This article was automatically translated from the original Turkish version.
Sports nutrition encompasses science-based dietary strategies designed to support physical performance, meet energy demands during training and competition, accelerate recovery, and minimize injury risk. Sports nutrition is not only important for professional athletes but also for individuals who engage in regular physical activity. Nutrition directly impacts muscle repair, immune system health, body composition management, and overall well-being.
Carbohydrates are the primary energy source for muscles. In endurance sports such as marathon running, triathlon, and cycling, maintaining full glycogen stores is critical for performance. Inadequate carbohydrate intake can lead to early fatigue, muscle weakness, and reduced training quality. Common carbohydrate sources include whole grains, potatoes, rice, fruits, and vegetables.
Proteins are essential for muscle repair and growth. During intense training periods, muscle protein breakdown increases, and adequate protein intake helps accelerate recovery. High-quality protein sources include meat, poultry, fish, eggs, dairy products, and legumes. Daily protein requirements vary depending on training intensity, body weight, and individual goals but typically range from 1.2 to 2.0 g per kilogram of body weight.
Fats serve as an important energy source during prolonged, low-to-moderate intensity exercise. They are also necessary for the absorption of fat-soluble vitamins and hormone production. Healthy fat sources include nuts, almonds, avocados, olive oil, and fatty fish.
Vitamins and minerals are vital for energy metabolism, oxygen transport, immune system function, and bone integrity. The most commonly deficient nutrients in athletes are iron, calcium, vitamin D, and zinc. Fruits, vegetables, dairy products, and whole grains are rich sources of these nutrients.
Fluids and electrolytes lost through sweating during exercise must be replenished. Dehydration can lead to reduced performance, muscle cramps, and heat-related illnesses. Special attention to fluid and electrolyte balance is particularly important during training in hot and humid environments.
A meal consumed 3–4 hours before training, containing complex carbohydrates and protein, helps replenish muscle glycogen stores and reduces muscle breakdown. An appropriate example would be whole wheat pasta with grilled chicken and vegetables.
For endurance exercises lasting longer than 45–60 minutes, it is recommended to consume 30–60 grams of carbohydrates per hour along with sufficient fluids.
A meal containing protein and carbohydrates consumed within the first 30–60 minutes after training helps replenish muscle glycogen stores and supports muscle repair.
In endurance sports, carbohydrate loading is applied; in strength sports, adequate protein and energy intake is prioritized; and in team sports, a balanced nutrition plan is implemented.
Certain dietary supplements can enhance athletic performance. These include protein powders, creatine, BCAAs, caffeine, and isotonic drinks.
Personalized nutrition approaches, plant-based diets, and time-restricted eating have become increasingly popular among athletes.
Essential Nutrients and Athlete Requirements
Carbohydrates
Proteins
Fats
Vitamins and Minerals
Water and Electrolytes
Nutrition Timing and Training Phases
Pre-Training Nutrition
Nutrition During Training
Post-Training Nutrition
Nutrition Strategies by Sport Type
Ergogenic Aids and Supplements
Current Approaches in Sports Nutrition
