To practice any sport, you need the right equipment: from clothing to the necessary accessories for each activity: rackets, gloves, balls, fins, etc. But none of that will help if your body, the main tool for running, swimming, or jumping, isn't in optimal condition. Proper nutrition is essential for sports performance and reducing the risk of injury.
Sports nutrition is a specialized field that aims to cover all stages of an athlete's life: training, competition, recovery, and rest . It's not just about eating healthily, but about optimizing the relationship between goals achieved and resources used, which we define as athletic performance . This depends on genetic and psychological factors, and, fundamentally, on nutrition.
Eating well is important, but it is not enough
When engaging in regular physical activity, simply "eating healthy" isn't enough. Your diet must be tailored to the specific demands of your activity. For example, those who train in gyms for hypertrophy require a higher percentage of protein-rich foods to promote muscle growth. Conversely, athletes who engage in prolonged exertion, such as cyclists or marathon runners, need to prioritize carbohydrate-rich foods to provide sustained energy.
It's crucial to understand that energy needs vary depending on age, sex, and training volume . Being in preseason is not the same as being in the competitive period. While the preparation phase focuses on general adaptation, competition involves strategies like glycogen loading to ensure energy reserves are at their maximum.
Proper hydration is vitally important. In fact, a significant percentage of injuries could be reduced , especially in non-professional athletes, simply by drinking the right amount of fluids. Even mild dehydration affects both physical performance and mental alertness, causing premature fatigue and cramps.
As a general rule, anyone preparing for a demanding workout should eat two hours beforehand , with a meal that is low in fat and high in carbohydrates. If the time is shorter (less than three hours), a light and easily digestible snack, such as fruit or crackers, is recommended .
After exercise, it's important to help the body recover , so a high intake of protein and carbohydrates is recommended. Ideally, you should eat within 30 minutes of intense activity to take advantage of the muscle recovery window and replenish the energy used.
It is also important to maintain a balance between the type of food consumed daily in relation to the calories burned, avoiding extreme energy deficits that could lead to loss of muscle mass or bone fragility.
Detailed analysis of macronutrients
Carbohydrates: The main fuel
They are the most efficient source of energy for skeletal muscle. They are stored in the liver and muscles as glycogen . It is vital to differentiate between:
- Complex carbohydrates: Found in whole grains, oats, legumes, and vegetables. They provide sustained energy and fiber, essential for good health. intestinal microbiome.
- Simple carbohydrates: Fruits and some sugars provide immediate energy, ideal during competition but should be moderated beforehand to avoid insulin spikes.
Proteins: Building and Repair
Its primary function is muscle protein synthesis . It's not true that massive amounts are needed to gain muscle; hard training is key, and protein provides the support. Recommended sources include lean meats, fish, eggs, tofu, and soy . Intake should be adjusted: strength athletes require more grams per kilogram of body weight than endurance athletes.
Healthy Fats: Lasting Energy
Fats are essential for hormonal function and as fuel during low-intensity, long-duration exercise. Unsaturated fats (olive oil, avocado, nuts) should be prioritized, especially omega-3 fatty acids from oily fish due to their potent anti-inflammatory effect on recovery.
Micronutrients and the importance of electrolytes
Micronutrients, although needed in small quantities, are drivers of performance:
- Sodium and Potassium: They regulate muscle contraction and fluid balance. Their loss through sweat must be replenished to prevent fatigue.
- Calcium and Vitamin D: Essential for the Bone density and prevent stress fractures.
- Iron: Crucial for transporting oxygen to the muscles via hemoglobin. An iron deficiency increases the feeling of fatigue.
- Vitamins B, C and E: Those in group B optimize energy, while C and E act as Antioxidants against oxidative stress from intense exercise.
Hydration and Supplementation Strategies
Water is the most critical nutrient. You shouldn't wait until you feel thirsty, as this is a late sign of dehydration . An effective technique for monitoring hydration status is to observe the color of your urine : it should be clear or transparent.
As for drinks, water is sufficient for workouts shorter than 60-90 minutes. For prolonged efforts or in hot weather, isotonic drinks are preferable as they replenish electrolytes and glucose simultaneously.
Regarding supplements, they should be the last step after a balanced diet. Some with scientific evidence include:
- Creatine: Useful in strength and power sports for ATP resynthesis.
- Caffeine: It improves alertness and reduces the perception of effort.
- Sodium bicarbonate: It helps delay muscle fatigue in anaerobic exercise.
- Whey protein: Practice for post-training recovery.
The use of anabolic steroids or supplements without regulation should be avoided , as they can cause hormonal damage, kidney damage, and serious mental health problems.
Eat well and train
While a balanced diet will provide sufficient energy and optimize the body for proper athletic performance, it's also important to understand that no diet, however effective, will guarantee victory in any competition. Eating well is essential, yes. But it's equally important to follow a training plan tailored to each athlete's goals and objectives.
The key to success lies in the triad: individualized training, tailored nutrition, and restorative rest . Only when these three pillars are aligned can the body reach its full physical and mental potential, minimizing the risk of injury and ensuring long-term, lasting health.