Whether you are a marathon runner, triathlete or long-distance cyclist, your performance depends not only on your training and dedication, but also on how you nourish your body. Food supplements have become essential allies for athletes looking to maximize their endurance, accelerate their recovery and maintain a high level of performance. What are the essential food supplements for regular endurance sports practitioners? We will explain their role, their benefits and how to effectively integrate them into your daily routine.

I. The importance of nutritional supplements for endurance athletes

Why food supplements?

Endurance sports impose a high energy demand that often exceeds what traditional diets can provide. Dietary supplements fill nutritional gaps, providing specific nutrients in appropriate amounts to support prolonged exertion. While traditional diets can provide a solid foundation of essential nutrients, they can often be insufficient to meet the specific and intense needs of endurance athletes. However, dietary supplements should not replace a quality diet that covers the athlete's needs. They are there in case of deficiencies, to compensate for difficulties in providing enough of a micronutrient or for malabsorption.

During intense exercise, athletes lose a significant amount of vitamins and minerals through sweat. Minerals such as sodium, potassium, magnesium and calcium are crucial for maintaining electrolyte balance, muscle function and nerve transmission. A deficiency in these micronutrients can lead to cramps, fatigue and performance declines, as we will see later in the article.

II. Food supplements specific to sports practice

• Proteins and amino acids

Proteins are essential for muscle repair and growth. After intense training or competition, muscles experience micro-tears that require protein to repair. protein shakes, often based on whey (whey protein), are particularly popular because they are quickly absorbed by the body, providing the amino acids needed for muscle repair without delay.

BCAAs (branched chain amino acids), which include leucine, isoleucine and valine, are particularly beneficial for endurance athletes. Michael Gundill in his book “Food supplements for athletes” (which I invite you to read) explains that BCAAs can help reduce muscle breakdown during exercise and decrease fatigue by inhibiting the production of serotonin in the brain. Regular intake of BCAAs can also improve recovery and performance by providing essential building blocks for muscles.

• Carbohydrates and energy drinks

Carbohydrates are the primary source of energy for endurance efforts. During exercise, the body uses glycogen stores stored in the muscles and liver. Adequate carbohydrate consumption before, during, and after exercise is crucial to maintaining high energy levels and avoiding fatigue. Energy gels, bars, and drinks are convenient ways to provide readily available carbohydrates.

Energy drinks not only provide carbohydrates, but also essential electrolytes like sodium, potassium and magnesium, which are lost through sweat. Michael Gundill points out that maintaining an adequate electrolyte balance is vital for preventing cramps, maintaining muscle function and optimizing hydration.

• Supplements for endurance and performance

Beta-alanine is an amino acid that helps increase carnosine levels in muscles. Carnosine plays a key role in reducing muscle acidity during intense exercise, which can delay the onset of fatigue. Michael Gundill mentions that beta-alanine is particularly effective for high-intensity and prolonged efforts, helping athletes maintain their performance for longer.

Caffeine is well known for its stimulant effects. It improves alertness, reduces the perception of exertion, and can increase the mobilization of fat as an energy source, thus sparing glycogen stores. Caffeine can be consumed in the form of capsules, gels, or drinks, but it is important to use it strategically to avoid side effects such as anxiety or sleep disturbances. Caffeine is often used during ultra trail or ultra cycling events to stay awake if you spend a night outside. Do not exceed 100mg of caffeine to avoid adverse effects.

Nitrates, often found in beet juice, improve mitochondrial efficiency and increase nitric oxide production, which may improve blood flow and oxygen delivery to muscles. Nitrates may increase endurance and improve performance in sports requiring prolonged exertion.

III. Supplements for recovery and general health

For endurance athletes, recovery and overall health are just as important as performance during training and competition. Here is a list of essential supplements that can help optimize recovery and maintain good overall health.

       1)   Antioxidants and anti-inflammatories

Vitamin C

• Role: Vitamin C is a powerful antioxidant that helps protect cells from oxidative damage caused by intense exercise. It also plays a key role in collagen synthesis, which is essential for tissue repair and joint health.
• Food sources: Citrus fruits (oranges, grapefruit), strawberries, kiwis, peppers, broccoli.

Vitamin E

• Role: Vitamin E protects cells from damage by free radicals produced during exercise. It also contributes to immune function.
• Food sources: Vegetable oils (sunflower oil, olive oil), nuts and seeds, avocados, spinach.

Curcumin

• Role: Extracted from turmeric, curcumin has natural anti-inflammatory properties. It helps reduce muscle and joint pain after intense exercise.
• Food sources: Turmeric (often consumed as a supplement due to its low dietary bioavailability).

       2)    Omega-3 fatty acids

Their role

• Omega-3 fatty acids, found primarily in fish oil, have anti-inflammatory properties that help reduce inflammation caused by intense exercise. They are also essential for cardiovascular health and can improve blood flow and lung function, which are critical for endurance athletes.

Food sources

• Oily fish (salmon, mackerel, sardines), flax seeds, walnuts, flax oil, canola oil.

