Sports Nutrition

Pathway Contributor: Heather Petrie

Bio:
Heather Petrie is a registered dietitian currently working as a PEN evidence analyst and living in Toronto. She holds a Bachelor of Arts in Psychology and a Bachelor of Science in Nutrition with Honours both from Acadia University and a Master of Science degree, with a specialization in nutrition and exercise metabolism from the University of Guelph.

Contributions:

• Are athletes at greater risk of iron deficiency and does exercise training impact iron status?  

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• Is creatine supplementation safe and effective for improving exercise performance and increasing lean body mass in adolescents and adults undergoing exercise training?  

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• Are high carbohydrate diets consumed during training more effective for improving endurance exercise performance than a diet lower in carbohydrate and/or high in fat?  

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• Is carbohydrate loading effective for improving muscle glycogen concentrations and exercise performance?  

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• Are there any sex differences in the ability of athletes to carbohydrate load?  

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• What is the effect of a pre-exercise meal approximately two to four hours before exercise?  

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• What is the effect of a pre-exercise meal within one to 1.5 hours before exercise?  

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• What is the effect of a pre-exercise meal when dietary carbohydrate is also available during exercise?  

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• What are the effects of consuming carbohydrate during exercise that lasts longer than one hour?  

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• What are the effects of consuming carbohydrate during exercise that lasts approximately one hour or less?  

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• What is the optimal dose and timing of carbohydrate ingestion during recovery from exercise for glycogen resynthesis?  

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• Does alcohol consumption interfere with post-exercise (recovery)?  

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• Do sports drinks (carbohydrate-electrolyte solutions) help healthy children and adolescents maintain hydration and exercise performance better than plain water?  

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• Is coconut water a safe and effective oral hydration solution for exercise?  

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• Is coconut water a safe and effective oral hydration solution for exercise?  

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• What is the effect of carbohydrate ingestion during high intensity intermittent exercise and sports (such as “stop and go” or team sports) on various performance outcomes?  

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• What is the optimal amount, type and timing of protein intakes for athletes?  

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• What is the effect of iron supplementation and dietary changes among iron deficient athletes on hematological and exercise parameters and is supplementation recommended for athletes, whether iron replete or deficient?  

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• Sports Nutrition - Creatine Background

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• Exercise and Fluid Replacement Among Children Background

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• Coconut Water Background

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