The Right Fuel for Optimal Athletic Performance

My HistoryRan Track in HS but had BAD allergiesExercise Induced AsthmaHeart MurmerFood Allergies

Healthy Diet is Supposed to Be…?

Low FatWhole GrainsOlive OilSome Meat and FishFresh Veggies and FruitBUT…

Gluten, Soy and Corn Issues

I, and a lot of other people have issues with grainsGluten Allergy/SensitivityCorn AllergyDairy AllergySoy ProblemsWhich Led to…

My Diet NowPaleo or Primal Diet, Lower CarbsNo Processed FoodsNo GrainsNo DairyNo SoyFew LegumesLow Sugar

Voila! Allergies and Asthma Greatly DiminishedBrain Fog/Lethargy Went AwayEnergy and Endurance Went WAY Up! Joint Aches Went AwayMuscle Soreness and Achiness DownLess Burning During RidingLess Blood Sugar Highs and LowsNO BONKING

I, of course, wanted to research this…

The Athletic Performance Fueling Question

Typical Riding/Race Fuel is Often: Carb Load with Refined White Flour, Grains and Sugar, i.e. Pancakes, Pasta, Pizza, Cookies, etc.

Fuel During a Race/Ride is Often Sugary Substances Like Gu, Shot Blocks, “Energy” Bars, Candy Bars, Gatorade, and other Energy Drinks

What Happens to All This Stuff In Your Body?

Carbs for FuelCarbs Converted Into Glycogen in Liver and

Stored in Liver and Some in MusclesUsed for Short, Intense Bursts of Energy

PrimarilyThe Rest is Stored in the Body As Fat, Which Also

Raises Triglycerides and LDL (BAD) CholesterolBlood Sugar Ups and Downs

Glycogen Has Limited Storage, so Most of it is Burned Through in About 20-40 Minutes.

Then What Happens? Well, Typically Your Body Is Supposed to Start

Burning FatWhat Happens Though When Your Body is Lazy

From Easy Access to Glucose From Sugary, Starchy Snacks….?

When You Burn Through it…

You May BONK! Fatigue Soreness Lactic Acid Buildup Excess Inflammation

But Aren’t We Supposed to Burn Fat for Energy?

Two Fuel Systems

Glucose/Glycogen System-For Short Intense Efforts-Easily Accessible-Lasting Anywhere from 20-40 Minutes-Think Sprint Intervals

Fat Burning SystemFor Longer, Sub-maximal EffortsLasting from 40 Minutes and BeyondHas to Be Broken Down, Metabolized If Not Frequently Utilized, Body is Not as Efficient

in Using This Energy Source

What’s the Problem? The Problem is When You Over-Utilize One Fuel

System, the Metabolic Pathway Becomes Fast And Easy

And the Under-Utilized System Becomes Slow and Difficult to Access

Is Sugar Evil? Most fructose that we eat, whether it is from

table sugar (sucrose), or high fructose corn syrup, or fruit juices gets made into fat instantly in the liver.

Our bodies cannot convert fructose to glucose (the usable source of suger in the body), so fructose is sent to the liver to be turned into fat.

Twisted LogicMost energy and sports drinks use sucrose or

high fructose corn syrup as the primary sweetener.

Given that the average exhausted athlete still has TENS of THOUSANDS of fat calories in their body’s energy reserves, but is running out of glycogen (from carbs), why would you add a sugar that cannot be burned for energy,

And will be stored as FAT?

Carb Loading TheoryThe Beloved Mainstay of Sports Nutrition is the

Carb Loading Theory for High Intensity Performance.

From two Danish Scientists in 1939 who gave athletes either a diet that was high fat, high carb or mixed for 7 days.

Then they rode bicycles to exhaustion. The finding—the more carbs the longer they could pedal.

This was followed by a study that showed muscles held more glycogen with carb loading diets.

One CaveatThe diets used were from 4-10 days long. However, Scandinavian explorers in the Arctic

spent years traveling through the Arctic consuming a diet of mostly FAT.

The key is that it takes between two to three weeks to adapt to the higher fat diet.

Then endurance IMPROVED.

