Leena Watts
When taking up running, it is important to consider the impact on your nutritional needs. Running is an excellent form of exercise, but it can also be demanding on the body, and a good diet is key to achieving your fitness goals. The right diet for runners will depend on the individual, taking into account their weight, height, energy expenditure, and mileage. A balanced diet with adequate carbohydrates, protein, and fats is essential to keep runners fuelled and satisfied. Carbohydrates are especially important, providing the body with its primary source of energy. Runners should also focus on consuming enough fruits and vegetables, which provide the vitamins and minerals needed to help the body function and recover. It is also important to remember that dietary fat is good for providing essential fatty acids and aiding recovery and immune health.
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What You'll Learn
Carbohydrates are key
Runners should aim to get between 45% and 70% of their calories from carbohydrates. This can be achieved by eating plenty of fruits and vegetables, which also provide micronutrients such as vitamins and minerals that aid in muscle function and recovery. Carbohydrates are especially important for runners who are training for long periods, as they provide quick energy. For example, runners who are running for 1 to 2.5 hours should aim to consume 30-60g of carbohydrates per hour.
It is important to note that not all carbohydrates are created equal. Simple carbohydrates, such as sugar, can cause a spike in blood sugar and energy levels, followed by a crash. Complex carbohydrates, on the other hand, provide more sustained energy levels. Examples of complex carbohydrates include whole grains, starchy vegetables, and legumes.
In addition to carbohydrates, runners should also focus on consuming adequate protein and healthy fats. Protein is important for muscle repair, while healthy fats provide essential fatty acids that the body cannot produce itself. These nutrients are important for recovery, immune health, and preventing inflammation and fatigue.
It is also worth noting that dietary changes should be made gradually, especially for runners in training. Making sudden and extreme changes to your diet can lead to nutrient deficiencies and energy deficits, which can negatively impact your running performance. Instead, make small changes and experiment with different foods to see what works best for your body.
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Micronutrients and antioxidants
Vitamins are essential micronutrients for runners. Vitamin C, an antioxidant, can help reduce the risk of getting sick after intense exercise. It also helps the body absorb iron, which is important for immune function, energy production, and muscle repair. Vitamin B12 is another important vitamin for runners, as it can help prevent chronic fatigue and improve overall energy levels. Vitamin D, in combination with calcium, helps maintain bone health and reduce the risk of stress fractures. Other vitamins that runners should focus on include vitamin A, vitamin E, and vitamin K, which are all fat-soluble and important for recovery and immune health.
Minerals are also crucial micronutrients for runners. Magnesium, for example, plays a vital role in regulating muscle function, nerve function, blood sugar levels, and blood pressure. It is also critical for maintaining strong bones and regulating calcium and vitamin D levels in the body. Zinc is another important mineral that aids in immune function, energy production, and muscle repair.
To ensure adequate intake of micronutrients and antioxidants, runners should consume a variety of whole foods. This includes fruits and vegetables, which are rich in vitamins and antioxidants, as well as lean protein sources such as fish, poultry, beans, lentils, and tofu. Oily fish, such as salmon and mackerel, provide omega-3 fatty acids, which are important for overall health. Additionally, including good fats in the diet is crucial, as they help absorb fat-soluble vitamins and provide essential fatty acids. However, it is important to limit saturated fats, as they can increase the risk of heart disease.
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Protein for muscle repair
A runner's diet should contain a healthy balance of macronutrients, including carbohydrates, proteins, and fats, as well as micronutrients from plant foods. While carbohydrates are essential for energy, protein is crucial for muscle repair and recovery.
Protein consists of combinations of structures called amino acids, which are the building blocks of the body. There are 20 amino acids that form muscles, bones, tendons, skin, hair, and other tissues. Eight of these amino acids are essential and must be obtained from your diet. Animal-based foods, such as dairy, meat, fish, and eggs, provide a complete source of amino acids. However, it's important to note that a high-protein diet alone will not increase muscle mass. It is the combination of heavy resistance training with a high-protein diet that will lead to increased muscle mass and weight.
For muscle recovery during endurance training, a protein intake of 1.2 to 1.7 grams per kilogram of body weight is recommended. Some sources suggest a range of 1.6 to 2.5 grams per kilogram, while others recommend 1.8 to 2.7 grams. This higher protein intake has been linked to improved immune system function in athletes, resulting in fewer respiratory illnesses.
