Sports nutrition is a vital component of an athlete’s performance and overall well-being. To learn more about the importance of nutrition in sports performance, we sat down with Dr. Ann Brown, Performance Nutrition Specialist and Director of the Human Performance Laboratory here at the University of Idaho.
In this blog post, we’ll explore her insights on how nutrition affects athletic performance, what makes up the ideal diet for athletes, and also break down a few common myths that still circulate in sports nutrition today.
Why is Sports Nutrition Important?
Proper nutrition plays a crucial role in an athlete’s performance, recovery, and overall health. Here are some key reasons why sports nutrition matters:
1. Optimal Energy Levels: The right balance of macronutrients (carbohydrates, proteins, fats) ensures athletes have enough energy for training and competition.
2. Enhanced Recovery: A well-planned athlete’s diet aids in muscle recovery, reducing the risk of injuries and improving overall performance during subsequent workouts.
3. Improved Endurance and Stamina: The right fuel can help increase endurance, enabling athletes to push their limits and perform at their best for extended periods.
4. Strength and Muscle Growth: Adequate intake of sports nutrition proteins supports muscle growth, strength, and repair, essential for athletes looking to enhance their athletic capabilities.
5. Maintaining a Healthy Weight: An effective diet for athletes helps maintain an optimal weight for their sport, promoting agility and speed.
For more foundational information on the importance of nutrition for athletes, you can explore resources from the National Strength and Conditioning Association and the American College of Sports Medicine.
Common Myths in Sports Nutrition
The more protein an athlete eats, the more muscle they’ll gain
There are many myths about sports nutrition proteins. Protein is important for athletes, especially in helping build muscle. However, research has shown that there is a ceiling to how much protein is useful for an athlete to consume in one single meal. This ceiling is around 25 to 30 grams of protein per sitting.
That means some protein supplements for athletes that contain 40 grams of protein are not actually providing any additional benefit to the athlete’s body.
“Athletes don’t need to eat a steak covered in protein powder,” Dr. Brown jokes. She suggests first meeting protein intake requirements with food, and supplement if needed to facilitate muscle mass growth with exercise training.
Additionally, the protein intake recommendations for the general population are too low for an athletic population. Athletes should aim for between 1.2 to 2.3 grams of protein per kilogram of body weight per day (g/kg/day).
Importantly, not all proteins are created equal. With few exceptions, plant-based proteins do not include all the essential amino acids. And even in plant foods that do contain all essential amino acids (such as soy, hemp, or quinoa), important essential amino acids like leucine are present in lower quantities than what is found in animal products.
Dr. Brown does not recommend a vegetarian or vegan diet for athletes unless they have health or other personal reasons for doing so. “There have been some health benefits documented for plant-based diets, but unclear evidence supporting performance benefits. Athletes can struggle to consume enough calories and protein on these diets.”
It is also important to time the athlete’s protein consumption. Recovery nutrition for athletes should focus on protein-rich foods. On the other hand, carbohydrates should be a more primary focus prior to exercise or a competition.
Carbohydrates are the enemy
Carbohydrates are a key fuel source and directly influence how nutrition affects athletic performance.
“This is a very common one in aesthetic sports, such as dance or even cross country,” says Dr. Brown. “We know that carbohydrates are a fuel source for high-intensity exercise. Sports nutrition for endurance athletes or high-intensity athletes needs to contain adequate carbohydrates to fuel that exercise.” If carbohydrates are too low, it will be challenging to maintain the intensity of exercise.
Sports drinks also fall into this category. While they contain sugar, they are formulated for athletes’ diet needs, especially when heavy training or competition increases energy and hydration demands.
However, these drinks are not for everyone, and should be looked at more as a supplement for athletes, not a food replacement. Dr. Brown concludes, “Would I recommend sports drinks to someone who was sedentary? No, I would not. But nutrition recommendations change for an athlete.”
Gluten-Free is healthy
“If an athlete has celiac disease or if they have a gluten intolerance, then certainly this is true.” Dr. Brown says. However, if an athlete does not have celiac disease or a gluten intolerance, whole-grain foods can support nutrition and athletic performance with fiber, carbohydrates, and protein.
She adds, “Many gluten-free products are low in protein and fiber. An athlete who is avoiding gluten must pay close attention to how that may be affecting the consumption of other nutrients.”
Cheat days are fine
“Athletes who are using cheat days likely need to re-examine their relationship with food,” says Dr. Brown. “I am a big believer in that all food is acceptable. There are no good foods or bad foods.”
Athletes using cheat days are usually those who regularly deny themselves certain foods. While that may have short-term gains, it can cause harm in the long term.
Understanding the importance of nutrition for athletes includes recognizing that all foods can fit in moderation, without labeling food as “good” or “bad.” “There is never a reason to deny a slice of birthday cake,” she says. “Just don’t eat the whole birthday cake by yourself.”
The Right Nutrition Shapes Stronger, Healthier Athletes
Nutrition to boost athletic performance and recovery has only recently come into the limelight, as the focus traditionally rested on strength and conditioning. Current research highlights the importance of nutrition in sports performance, helping athletes optimize energy, bounce back faster, strengthen their bodies, and understand why nutrition is important for athletes at every stage of training.
Here at the University of Idaho, our athletic training program recognizes that an athlete’s diet is an important part of wellness. We’re fortunate to have Performance Nutrition Specialists like Dr. Brown to help our students navigate the emerging science of performance nutrition, so they can support the overall well-being of their future patients.
If you’re interested in the science behind sport nutrition, athletic performance, and human physiology, our Athletic Training Program offers hands-on learning and mentorship to help you move forward.
Connect with our team to learn how the program prepares future professionals to support athlete health, performance, and overall well-being.
Frequently Asked Questions
Why is nutrition important for athletes?
Nutrition is essential for athletes because it fuels performance, supports recovery, and helps prevent injuries. The importance of nutrition for athletes lies in its ability to maintain energy, build strength, and keep the body functioning at its best during training and competition.
How does nutrition affect athletic performance?
Nutrition and athletic performance are directly connected. Without proper fuel, athletes experience fatigue, slower recovery, and poor results. A well-balanced athlete’s diet provides the energy and nutrients needed for strength, endurance, and quicker recovery between workouts or events.
What is the best diet plan for athletes?
The best diet for athletes includes a mix of carbohydrates, protein, healthy fats, and plenty of fluids. Meal timing is important as well. Pre-workout meals should focus on carbs, while post-workout meals should include protein for recovery and muscle repair. Whole foods are always preferred over supplements.
What are the 5 key importance of nutrition to athletes?
Sport nutrition supports five main areas: steady energy, muscle recovery, endurance, strength building, and healthy body composition. Together, these benefits help athletes handle training loads, avoid burnout, reduce injury risk, and maintain overall performance throughout a season or competitive year.
How much protein should an athlete consume daily?
Most athletes need around 1.2 to 2.3 grams of protein per kilogram of body weight per day, depending on their training volume and goals.
What foods enhance athletic performance naturally?
Whole foods like fruits, vegetables, lean meats, eggs, whole grains, and nuts support athletic performance enhancement. Carbohydrates provide quick energy, while proteins help with recovery. Hydrating foods like watermelon and leafy greens also help keep the body ready for high-level activity.