       3)   Vitamins and minerals

Magnesium

• Role: Magnesium is crucial for muscle and nerve function, energy production, and protein synthesis. A deficiency can lead to muscle cramps, fatigue, and decreased performance.
• Food sources: Nuts and seeds (almonds, cashews, sunflower seeds), green vegetables, legumes, whole grains.

The iron

• Role: Iron is essential for the transport of oxygen in the blood and the production of energy. A deficiency can lead to anemia, reducing endurance capacity and increasing fatigue.
• Food sources: Red meat, poultry, fish, legumes, spinach, tofu.
• Be careful, iron overdose can be very harmful to you!

Zinc

• Role: Zinc plays a crucial role in immune function, cell repair and growth. A deficiency can affect recovery and increase the risk of infections.
• Food sources: Meat, seafood (oysters), legumes, seeds, nuts.

Vitamin D

• Role: Vitamin D is essential for calcium absorption and bone health. It also plays a role in immune function and reducing inflammation.
• Food sources: sun exposure (skin synthesis), oily fish (salmon, mackerel), fortified dairy products, eggs, mushrooms.

5) Proteins and amino acids for recovery

Proteins

• Role: Protein is necessary for muscle repair and growth, especially after intense workouts. Protein powders, such as whey, casein, or plant-based protein, provide a quick and effective source of protein.
• Food sources: Protein powders, meat, fish, eggs, dairy, legumes, tofu.

Branched chain amino acids also called BCAA

• Role: BCAAs (leucine, isoleucine, valine) are essential for reducing muscle breakdown during exercise and promoting protein synthesis. They can also help decrease mental fatigue.
• Food sources:           BCAA supplements, meat, dairy, legumes.

Supplements play a vital role in optimizing recovery and maintaining overall health for endurance athletes. By incorporating antioxidants, omega-3 fatty acids, essential vitamins and minerals, as well as protein and BCAAs, athletes can improve recovery, reduce inflammation, and support their immune system. These micronutrients are essential to support performance, recovery, and overall health in athletes. A balanced and varied diet rich in fruits, vegetables, lean proteins, whole grains, and healthy fats is usually sufficient to provide these nutrients. However, in some cases, supplements may be necessary to fill in the gaps, especially for athletes with increased needs due to their activity level. It is important to choose high-quality supplements and integrate them judiciously into a balanced nutritional routine to maximize their benefits. Consultation with a sports nutritionist or healthcare professional is recommended to assess specific needs and adjust supplementation accordingly.

IV. Tips for choosing and using food supplements

The need for nutritional supplements varies from one individual to another depending on several factors, including the type of sport, the intensity and duration of training, age, gender and general health. It is essential to do a personal assessment or with a health professional to determine potential deficiencies and specific needs. It is possible to have a blood test to see what deficiencies may need to be corrected instead of taking supplements blindly without knowing.

       1)   Choosing high-quality supplements

It is crucial to read product labels carefully to verify the list of ingredients and recommended doses. Choose dietary supplements from reputable and certified brands. Look for products that have been third-party tested to ensure their purity and effectiveness.

For omega 3 for example, you can look for or ask the manufacturer for the totox index. The Totox index is a measure of the oxidation of oils and fats, particularly used in the fish oil industry and vegetable oils used for their richness in omega 3. It allows you to evaluate the freshness and quality of the oils, a particularly important factor since their effectiveness depends on it.

The EPAX label: a guarantee of quality for fish oils

Source: https://www.bio-infos-sante.fr/label-epax-gage-de-qualite-huiles-de-poissons/

 

• Integrating supplements into a balanced diet

Complementing and not substituting is the basis of food supplements.

what is needed before you turn to supplements. They should be used to fill nutritional gaps, not to fill in a balanced diet. A diet rich in fruits, vegetables, lean proteins, whole grains, and healthy fats remains the foundation of good nutrition.

 

Also, be aware that the time of taking supplements can influence their effectiveness. For example, proteins are better absorbed when consumed after training, while certain minerals such as magnesium can be taken in the evening to promote muscle relaxation. Another example is taking iron, which should be done away from consuming caffeine, theine or foods rich in calcium. These can interfere with the assimilation of iron.

Also be careful of overdoses, especially for iron or vitamin C. This can be harmful to you! Symptoms include vomiting, vomiting blood, diarrhea, abdominal pain, irritability and drowsiness.

• Adapt supplementation to training phases

During periods of intensive preparation or competition, the need for supplements, proteins and electrolytes may increase. Adapt your supplementation accordingly to support effort and recovery.

During recovery or rest phases, adjust the amount of carbohydrates to help you recover and perform better.

 

Conclusion

In summary, dietary supplements offer significant benefits to endurance athletes by addressing specific nutritional needs and supporting optimal performance. They help fill gaps left by traditional diets, speed recovery, improve performance, and maintain overall good health. To maximize their benefits, it is essential to choose high-quality supplements and integrate them judiciously into a well-balanced nutritional routine.