To ensure adequate protein intake, it is beneficial to space protein consumption throughout the day. This keeps the body supplied with amino acids and supports recovery and performance. Lean meats, low-fat dairy, and eggs are calorie-efficient sources of protein. For example, a 3-ounce broiled sirloin steak with the fat trimmed contains 24.6 grams of protein and 186 kilocalories. Including a variety of whole foods in your diet ensures not just sufficient protein but also a range of vitamins, minerals, and antioxidants that further enhance recovery and performance.
It is important to note that individual dietary needs may vary. Factors such as weight, height, energy expenditure, and mileage run all influence caloric and nutrient requirements. Consulting with a registered dietitian can help determine specific protein needs and ensure a well-rounded approach to nutrition and performance.
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Good fats vs. bad fats
A runner's diet should include a healthy balance of macronutrients, adequate carbohydrates, and micronutrients from plant foods. Carbohydrates are the cornerstone of a runner's diet as they provide the body with its primary source of energy. However, fats are also an important part of a runner's diet and can provide numerous benefits.
There are two major types of dietary fat: saturated and unsaturated. Saturated fats, found in pies, cakes, biscuits, sausages, bacon, and processed foods, can raise harmful cholesterol levels and increase the risk of heart disease if consumed in excess. On the other hand, unsaturated fats, especially omega-3 fatty acids, provide many health benefits. They can lower triglyceride levels and blood pressure while raising HDL (good) cholesterol levels, thus improving heart health.
Good fats are a valuable source of sustainable energy and are necessary for the absorption of vitamins A, D, E, and K. They are also essential for the production of important hormones, including estrogen and testosterone. Healthy fats can be found in foods such as oily fish (salmon, mackerel), walnuts, flaxseeds, sunflower seeds, avocado oil, olive oil, chia seeds, and coconut oil.
While fats are important, it is crucial to consume them in moderation. Consuming too much fat can lead to gastrointestinal distress, especially if consumed within a few hours before a run. Additionally, if high-fat foods replace carbohydrates and protein in a runner's diet, it can lead to a lack of energy and impaired recovery. Dietitians recommend minimizing saturated fat to 10% or less of total daily calories and prioritizing unsaturated fats.
In summary, a runner's diet should include a balance of carbohydrates, proteins, and fats. While carbohydrates are essential for energy, good fats provide additional benefits such as improved heart health, hormone regulation, and enhanced vitamin absorption. By including healthy fats in their diet, runners can improve their overall health and performance.
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Caloric needs and mileage
It is important for runners to understand their caloric needs to ensure they are consuming enough energy to support their training regimen. A person's caloric needs will depend on various factors, including weight, height, and energy expenditure. Generally, runners should increase their calorie intake as they increase their mileage to properly recover and perform.
Carbohydrates are essential for runners as they provide the body with glucose, the primary source of energy during exercise. The body stores carbohydrates as glycogen, which is released as energy when glucose stores are depleted. Distance runners, in particular, require more carbohydrates to support their endurance. The American Council on Exercise (ACE) recommends a diet of 55% to 65% carbohydrates for extended runs or marathon training. Similarly, other sources suggest that 60% to 70% of a runner's calories should come from carbohydrates.
However, it is important to note that carbohydrates should be obtained from whole grains and fruits rather than simple sugars and highly processed foods. Additionally, runners should also focus on consuming lean protein and healthy fats, with each accounting for 15% to 20% of their total calorie intake. Examples of lean protein include fish, poultry, beans, lentils, and tofu. Good sources of healthy fats include nuts, seeds, nut butters, avocados, and olive or canola oil.
While caloric needs increase with mileage, runners should be mindful of consuming too many saturated fats, as this can lead to increased levels of harmful cholesterol and a higher risk of heart disease. Instead, runners should focus on including good fats in their diet, such as omega-3 fatty acids found in oily fish like salmon and mackerel. Additionally, runners should ensure they are consuming adequate micronutrients, such as vitamins and minerals, which can be obtained from a diet rich in fruits and vegetables.
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Frequently asked questions
The best diet for runners typically includes a balance of the three macronutrients: carbohydrates, proteins, and fats. It is recommended that runners get 60% to 70% of their calories from carbohydrates, with lean protein and healthy fats each accounting for 15% to 20% of their remaining calories.
The best time to start a runner's diet is when you begin a running plan. Starting small and building on those changes is recommended.
Runners should focus on eating plenty of fruits and vegetables, which will provide them with the micronutrients, vitamins, and minerals that help the body function and recover from workouts. Carbohydrates are also essential for a runner's diet, as they provide the body with energy.
Runners should avoid eating less than 20% of their calorie intake from fat. Sources of saturated fat, such as pies, cakes, biscuits, and fatty meats, can raise levels of harmful cholesterol and increase the risk of heart disease.
