Fats in Sports Nutrition for Cyclists

Importance of Fats for Cyclists

Fats are an essential macronutrient for cyclists and play a central role in energy supply, especially during long endurance loads. While carbohydrates are primarily used during high-intensity loads, fats are preferentially metabolized at moderate intensities.

Main Functions of Fats

Fats fulfill several important functions in the body of cyclists:

Energy Production

During long rides in the base training zone, fats provide up to 70% of the required energy. One gram of fat provides 9 calories - more than twice as much as carbohydrates or proteins. This high energy density makes fats an efficient fuel for multi-hour loads.

Hormone Production

Fats are the starting material for the production of important hormones such as testosterone and growth hormones, which are crucial for regeneration and muscle building. Too low a fat content in the diet can lead to hormonal disorders.

Vitamin Absorption

The fat-soluble vitamins A, D, E and K can only be absorbed in combination with fats. These vitamins are important for immune function, bone metabolism and antioxidant protection.

Cell Membrane Structure

Fats are a component of every cell membrane in the body and influence their flexibility and permeability. This is particularly important for the function of muscle and nerve cells.

Types of Fats

Not all fats are the same. For cyclists, distinguishing between different types of fats is crucial for optimal performance and health.

Saturated Fatty Acids

Saturated fatty acids are mainly found in animal products such as meat, butter, cheese and cream. They are chemically stable and solid at room temperature.

Properties:

• Energy-dense and stable
• Increase cholesterol levels with excessive consumption
• Should make up a maximum of 10% of total calorie intake
• Important in moderation for hormone production

Sources of Saturated Fats:

• Red meat
• Full-fat dairy products
• Coconut oil
• Palm oil
• Butter

Unsaturated Fatty Acids

Unsaturated fatty acids should make up the main proportion of fat intake in cyclists. They are divided into monounsaturated and polyunsaturated fatty acids.

Monounsaturated Fatty Acids (MUFA):

• Lower LDL cholesterol
• Improve insulin sensitivity
• Anti-inflammatory effect
• Main sources: Olive oil, avocados, nuts

Polyunsaturated Fatty Acids (PUFA):

• Essential (cannot be produced by the body itself)
• Important for cell membrane function
• Include Omega-3 and Omega-6 fatty acids
• Main sources: Fatty fish, flax seeds, walnuts, chia seeds

Omega-3 Fatty Acids

Omega-3 fatty acids deserve special attention in the diet of cyclists due to their diverse positive effects:

Anti-inflammatory:

Intensive training loads lead to microscopic inflammation in the muscles. Omega-3 fatty acids, especially EPA and DHA, have anti-inflammatory effects and support regeneration.

Improvement of Aerobic Capacity:

Studies show that adequate Omega-3 intake can improve oxygen uptake and utilization in muscles.

Heart Health:

Omega-3 fatty acids lower triglycerides, improve vascular function and can reduce the risk of cardiac arrhythmias.

Optimal Dosage:

• At least 2-3g EPA and DHA daily
• Up to 4-5g during intensive training
• Ideally from fatty fish (salmon, mackerel, herring)
• Alternatively high-quality fish oil capsules or algae oil (vegan)

Fat Requirements and Optimal Fat Intake

The fat requirement of cyclists varies depending on training phase, intensity and individual goals. Generally, the fat content should be between 20-35% of total calorie intake.

Calculation of Individual Fat Requirements

Basic Formula:

For a cyclist with 3,500 kcal daily requirement and a target of 25% fat content:

• 3,500 kcal × 0.25 = 875 kcal from fat
• 875 kcal ÷ 9 kcal/g = 97g fat per day

Adjustment According to Training Phase:

1. Base Phase (Low Intensity):

• Higher fat content (30-35%)
• Trains fat metabolism
• Spares glycogen stores

2. Intensity Phase:

• Moderate fat content (20-25%)
• More carbohydrates for intensive units
• Focus on rapid energy provision

3. Competition Phase:

• Lower fat content (20-25%)
• Maximization of carbohydrate stores
• Easy digestibility before races

Distribution Throughout the Day

The timing of fat intake is crucial for optimal performance and regeneration.

Morning:

• Moderate fat amount (15-20g)
• Focus on high-quality fats (nuts, avocado, seeds)
• Combined with carbohydrates and proteins

Lunch:

• Main meal with higher fat content (25-35g)
• Healthy oils in salads
• Fatty fish or nuts

Evening:

• Moderate to higher fat amount (30-40g)
• Supports regeneration overnight
• No impairment of next training

Before Training:

• At least 3-4 hours before
• Only moderate fat amounts
• Prefer easily digestible fats

After Training:

• Initially focus on carbohydrates and proteins
• Fats in later meals for satiety

Optimal Fat Sources for Cyclists

The quality of fat sources is at least as important as the quantity. Here are the best fat sources for cyclists:

Top Fat Sources

Fatty Fish:

• Salmon (13g fat per 100g, rich in Omega-3)
• Mackerel (16g fat per 100g, highest Omega-3 content)
• Sardines (11g fat per 100g, also rich in calcium)
• Herring (18g fat per 100g)

Nuts and Seeds:

• Walnuts (65g fat per 100g, best plant-based Omega-3 source)
• Almonds (50g fat per 100g, rich in vitamin E)
• Chia seeds (31g fat per 100g, high Omega-3 content)
• Flax seeds (42g fat per 100g, alpha-linolenic acid)

High-Quality Oils:

• Extra virgin olive oil (100g fat per 100ml, MUFA-rich)
• Rapeseed oil (favorable Omega-6:Omega-3 ratio)
• Linseed oil (highest plant-based Omega-3 content)
• Walnut oil (balanced fatty acid profile)

Additional Sources:

• Avocados (15g fat per 100g, rich in MUFA)
• Dark chocolate (>70% cocoa, 30-40g fat per 100g)
• Eggs (5g fat per egg, complete with all nutrients)
• Full-fat Greek yogurt (10g fat per 100g)

Checklist: Daily Fat Sources

• 1-2 portions of fatty fish per week (or daily fish oil/algae oil)
• Daily 1 handful of nuts (approx. 30g)
• 2-3 tbsp high-quality oils for salads and cooking
• 1/2 to 1 avocado daily
• 2-3 eggs per day
• 1-2 tbsp nut butter (almond, peanut or cashew butter)
• 1-2 tbsp seeds (chia, flax seeds, hemp seeds) in smoothies or muesli

Fats in Training Context

The strategic use of fats can significantly influence training adaptations and performance of cyclists.

Fat Metabolism Training

Training fat metabolism is particularly important for long-distance riders and ultra-cycling athletes.

Principle:

Through targeted training at low intensity in a fasted or carbohydrate-reduced state, the body is trained to use fats more efficiently as an energy source.

Methodology:

1. Fasted Training:

• Light ride (GA1 zone) before breakfast
• Duration: 60-90 minutes
• No carbohydrate intake during the session
• Maximum 1-2x per week

2. Low-Carb Training:

• Training with reduced carbohydrate intake the day before
• Moderate intensity (lower GA2 zone)
• Duration: 2-4 hours
• Only in base phase

3. Train-Low-Compete-High:

• Training with low carbohydrate stores
• Competitions with filled stores
• Improves metabolic flexibility

Advantages:

• Increased fat oxidation rate
• Extended endurance performance
• Spares glycogen stores in races
• Increased mitochondrial density

Fats During Long Rides

During rides over 3-4 hours, moderate fat amounts can support endurance performance.

Practical Implementation:

• Nuts as snack (in moderation, 20-30g per hour after the 2nd hour)
• Nut butter on whole grain bread or rice cakes
• MCT oil in energy gels (faster available fats)
• Low-fat energy bars with some nut content

Important:

Primarily, carbohydrates remain the main energy source during intensive loads. Fats complement and extend endurance, but do not replace carbohydrate intake.

Fats and Regeneration

Fats play an important role in regeneration after hard training sessions.

Inflammation Modulation

After intensive loads, micro-injuries and inflammatory processes occur in the muscles.

Omega-3 Fatty Acids for Regeneration:

• Reduce muscle soreness (DOMS)
• Accelerate repair processes
• Lower systemic inflammatory markers
• Optimal dosage: 3-4g EPA+DHA daily

Optimal Omega-6:Omega-3 Ratio:

• Ideal: 2:1 to maximum 4:1
• Modern diet often 15:1 to 20:1
• Too much Omega-6 is pro-inflammatory
• Reduction of Omega-6-rich vegetable oils recommended

Hormonal Regeneration

Fats are essential for the production of regeneration hormones.

Testosterone Production:

• At least 0.8-1g fat per kg body weight
• Especially saturated and monounsaturated fats important
• Cholesterol as starting substance

Cortisol Regulation:

• Balanced fat intake helps with stress regulation
• Too low fat content can increase cortisol
• Chronically elevated cortisol inhibits regeneration

Common Mistakes in Fat Intake

Many cyclists make typical mistakes in fat intake that can impair performance and health.

Too Low Fat Intake

Problem:

Some athletes drastically reduce fats to be able to consume more carbohydrates or to lose weight.

Consequences:

• Hormonal disorders
• Reduced fat-soluble vitamin absorption
• Impaired immune function
• Chronic fatigue
• Increased injury risk

Minimum Limit:

Never below 0.8g fat per kg body weight (e.g. 56g at 70kg)

Wrong Fat Sources

Problem:

Too many saturated fats, trans fats or unbalanced Omega-6:Omega-3 ratio.

Solution:

• Completely avoid trans fats (fried products, industrial baked goods)
• Saturated fats under 10% of calories
• Eat Omega-3 rich (fish, flax seeds, walnuts)
• Use high-quality oils (olive oil, rapeseed oil)

Wrong Timing

Problem:

High-fat meals shortly before intensive training or races.