Another Study Fats Vs. Carbs

In another study, subjects were given low calorie diets forcing their bodies to utilize stored fats.

They were tested on a treadmill before the diet, after one week and after six weeks.

Average times on the treadmill were: 168 min before the diet, 130 min one week into the diet, and 269 min after 6 weeks.

AND both the pulse rate and O2 consumption showed they were working LESS hard on the last test!

One More Test5 lean bicycle racers who were highly trainedFed a mod protein and HIGH fat dietAfter four weeks on this high fat diet, their peak

aerobic power was unchanged and duration at the same power output was the same.

The big change was muscle glycogen. On the test at the four week point, the riders had HALF as much glycogen in their muscles and used only a QUARTER as much glycogen in their exercise!

What Does This Mean? Given the proper time to adapt, the body

actually gains more endurance from a high fat/lower carb diet, AND

The body actually uses LESS muscle glycogen. So there really isn’t a big connection between

muscle glycogen and work performance in this case.

Another approach to having “extra” glycogen – train your body to use less

The alternative to maximizing the availability of CHO is to conserve CHO by maximizing the capacity to oxidize fat. The essential theory underlying this strategy is the reciprocal relationship between FAT and CHO in terms of providing energy for exercise.

TCA (Krebs) cycle

GlycogenGlucose

Pyruvate Acetyl-CoA

TriglycerideFree Fatty Acid

Fatty Acyl CoA

ATP Fuel for Muscles Fat exponentially increases the production of a molecule known as

ATP. ATP is the master energy and strength producing molecule within the body. The more you have, the better you perform. A single fat molecule can produce a whopping 129 molecules of ATP !!

In contrast, if you are not consuming enough healthy fat the body is forced to utilize an inferior source of ATP production - carbohydrates.

A single carbohydrate molecule produces a paltry 38 molecules of ATP!

Do the math – fat yields more than three times the energy as a carbohydrate!

High Fat vs. High CHOEn

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Perfo

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Baseline 2 weeks 7 weeks

p.144CHOFAT

What Does Your Body Prefer to Burn?

At rest all skeletal muscle prefers fat for fuel, using glucose only when insulin levels are high and blood sugar needs someplace to go.

During sustained exercise, fat is still the preferred fuel at intensities up to 60% of max effort.

Above 60% glucose is preferred, although this is less preferred if adapted to a low carb diet.

Glucose is broken down into lactate and released back into the bloodstream after it is metabolized.

What About Sprinting? Performance in high-intensity exercise like sprinting depends

mainly on two factors that are significantly affected by diet: oxygen and fuel. 

Obviously on a lower carb diet, the primary fuel will be fat rather than glucose.

Fat wins over glucose because of its energy density - it yields more ATP than glucose. 

Since it's more energy-efficient, it's more oxygen-efficient, because more energy is produced per unit of oxygen.

So Fat Wins, but it’s Harder to Access… 

What About Lactic Acid?Other studies have shown that athletes also

produce much less lactic acid during exercise as well, or it is utilized better.

What is noticeable is that there is much less muscle soreness and burning from this type of diet, whether it creates less lactic acid, or more likely,

Less INFLAMMATION which makes the muscles not as sore and speeds recovery.

And One More Thing…A lower carb diet—Reduces levels of small, dense LDL (the worst

kind of ‘bad cholesterol) Raises HDL cholesterol (the good cholesterol),

and that biomarkers of inflammation are reduced by a well-formulated low carbohydrate diet.”

And Triglycerides are also greatly reduced.  

Lower Carb + Higher Fats

Explorers Used This Diet to Explore the ArcticDiet consisted of a Little Protein and Mostly Fat= ENDURANCE

Key to Adaptation

It Takes the Body 3-4 Weeks to Adapt to This Fat Burning Process and to Build Up an Accessible Fat Burning Metabolic Pathway

FAT!!!!????? Add

Fats are essential for our body to function properly,

Let’s Talk About Fats All Fats are not the same! Some of the fats we’ve

been told are healthy are NOT healthy!

Some fats are high in Omega 3 fatty acids and some are high in Omega 6 fatty acids.

