Nutrition for Sports, Exercise & Weight Management

Fueling Performance

When you exercise, your body relies on a balance of carbohydrates, protein, and fat to supply energy, repair tissue, and maintain immune function. Understanding how each macronutrient contributes can help you design a diet that supports both training and competition.

Carbohydrates

Carbohydrates are the primary fuel for highintensity activities such as sprinting, weightlifting, and interval training. Glycogen stores in muscle and liver provide quickaccess energy. Aim for 57g of carbohydrate per kilogram of body weight per day for moderate training, and up to 10g/kg for elite endurance athletes.

Protein

Protein supports muscle repair, growth, and enzyme production. The recommended range is 1.22.0g per kilogram of body weight daily, depending on training volume and goals. Highquality sources include lean meats, dairy, eggs, soy, and legumes.

Fats

Fats are essential for longduration, low to moderateintensity exercise and hormone synthesis. About 2035% of total calories should come from healthy fats such as nuts, seeds, avocados, olive oil, and fatty fish.

Micronutrients

Vitamins and mineralsespecially iron, calcium, vitaminD, and the Bcomplex groupplay crucial roles in oxygen transport, bone health, and energy metabolism. A varied diet rich in fruits, vegetables, and whole grains usually meets these needs.

Hydration: The OftenOverlooked Player

Even a 2% loss in body water can impair strength, power, and cognition. Strategies differ by sport, climate, and individual sweat rate.

Consider electrolyterich drinks for hot conditions or highsweat rates. Caffeinated beverages are fine in moderation but should not replace water.

Meal Timing & Composition

When you eat can be as important as what you eat.

PreWorkout

Consume a carbohydraterich snack 3060minutes before activity: a banana with a tablespoon of nut butter, a small bowl of oatmeal, or a granola bar. Keep protein modest (1015g) to avoid gastrointestinal discomfort.

During Exercise

For sessions longer than 60minutes, replenish 3060g of carbohydrate per hour via gels, dried fruit, or sports drinks. Fluid intake follows the hydration guidelines above.

PostWorkout Recovery

The "anabolic window" extends up to 2hours after exercise. Aim for a 3:1 or 4:1 carbohydratetoprotein ratio (e.g., 40g carbs + 10g protein). Examples:

• Chocolate milk (250ml)
• Greek yogurt with berries and honey
• Wholegrain toast with turkey and avocado

Daily Meal Pattern

Spread protein intake evenly across 35 meals to maximize muscle protein synthesis. Include a source of complex carbohydrate and fiber at each meal for sustained energy.

Weight Management for Active Lifestyles

Balancing caloric intake with expenditure is the cornerstone of weight control. For athletes, the goal is often body compositionmaintaining lean mass while reducing excess fat.

Calculate Your Needs

Use a reliable equation (e.g., MifflinSt Jeor) to estimate basal metabolic rate, then apply an activity factor (1.41.9). Adjust by 250500kcal for gradual loss (0.5kg/week) or increase similarly for leanmass gain.

Quality Over Quantity

Prioritize nutrientdense foods that support training performance. Highvolume, lowcalorie options (vegetables, fruits, brothbased soups) can help create a caloric deficit without sacrificing nutrients.

Strength Training Matters

Resistance exercise preserves muscle during calorie restriction and stimulates metabolic rate. Pairing strength sessions with moderate cardio yields the best bodycomposition results.

Practical Tips to Implement Today

• Plan meals around training dayslarger carbohydrate portions when training intensively.
• Keep a water bottle handy; aim for 23L of fluid daily, more in hot environments.
• Batchcook grains and proteins on weekends to simplify weekday meals.
• Track intake for a week using a reputable app; adjust portions based on energy levels.
• Include at least two servings of fatty fish per week for omega3s that aid recovery.
• Listen to hunger cues; avoid eating out of boredom or stress.

Remember, nutrition is highly individualized. Use these guidelines as a foundation, experiment with what feels best for your body, and consider consulting a registered dietitian for personalized advice.