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Chapter 15

Nutrition Reading Chapter 15.docx

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University of Guelph
NUTR 2050
Jess Haines

Nutrition Reading Chapter 15 Pg. 391-392, 395-403 Nutrition for Adolescent Athletes Fluids and Hydration  Young adolescents present a particular vulnerability to heat illnesses because their bodies do not regulate their body temperature as well as those that are older.  They do not pay attention to the signs of fluid loss such as sweating and thirst.  Should regularly consume fluids even if they do not feel thirsty.  Should consume 6-8 ounces prior to exercise, 4-6 ounces every 15 to 20 mins during activity and at least 8 ounces following exercise.  Each pound of activity lost during activity requires ingestion of 16 ounces of fluid to maintain proper hydration.  Should drink no more than 16 oz of fluid each 30 mins to avoid nausea.  Sport drinks that contain no more than 6-8% carbohydrate may allow for better hydration and performance higher than that causes gastric discomfort. Special Dietary Practices  Carbohydrate loading- done by runners and endurance athletes as a week long process that begins with intense training 1 week prior to competition, then the first three days they choose low carbohydrate foods but keep exercising in attempt to deplete muscle glycogen stores. Three days before competition they rest while consuming high carbohydrate levels to promote glycogen formation and storage.  High protein diets- May consume 3-4 times the recommended protein intake with a low intake of carbohydrates. These should be discourage because many protein sources are sources of total and saturated fats which could increase risk of coronary artery disease and because of the reduced carbohydrate intake this may delay digestion and absorption limiting amount of energy available, and puts athlete at risk of dehydration because water is breaking down protein. Dieting, Disordered Eating, and Eating Disorders The Continuum of Eating Concerns and Disorders  Continuum from mild dissatisfaction with body to serious eating disorders (anorexia, bulimia, binge eating disorder).  Body dissatisfaction-> Dieting Behaviors -> Disordered Eating -> Clinically significant eating disorders. Dieting Behaviors  Dieting decreases as males get older and increases as females get older.  Adolescents who reported unhealthy weight control behaviors were more likely to be overweight in the future.  Dieting behaviors have been found to be associated with inadequate intakes of essential nutrients.  Need to focus on long term healthy diet changes not short term dieting.  Dieting should not be viewed as a normative and acceptable behavior particularly among adolescents. Body Dissatisfaction  Body image concerns should not be viewed as acceptable or normative components of adolescence.  Body dissatisfaction contributes to dieting behavior, disordered eating behaviors, and clinical eating disorders.  Dissatisfa
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