Leena Watts
Nutrition is a key component of an athlete's performance and health. Athletes require a lot of energy to fuel their training and competing, and their nutritional needs can vary depending on their age, professional level, and the type of sport. A well-planned diet can enhance an athlete's performance, help build muscle, and protect the body from injuries. Carbohydrates are an excellent source of fuel for athletes, and their diets are typically higher in carbs. However, it is important to choose whole grains, fruits, and vegetables over processed sugary carbs. Athletes should also focus on consuming enough protein, vitamins, and minerals, and ensure they are well-hydrated. Working with a dietitian can help athletes make the right dietary choices and tailor their diet to their specific needs and goals.
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What You'll Learn
Carbohydrates
However, it is important to note that sugary carbohydrates such as candy bars or sodas do not contain the other nutrients required by athletes. While eating these sugary snacks just before practice or competition can give athletes a quick burst of energy, they may also cause a "crash" or cause the athlete to run out of energy before they finish working out. Therefore, athletes should aim to minimise their intake of high-fat and high-sugar foods such as biscuits, cakes, pastries, chips, and fried foods.
Athletes who exercise strenuously for more than 60 to 90 minutes every day may need to increase their energy intake, particularly from carbohydrate sources. Current recommendations for carbohydrate requirements vary depending on the duration, frequency, and intensity of exercise. For example, athletes in sports with a focus on weight, such as wrestling, swimming, dance, or gymnastics, might feel pressured to lose weight. In such cases, it is important to work with a dietitian to ensure that health and performance do not suffer in the process of controlling weight.
Overall, a well-planned, nutritious diet should meet most of an athlete's vitamin and mineral needs, and provide enough protein to promote muscle growth and repair. Sports nutrition plans should be tailored to the individual athlete, taking into account their specific sport, goals, food preferences, and practical challenges.
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Fats and proteins
Athletes have higher energy demands than the average person, and the key sources of energy are carbohydrates, fats, and proteins. It is crucial for athletes to consume these in a balanced way.
Fats
Fats are crucial for health, with joint structure, cell membranes, and hormonal production all dependent on adequate intake. Vitamins A, D, E, and K are fat-soluble, and muscle growth is dependent on a fat-based steroid hormone. Monounsaturated and polyunsaturated fats are considered healthy fats, helping to increase HDL cholesterol and decrease LDL cholesterol. Omega 3 and 6 fatty acids are considered essential as the body cannot make them from other nutrients.
Fats have more calories per gram than both protein and carbohydrates, so they can help with weight gain. However, decreasing fat in the diet can help with weight loss as it is more difficult to overeat less filling carbohydrates. Fats are digested more slowly than protein and carbs, so eating a fatty meal before or after a workout is not optimal.
Proteins
Protein is essential for muscle development and repair. Every cell is made up of protein, and the body uses protein to rebuild structures that are damaged during exercise. If an athlete is not getting enough protein in their diet, their recovery after exercise will decline, and their healing time will increase.
The general rule for protein intake is 0.6-1.0 grams of protein per pound of body mass, or 1.0 g/kg to 1.6 g/kg per day, depending on the intensity and duration of the exercise. For strength/power exercise, the recommendation is 1.6 to 2.0 g/kg/day. The current RDA for protein in healthy adults is 0.8 g/kg body weight per day.
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Vitamins and minerals
A well-planned, nutritious diet is essential for athletes to meet their vitamin and mineral needs and optimise their performance. Vitamins and minerals are essential for overall health and can be obtained from a balanced diet that includes a variety of whole foods.
Calcium and iron are two critical minerals for athletes. Calcium plays a vital role in building and maintaining strong bones, which is crucial for athletes to protect against stress fractures. Dairy products such as low-fat milk, yoghurt, and cheese are excellent sources of calcium. Iron, on the other hand, is essential for preventing anaemia and ensuring optimal oxygen transport and muscle function. Lean red meat, poultry, fish, and leafy green vegetables are good sources of iron.