Consequences:

• Gastrointestinal complaints
• Reduced performance
• Nausea and feeling of fullness

Solution:

• Last high-fat meal 3-4 hours before load
• Directly before and during training only minimal fat
• After training initially carbohydrates and proteins, later fats

Special Nutrition Strategies

Various nutritional approaches use fats differently for performance optimization.

Ketogenic Diet

The ketogenic diet is an extreme approach with very high fat content (70-80%) and minimal carbohydrate content (<50g daily).

Principle:

The body switches to a state of ketosis, in which fats and ketones become primary energy sources.

Potential Advantages for Ultra-Cycling:

• Maximized fat oxidation rate
• Independence from carbohydrate intake
• Stable energy supply over very long distances

Disadvantages for Most Cyclists:

• Drastically reduced high-intensity capacity
• Long adaptation phase (4-8 weeks)
• Social restrictions
• Not compatible with interval training and races

Conclusion:

Ketogenic diet is only useful for a few special cases (24h+ ultra-cycling). Not recommended for normal cyclists with interval training and competitions.

Periodized Fat Intake

A flexible approach adapts fat intake to training phase and goal.

Base Phase:

• Higher fat content (30-35%)
• Much training in GA1 zone
• Training fat metabolism

Build Phase:

• Moderate fat content (25-30%)
• Balance between base and intensity

Competition Phase:

• Lower fat content (20-25%)
• Maximization of carbohydrate availability
• Optimization for high-intensity loads

Practical Implementation

Example Daily Plan (3,500 kcal, 25% Fat = 97g)

Breakfast (20g Fat):

• 80g oatmeal with 200ml whole milk
• 1 tbsp flax seeds, 1 tbsp chia seeds
• 1 banana
• 15g walnuts

Pre-Training Snack (5g Fat):

• 2 rice cakes with 1 tsp almond butter
• 1 apple

Training:

• Only carbohydrates (gels, bars)
• No fats during intensive load

Lunch (30g Fat):

• 150g salmon fillet
• 300g sweet potatoes
• Colorful salad with 2 tbsp olive oil
• 1 avocado (half)

Afternoon Snack (10g Fat):

• 30g mixed nuts
• 1 piece of fruit

Dinner (25g Fat):

• 200g chicken breast
• 100g whole grain rice
• Vegetable pan with 1 tbsp rapeseed oil
• 150g Greek yogurt (2% fat)

Before Sleep (7g Fat):

• 1 glass almond milk
• 5 Brazil nuts (selenium for regeneration)

Weekly Planning Fat Sources

• Monday: Salmon (Omega-3)
• Tuesday: Chicken + Avocado + Olive Oil
• Wednesday: Mackerel (Omega-3)
• Thursday: Eggs + Nuts + Rapeseed Oil
• Friday: Sardines (Omega-3)
• Saturday: Beef Steak + Mixed Nuts
• Sunday: Herring (Omega-3)

Daily Additionally:

• 30g mixed nuts
• 2-3 tbsp high-quality oils
• 1-2 tbsp seeds (chia, flax seeds)

Supplementation

In certain cases, supplementation of fats can be useful.

Omega-3 Capsules

When Useful:

• No regular fish consumption
• Vegetarian/vegan diet
• Increased need due to intensive training
• Inflammatory complaints

Dosage:

• 2-4g EPA+DHA daily
• Pay attention to purity (free from heavy metals)
• Take with meal for better absorption

Vegan Alternative:

• Algae oil (direct source of EPA and DHA)
• Same dosage as fish oil
• Sustainable and without risk of pollutants

MCT Oil

MCT (Medium Chain Triglycerides) are medium-chain fatty acids that are metabolized faster.

Properties:

• Faster available than normal fats
• Can be digested without bile acids
• Potentially energy during long loads

Application:

• 10-30g in coffee, shakes or homemade gels
• Gradually introduce (gastrointestinal tolerance)
• Not beneficial for every athlete

Critical Assessment:

Studies show mixed results. MCT oil can offer a small advantage during very long loads (>4 hours), but is not a miracle cure.

Monitoring and Adjustment

Optimal fat intake is individual and should be regularly reviewed.

Signs of Too Low Fat Intake

• Chronic fatigue despite sufficient sleep
• Frequent infections
• Hormonal disorders (in women: absence of period)
• Dry skin and hair
• Poor regeneration
• Performance decline despite good training structure

Signs of Too High Fat Intake

• Difficulties consuming sufficient carbohydrates
• Digestive problems
• Reduced performance in high-intensity units
• Weight gain despite training

Adjustment Strategies

Step 1: Tracking

• 7 days detailed nutrition diary
• Calculation of average fat content
• Recording of performance and well-being

Step 2: Assessment

• Is fat content in target range (20-35%)?
• Is the quality of fat sources correct?
• Does timing match training load?

Step 3: Optimization

• Gradual adjustments (±5g per day)
• At least 2-3 weeks for assessment
• Focus on performance and regeneration