Vegetarian diets : nutritional considerations for athletes.

Area of Science:

• Sports Nutrition
• Dietary Science
• Human Performance

Background:

• The nutritional adequacy of vegetarian diets for athletes is frequently debated.
• Concerns exist regarding energy, macronutrient, and micronutrient intake for optimal athletic performance.

Purpose of the Study:

• To evaluate the nutritional quality of vegetarian diets for athletes.
• To identify key nutrients and potential deficiencies for vegetarian athletes.
• To explore the impact of vegetarian diets on athletic performance and health.

Main Methods:

• Literature review and synthesis of existing research on vegetarian diets and athletic performance.
• Analysis of macronutrient and micronutrient requirements for athletes.
• Comparison of nutrient status between vegetarian and non-vegetarian athletes.

Main Results:

• Vegetarian diets, when appropriately planned, can meet energy and macronutrient needs (carbohydrate 45-65%, fat 20-35%, protein 10-35%) for athletes.
• Vegetarian athletes may have lower muscle creatine stores but benefit from creatine supplementation.
• Key nutrients requiring attention include iron, zinc, vitamin B12, vitamin D, and calcium, with plant-based sources available.
• Vegetarians often exhibit higher antioxidant status (vitamins C, E, beta-carotene).

Conclusions:

• Vegetarian diets can effectively support athletic performance and health with careful planning.
• Monitoring specific micronutrients and considering supplementation may be necessary for vegetarian athletes.
• Further research is warranted on antioxidant defenses in vegetarian athletes.