUSTED BY CHAMPIONS
At the 2024 Paris Olympic Games, athletes fueled by SiS brought home more than 100 medals. Around the world, more than 300 elite teams and organizations across cycling, football, triathlon, rugby, and other sports rely on SiS to power their training and competition.
SiS is backed by British Cycling, British Triathlon, British Swimming, and British Sailing, as well as top professional teams from Tottenham Hotspur F.C. to the Houston Texans. Whether the goal is Olympic gold or your own Personal Record, our mission is to help athletes of every level go farther, faster, and stronger.
TESTED. TRUSTED.
At Science in Sport, high-performance quality isn’t just a promise; it’s a process. Every formula is independently tested against the World Anti-Doping Agency (WADA) banned substance list and certified through Informed Sport, the world’s most respected third-party testing program for supplements.
Each batch is screened down to 10 nanograms per gram for steroids and 100 nanograms per gram for stimulants, with every test result publicly available at wetestyoutrust.com. Our facilities operate under the World Health Organization’s Good Manufacturing Practices (GMP), ensuring consistency, safety, and purity at every step. So when you grab SiS, you know exactly what’s in it, and more importantly, what’s not.
INFORMED SPORT CERTIFIED
Science in Sport is proud to be part of Informed Sport’s quality assurance program for sports nutrition products. The program certifies that all nutritional supplements and/or ingredients that bear the Informed Sport logo have been tested for banned substances by the world-class sports anti-doping laboratory, LGC.
Banned substances, including steroids, are tested to the level of 10 Nanograms per gram, and stimulants to 100 Nanograms per gram.
Every batch produced receives the recognised and respected Informed Sport certificate.
QUALITY ASSURANCE
PRODUCT & MANUFACTURING REVIEW
Every ingredient, supplier, and site is verified by Informed Sport to meet strict GMP quality standards.
PRE-CERTIFICATION TESTING
At least three final product samples are screened at nanogram precision against WADA’s banned substance list.
CERTIFICATION TESTING
ach certified batch is tested, registered, and publicly verified at wetestyoutrust.com for complete consumer transparency.
OUR EXPERTS
PROFESSOR JAMES MORTON
CHIEF SCIENCE OFFICER
James is the Chief Science Officer at Science in Sport, responsible for research and innovation as well as strategic delivery of our Performance Solutions programme to our elite partners. With over 160 research publications, James is a Professor of Exercise Metabolism at Liverpool John Moores University and has extensive experience in leading Performance Support programmes to some of the world's leading athletes and sports teams.
DR. MARC FELL
SENIOR PERFORMANCE NUTRITIONIST
Marc is a Senior Performance Nutritionist at Science in Sport (SiS), where he plays a role in the Performance Solutions and Science programmes. As part of SiS’s elite partnerships, he is currently embedded with the Great Britain Cycling Team as a performance nutritionist and supports our additional performance solutions partners, including Tottenham Hotspur F.C. Previously, Marc served as an embedded performance nutritionist with the INEOS Grenadiers World Tour cycling team, also through SiS’s elite partnership network. His academic background includes PhD research conducted in collaboration with the former Team Sky cycling team. In addition to his work in elite cycling, Marc has held performance nutrition roles across Premier League Football and Olympic Track and Field.
EXTERNAL ADVISORY BOARD
PROFESSOR LOUISE BURKE
PROFESSORIAL FELLOW (CENTRE FOR HUMAN PERFORMANCE AND METABOLISM, AUSTRALIAN CATHOLIC UNIVERSITY)
Prof. Louise Burke is a sports dietitian with 40 years of experience in the education and counselling of elite athletes. She worked at the Australian Institute of Sport for thirty years, first as Head of Sports Nutrition and then as Chief of Nutrition Strategy. She was the team dietitian for the Australian Olympic Teams for the 1996-2012 Summer Olympic Games. Her publications include over 350 papers in peer-reviewed journals and book chapters, and the authorship or editorship of several textbooks on sports nutrition. She is an editor of the International Journal of Sport Nutrition and Exercise Metabolism. Louise was a founding member of the Executive of Sports Dietitians Australia and is a Director of the IOC Diploma in Sports Nutrition.
She was awarded a Medal of the Order of Australia in 2009 for her contribution to sports nutrition. Louise was appointed as Chair in Sports Nutrition in the Mary MacKillop Institute of Health Research at Australian Catholic University in Melbourne in 2014 and took up this position in a full-time capacity in 2020.
