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Importance of Diet and Nutrition in Sports


In today’s world of elite sports, nutrition has emerged as a crucial factor that can significantly impact an athlete’s performance. It’s no surprise that we frequently come across stories highlighting athletes’ dietary practices. From LeBron James‘ strict ketogenic diet for weight loss to Michael Phelps’ legendary consumption of 10,000 calories a day during his 2008 Olympics campaign, the perfect diet plan varies depending on the sport, desired objectives, and individual preferences of the athlete.

sports nutrition

Whether you’re a professional athlete striving for victory, a weekend sports enthusiast, or a committed individual engaged in daily exercise, the key to good performance lies in embracing a healthy diet that fulfills your nutritional needs

So the question arises, what exactly is the role of nutrition in the sport performance? While a balanced diet offers various health benefits, when it comes to sports performance, there are three primary objectives that a good nutrition plan must achieve:

Importance of Balanced Nutrition:

Ensuring adequate energy levels

It is way more than simply meeting caloric needs. The composition of those calories, including micronutrient, macronutrients, meal frequency and timing, hydration, and even supplementation. All these play vital roles in crafting an optimal diet plan for athletes.

Facilitates Recovery

A balanced nutrition plan facilitates effective recovery post-training or competition. Intense physical exertion depletes muscle glycogen (energy stores) and causes damage to muscle proteins. Consuming a meal or snack promptly after, or even during, the training session or competition helps replenish glycogen stores, preventing muscle breakdown and accelerating the recovery process.

Maintains optimal body composition and weight 

Achieving and maintaining an optimal body weight and composition is crucial for athletes to maximize their performance. It is also equally important to have a diet plan that can be sustained in the long term.

balanced diet

Components of Good Nutrition Plan:


It serve as the primary source of energy for physical activity. It is recommended that carbohydrates should contribute to 55% to 70% of an athlete’s total energy intake. The carbohydrates are the primary source of glucose in the body. Glucose is converted into glycogen and stored in the liver and muscle tissues. The stored glycogen is used to fuel athletes during intensive workouts/physical activity.


Protein is crucial macronutrient in the diet as it holds a significant role in the recovery and repair of muscles after exercise. For strength and endurance athletes, it is ideal to consume 1.5 to 2 grams of protein per kilogram of body weight per day.


While carbohydrates and protein are often regarded as the key macronutrients for athletes, the role of fats in the diet should not be overlooked. Fats are essential for hormonal production, aid in the absorption of fat-soluble vitamins, and contribute to the structure of joints and cell membranes.

The recommended daily intake of fats is generally around 20-35% of total calorie intake. However, the type of fat consumed is crucial to consider.

Monounsaturated and polyunsaturated fats should be prioritized while saturated fats should be <10% of the total caloric intake. However, trans fats, should be avoided. As carbohydrates and protein take the spotlight, fats also play a significant role in a balanced diet for athletes. It is important to focus on consuming healthy fats while limiting or avoiding unhealthy sources to support optimal health and performance.

sports nutrition pyramid

Eating Pattern for Athletes:

Pre Training / Competition

Many athletes adopt carbohydrate loading before a competition to maximize glycogen stores, particularly in endurance sports. Research published in the Journal of Sports Medicine suggests that pre-competition carb-loading offers benefits such as delayed onset of fatigue by up to 20% and improved performance by up to 3%.

Some studies propose that pre-event carbohydrates should have a low Glycemic Index. This enables a more sustained release of energy during physical activity, leading to enhanced endurance and reduced fatigue.

During Training / Competition

It’s not uncommon to see athletes consuming small snacks during halftime, energy bars, or using carbohydrate-rich foods during a game. These practices aim to refuel energy levels, replenish glycogen stores, and prevent the risk of hypoglycemia (low blood sugar).

Post Training / Competition

Consuming food after an intense training session is crucial to restore glycogen stores and support recovery. Ideally, consume carbohydrates and fluids within the first one to two hours after exercise then a combination of carbohydrates with moderate to high Glycemic Index and protein is recommended.


There are general guidelines for optimizing sports performance through proper nutrition, but it’s important to know that there is no one-size-fits-all approach. Nutrition and dietary recommendations should be tailored and adjusted according to the specific needs and preferences of individual athletes.

Fariha Batool
Fariha Batoolhttps://sportsmen.pk
Dr. Fariha Batool is a certified dietitian with 3 years of experience. Her mission is to re-shape the nutritional habits and behaviors of our next generation to optimize their long-term health and reduce the likelihood of obesity, cancer and chronic diseases.


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