About Jeff Rothschild

Professional Background

Jeff Rothschild holds a Master's in Nutritional Science, a PhD in Exercise Physiology, and is a Registered Dietitian (RD) and Board Certified Specialist in Sports Dietetics (CSSD). [20][22] He is based at the Sports Performance Research Institute New Zealand (SPRINZ), where he conducts research and provides world-class performance analysis support leveraging sports nutrition, exercise physiology, data science, and research expertise. [1][3][20] Rothschild runs Eat. Sleep. Fit., an online sports nutrition coaching service for endurance athletes, working with Olympians and pros like 20X Grand Slam winner Mike Bryan. [21][22]

Endurance Sports Nutrition

Rothschild specializes in fueling strategies for triathletes and endurance athletes, stressing the science behind carbohydrate intake, daily energy requirements, and electrolyte balance. [1][3][10] He discusses pre-exercise nutrition habits, beliefs, and mismatches between training and dietary intake, advocating carbs as both fuel and signaling molecules for adaptations. [7][12][13] Key topics include carbohydrate loading, manipulation during training, and practical apps like his shiny dashboard for energy balance calculations. [6][12][14]

Supplements and Performance

He reviews dietary supplements' impact on endurance adaptations, debunking myths around antioxidants and promoting creatine for brain health, cardiovascular benefits, and daily supplementation at recommended doses. [9][11][15] Rothschild emphasizes evidence-based use, noting most supplements fail to deliver promised results. [9]

Research Contributions

Rothschild co-authors reviews and meta-analyses on topics like dietary manipulations concurrent to endurance training, supplement effects, pre-exercise nutrition practices, glycogen utilization during exercise, and predictors of exercise durability. [13][14][15][18][19] His personal site hosts publications and collaborations with researchers like E. Maunder and AE Kilding. [16][17][18][19]

Media and Outreach

Frequent guest on Fitter Radio podcast, covering fueling science, creatine, and carb strategies across multiple episodes. [1][3][10][11][12] He shares tools like energy balance dashboards at conferences and engages in triathlon communities via blogs and interviews. [6][9]

Note: Content distinguishes this Jeff Rothschild from tech figures (e.g., ex-Facebook VP [2][4][5]) and unrelated obituaries [23]; no affiliation with Rothschild Family Foundation confirmed.