DR TRENT STELLINGWERFF
DIRECTOR OF PERFORMANCE SOLUTION (CANADIAN SPORT INSTITUTE PACIFIC
Dr Trent Stellingwerff serves as Chief Performance Officer (CPO) at the Canadian Sport Institute Pacific (Victoria, Canada), joining CSI Pacific in 2011. In this role, he directs the health & performance staff and has oversight of CSI Pacific R&D and all special projects. He directs several different research projects across different sport performance discipline areas, with Master’s, Phd and Post-Doctorate students involved. He has also provided physiology expertise to Canada’s National Athletics (Track and Field), Rowing, Triathlon and Mountain bike teams. His primary sport and research focuses are in the field of physiology and nutrition interactions, as well as environmental (altitude and heat) expertise and more recently, into research on female health and performance. He co-chairs the Own the Podium Canadian National Sport Relative Energy Deficiency in Sport (REDs) working group. Prior to 2011, Trent was a Senior Scientist in Performance Nutrition for PowerBar at the Nestle Research Centre (Lausanne, Switzerland). Trent has more than 150 peer-reviewed scientific publications and authored 10 book chapters in the areas of exercise physiology, skeletal muscle metabolism, sports nutrition and performance. Trent has been an invited expert presenter and author for many international nutrition consensus statement meetings with the IOC (International Olympic Committee), FINA (Swimming), UCI (Cycling) and World Athletics, and is a member of the International Advisory Board for the IOC Diploma Program in Sports Nutrition and S&C programs. Over the years, Trent has attended and/or serviced athletes and sports over 4 Olympic/Paralympic Games, 4 Commonwealth Games and >15 World Championships across several sports.
CHARLES ASHFORD
ASSISTANT DIRECTOR OF TEAM WELLNESS AND PERFORMANCE NUTRITIONIST (HOUSTON TEXANS)
Charles Ashford is a Performance Nutritionist with over a decade of experience working with elite athletes. Charles currently serves as the Performance Nutritionist for the Houston Texans. Before the Texans, Charles worked as a Performance Nutritionist at Dallas Mavericks and previously had spent time working as a performance nutritionist in collegiate sports at the University of North Texas and Texas Tech University. He holds a master’s degree in sports nutrition and a bachelor’s in sports and exercise sciences. Charles has full practitioner registration on the Sport and Exercise Nutrition Register with the British Dietetic Association alongside additional credentialing in sports nutrition, exercise physiology, and strength and conditioning.
MICHAEL NAYLOR
LEAD PERFORMANCE NUTRITIONIST (CHELSEA F.C.)
Michael Naylor is a Performance Nutritionist who is currently the lead nutritionist of Chelsea F.C. Previously, Michael was the head of Nutrition for the UK Sports Institute, where he led a team of over 20 nutritionists supporting 25 of Team GB's Olympic and Paralympic sports. He was the Head of Nutrition for Team GB at the Rio 2016 Olympics. Additionally, Michael provided nutrition support to England Rugby for over eight years, working with both the Senior Men’s and Women’s teams. In football, Michael was the performance nutritionist at Southampton FC for six seasons and now works with the English Football Association, having been part of the support staff at the 2018 and 2023 World Cups as well as the 2020 and 2023 European Championships. In Formula 1, Michael has been the team consultant nutritionist for McLaren for the past two seasons. He also works at the Marylebone Health Group, providing support to clients with a range of performance and health requirements, including elite tennis players, golfers, and boxers. .
PROFESSOR JAVIER GONZALEZ
PROFESSOR OF NUTRITION AND METABOLISM (UNIVERSITY OF BATH)
Javier is Professor of Nutrition and Metabolism in the Centre for Nutrition, Exercise and Metabolism (University of Bath). His research is focussed on human fuel use. How we get fuel from our diet, burn fuels during exercise; and store fuels when they exceed our requirements. His research group employs a variety of methods to understand human fuel use, including indirect calorimetry, tissue biopsies and stable isotope (IV) infusion and ingestion. These methods across laboratory-based and free-living studies to study carbohydrate and fat metabolism.
PROFESSOR BENJAMIN WALL
PROFESSOR OF NUTRITIONAL PHYSIOLOGY (UNIVERSITY OF EXETER)
Professor Benjamin Wall is an expert in Muscle Physiology with a research portfolio comprising over 125 peer-reviewed publications. His work primarily explores how physical activity and nutrition influence skeletal muscle adaptation to both exercise and across the human lifespan. He earned a BSc in Sport and Exercise Science from the University of Birmingham and a PhD in Skeletal Muscle Metabolism from the University of Nottingham Medical School. Professor Wall currently holds the position of Professor of Nutritional Physiology at the University of Exeter. His research group investigates the role of dietary protein in enhancing muscular adaptations to exercise, both in the context of sports performance and healthy ageing. A key focus of their work is understanding the efficacy of different protein sources, including comparisons between animal- and plant-based options, to support muscle health and function.
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