Vitamins play a supporting role in an athlete's diet by boosting overall health and performance. Vitamin D, for example, aids in calcium absorption and bone health. It can be obtained from fatty fish like salmon, egg yolks, and fortified foods like dairy and cereals. Vitamin C, abundant in citrus fruits, berries, and bell peppers, promotes immune function and helps protect against oxidative stress caused by intense exercise. Vitamin B-complex, found in whole grains, lean meats, and leafy greens, supports energy metabolism and red blood cell formation.
Additionally, athletes should prioritise consuming nutrient-dense and high-fibre foods. Whole grains like brown rice, oatmeal, and whole-wheat bread are excellent sources of fibre and other nutrients. They provide a sustained release of energy, keeping athletes energised throughout their training and competitions.
It is important to note that the specific vitamin and mineral requirements may vary depending on the athlete's age, gender, and the type of sport they engage in. Consulting with a dietitian or sports nutrition specialist can help athletes tailor their diet to meet their unique needs and ensure they are consuming a balanced variety of vitamins and minerals.
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Whole foods
The DASH diet, for example, is a whole-food-based plan that is rich in nutrients and may be especially beneficial for female athletes. This diet encourages the consumption of foods high in calcium, such as low-fat dairy, to promote bone health and increase bone density. Similarly, the Mediterranean diet limits processed foods and encourages the consumption of whole foods like fruits, vegetables, whole grains, legumes, nuts, and seeds, with moderate amounts of animal products. This diet has been linked to improvements in athletic performance and physical fitness.
Athletes who exercise strenuously for extended periods may need to increase their energy intake, particularly from carbohydrate sources. Carbohydrates are essential for athletes as they are broken down into glucose, the body's primary energy source. Whole foods that are rich in unrefined carbohydrates, like wholegrain breads and cereals, should form the basis of an athlete's diet.
It is important to note that nutritional needs can vary depending on factors such as the athlete's sport, age, and individual goals. Working with a dietitian can help ensure that an athlete's diet is tailored to their specific needs and performance goals without compromising their health.
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Fluids
The amount of fluid required varies depending on the individual's age, size, level of physical activity, and environmental temperature. As a general guideline, athletes should consume 1.25 to 1.5 litres of fluid for every kilogram of body weight lost during exercise. For events lasting less than an hour, water is usually sufficient. However, for longer durations or hot and humid conditions, sports drinks containing carbohydrates and sodium chloride are recommended to replenish energy and fluid/electrolyte losses. The consumption of sodium-containing fluids and snacks after exercise aids rehydration by stimulating thirst and fluid retention.
It is important to note that caffeine can be dehydrating and may lead to cramps, so it is advisable to avoid caffeinated beverages on the day of a competition, unless you are a regular caffeine drinker. In that case, ensuring adequate hydration with additional fluids is crucial. Salt tablets are also not recommended for rehydration, as they can lead to dehydration and stomach issues when not accompanied by sufficient water intake.
Overall, proper hydration is key for athletes to maintain their physical and mental performance, regulate body temperature, and support their overall health and growth.
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Frequently asked questions
A good diet plan for athletes is one that is safe, effective, and sustainable. It should be nutritionally balanced, providing the athlete with the nutrients they need to perform at their best. The diet should be tailored to the individual athlete, taking into account their specific sport, goals, food preferences, and practical challenges. It is also important to note that athletes tend to perform at their best when they receive adequate sleep along with healthy food choices.
Athletes should focus on eating whole, fresh, and unprocessed foods that are rich in nutrients. Carbohydrates are an excellent source of fuel for athletes, with good sources including fruits, vegetables, and whole grains. Athletes should also aim to consume adequate protein to promote muscle growth and repair, as well as healthy fats. It is important to avoid restrictive diets or eliminating entire food groups unless advised by a healthcare professional.
Athletes should limit their intake of ultra-processed and high-fat foods, such as biscuits, cakes, pastries, chips, and fried foods. Sugary snacks and drinks should also be minimised as they can lead to energy crashes during workouts. It is also important for athletes to be mindful of any foods that they know do not sit well with them, as everyone's body is different.
