Everyone fatigues at the end of an intense exercise bout. However, previous research has indicated that ingestion of a mixed nutrient supplement one hour pre-exercise will increase exercise time-to-fatigue¹. For this experiment, four females between the ages 20-50 participated in a controlled pilot study. Exercise was performed using a row machine, where time- to-fatigue was measured from a baseline of 80% max HR (220 minus age). The nutrient supplement was ingested 1 hour pre-rowing and contained 30g of protein, 5g carbohydrate, and 3g of fat. Results showed that pre-exercise ingestion of a mixed protein supplement did increase row time-to-fatigue.
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Bloomer, Allison D.; Chemmanchery, Beena R.; Liebowitz, Rachel; and Zalaker, Hannah M., "Ingestion of a Nutritional Supplement Pre-Workout Will Increase Exercise Time-to-Fatigue" (2016). Kinesiology 288. 1.