Sports Nutrition & PerformanceEnhancing Supplements

Whether you are a recreational athlete, a weekend warrior, or a professional competitor, what you eat and the supplements you use can make a decisive difference in how you feel, perform, and recover. This guide provides a concise overview of the core principles of sports nutrition, examines the most common performanceenhancing supplements, and highlights safety considerations you should keep in mind.

1. Foundations of Sports Nutrition

1.1 Energy Balance

Energy balance is the relationship between calories consumed and calories expended. For athletes, the goal is usually to achieve a slight caloric surplus (to support training adaptations) or to maintain a stable intake while optimizing nutrient timing.

1.2 Macronutrients

• Carbohydrates Primary fuel for highintensity work. Aim for 57g/kg body weight per day for moderate training, and 710g/kg for heavy endurance sessions.
• Protein Supports muscle repair and growth. Recommended 1.22.0g/kg body weight daily, spread across 35 meals.
• Fats Essential for hormone production and longduration energy. About 2035% of total calories, with an emphasis on unsaturated sources.

1.3 Micronutrients

Vitamins and minerals are involved in energy metabolism, oxygen transport, and immune function. Iron, calcium, vitaminD, and Bcomplex vitamins often require special attention for athletes, especially those on restrictive diets.

1.4 Hydration

Even a 2% loss in body water can impair performance. General guidelines:

• Drink 500ml of water 23hours before exercise.
• Sip 150250ml every 1520minutes during activity.
• Replace 150% of fluid lost postexercise (weigh yourself before and after).

2. Timing Matters: Pre, In, and PostWorkout Nutrition

2.1 PreWorkout (13hours before)

Focus on a carbohydraterich meal with moderate protein. Example: oatmeal with banana and a scoop of whey protein. Keep fat and fiber low to avoid gastrointestinal distress.

2.2 During Exercise

For sessions longer than 60minutes, consume 3060g of carbs per hour (e.g., sports drinks, gels, or dried fruit). Electrolytecontaining fluids help replace sodium and potassium losses.

2.3 PostWorkout (within 30minutes)

A 3:1 or 4:1 carbohydratetoprotein ratio accelerates glycogen replenishment and muscle protein synthesis. A typical recovery shake might contain 40g carbs and 10g protein.

3. Overview of PerformanceEnhancing Supplements

Supplements can be useful when dietary intake falls short, but they are not a shortcut. Below is a categorised list of the most researched products, their proposed benefits, typical dosing, and safety notes.

3.1 Creatine Monohydrate

• Benefit: Increases phosphocreatine stores, improving shortburst power and strength.
• Dose: 35g daily (no loading phase needed, though 20g/day for 5days is common).
• Safety: Wellstudied; minor weight gain from water retention. Ensure adequate hydration.

3.2 BetaAlanine

• Benefit: Raises muscle carnosine, buffering acid and delaying fatigue in highintensity exercise.
• Dose: 46g per day, split into 800mg1g doses to reduce tingling (paresthesia).
• Safety: Generally safe; tingling is harmless.

3.3 Caffeine

• Benefit: Enhances alertness, reduces perceived effort, and can improve endurance performance.
• Dose: 36mg per kg body weight 3060minutes before activity.
• Safety: May cause GI upset or jitteriness; avoid high doses close to bedtime.

3.4 BranchedChain Amino Acids (BCAAs)

• Benefit: May reduce muscle soreness and support protein synthesis when training fasted.
• Dose: 510g before or during workout.
• Safety: No major risks, but wholeprotein sources generally provide sufficient BCAAs.

3.5 Whey Protein

• Benefit: Rapidly digestible source of essential amino acids; promotes muscle repair.
• Dose: 2030g postexercise or as a snack.
• Safety: Choose lowlactose or plantbased variants if dairy intolerant.

3.6 Electrolyte Powders

• Benefit: Replace sodium, potassium, magnesium, and calcium lost in sweat.
• Dose: Follow label; typical 1g in 500ml water during prolonged activity.
• Safety: Excess sodium can raise blood pressure; tailor intake to climate and sweat rate.

3.7 Nitrates (Beetroot Juice)

• Benefit: Improves vascular efficiency, enhancing endurance performance.
• Dose: 300600ml beetroot juice or 68mmol nitrate 23hours preexercise.
• Safety: Can cause low blood pressure; avoid if youre on antihypertensive medication.

3.8 Omega3 Fatty Acids

• Benefit: Antiinflammatory; may aid recovery and joint health.
• Dose: 13g EPA/DHA combined daily.
• Safety: High doses may affect blood clotting; stay below 5g/day without medical supervision.

4. Choosing Safe and Effective Supplements

1. Check thirdparty certification. Look for NSF Certified for Sport, InformedSport, or USP verification to reduce contamination risk.
2. Prioritise whole foods. Supplements should fill gaps, not replace balanced meals.
3. Read scientific literature. Favor products with peerreviewed studies supporting claimed benefits.
4. Consult a professional. A sports dietitian or physician can tailor recommendations to your sport, health status, and goals.

5. Common Myths Debunked

• Myth: More protein always means more muscle. Reality: Muscle growth plateaus after ~2g/kg; excess protein is oxidized for energy.
• Myth: All supplements are safe because theyre natural. Reality: Natural compounds can still cause adverse effects or interact with medications.
• Myth: You can replace meals with protein bars. Reality: Whole foods provide fiber, phytonutrients, and satiety that bars lack.

6. Sample Daily Meal Plan for a 70kg Endurance Athlete

07:00  Breakfast    80g rolled oats cooked with 250ml skim milk    1 banana sliced    30g whey protein mixed in    10g almond butter10:00  Midmorning snack    Greek yogurt (150g) + berries    5g creatine monohydrate (mixed in water)13:00  Lunch    Grilled chicken breast (150g)    Quinoa (100g cooked)    Mixed vegetables drizzled with olive oil    Apple16:00  Preworkout    1 slice wholegrain toast with honey    200ml beetroot juice (6mmol nitrate)17:30  Workout (90min)    During: 500ml sports drink (30g carbs) + electrolyte tablets19:00  Postworkout recovery    40g carbohydrate beverage + 10g whey protein (3:1 ratio)    5g betaalanine (if not taken earlier)20:30  Dinner    Baked salmon (180g)    Sweet potato (200g)    Steamed broccoli    1 tsp flaxseed oil22:00  Before bed    Cottage cheese (100g) with a handful of walnuts    1g magnesium supplement (optional for sleep)        

7. When to Seek Professional Guidance

If you experience persistent fatigue, unexplained weight loss, gastrointestinal issues, or have a medical condition (e.g., diabetes, hypertension), consult a qualified healthcare provider before adjusting your nutrition or supplement regimen.

*The information presented here reflects current scientific consensus as of 2026 and is intended for educational purposes only. Individual needs vary; personalized advice from a registered dietitian or sports physician is recommended.*