We get far too much Omega 6 fatty acids in our diets

What’s Wrong With Vegetable Oil?

An overabundance of Omega 6 fats compared to our intake of Omega 3 fats creates inflammation in the body.

Omega 6 fats come from vegetable oils, vegetable oils from grains (corn oil) and seeds (canola oil).

Olive oil is high in Omega 6 oils, but it has many other beneficial properties.

Some Saturated Fats Are Actually Very Good for You Coconut Oil—This Medium Chain

Triglyceride is Immediately Metabolized and Usable for Energy

Grass Fed REAL Butter Which Contains Tons of Vitamins, Minerals and Nutrients You Cannot Get Anywhere Else

Fats from Grass Fed Beef (grain fed is high in Omega 6 fats), Whole Eggs, Avocados, Nuts, Grass Fed Cheese, etc.

Fat is good...Fats are important for many metabolic processes:

Energy production Transporters of fat soluble vitaminsImportant in the synthesis of Vitamin D,

cholesterol, and steroid hormones.Structurally important in cell membranes

Fat can be classified by its structure:Unsaturated: contain double bonds between

carbonsSaturated: single bonds between carbons

Too little fat...<10%Risk of becoming deficient in essential fatty

acids and fat soluble vitamins.Could affect fat mobilization and oxidation,

important in energy productionLower circulating levels of hormones

(insulin, testosterone...important ones if you want to build lean body mass)

Higher Inflammation, Longer Recovery Times

The Downside of FatFat is slow to digest and be converted into a

usable form of energy (it can take up to 6 hours).

Converting stored body fat into energy takes time. The body needs to breakdown fat and transport it to the working muscles before it can be used as energy.

Converting stored body fat into energy takes a great deal of oxygen, so exercise intensity must decrease for this process to occur.

So Burning Fat for Energy for Longer Efforts Will Bring

Increased EnduranceYour Body Will Become More Efficient at Burning

Fat--Both Dietary and Body FatDecreased Lactic AcidYou Burn Less Glycogen, so Glycogen is Spared

in the MusclesYour Energy Stays More Stable

Because Riding or Racing Demands We Have Full

Tanks I like to LAYER on my fuel. Start with healthy fats for a base, plus healthy

proteinsAdd in a good supply of non-grain carbohydrates such

as sweet potatoes, quinoa, brown rice, white potatoes and other starchy vegetables.

Don’t forget a big serving of vegetables, which are also a healhy complex carbohydrate.

PRE Race and POST Race

And don’t forget protein and complex carbs within an hour after a long ride or race.

Use REAL food as opposed to concoctions and powders and mixes. My favorite quick post race/training ride for protein is grass fed natural beef jerky, if you cannot sit down and have a good meal.

Be generous with salt. Most of us athletes, especially if you eat lower carbs, need SALT. This helps with reduction of cramps and heat tolerance as well.

Drink plenty of water!

Other Stuff

You’ll have the energy needed to get through a race or a ride and

have enough for the finish!

SummaryFueling ONLY with Sugar, Grains and Energy

Drinks, Gels, Chews, Candy Bars, Energy Bars means your body only uses the most accessible energy system, but

It Also Means you Burn through it Faster.Raises Blood Sugar (which falls later)Stores Body FatGenerally Don’t Easily Access Stored Fat for

Energy

SummaryFat in an athlete’s diet will NOT make you fat, it

actually helps your body learn to access it’s own fat stores more efficiently

It prevents bonkingIt provides a long lasting energy sourceIt improves enduranceIt helps reduce inflammation, and speeds

recovery time

ConclusionI do not know everything there is to know about

this. This is an ongoing science. I have experimented with diet ad ways to fuel

my body over the last four years I have been riding/racing, and I notice I feel much better, and race better on a lower carb, higher fat diet that includes some complex carbs right before racing.

While some principles of diet hold true for everyone, we are all individuals and there is NO cookie cutter approach that works.

We athletes are in some stage of recovery almost continuously during periods of heavy training. The key to optimum recovery is rest and diet.

While I believe that a primitive/Paleo style diet is best for health, I also know that athletes need to modify their diets to meet the high demands of training.

Listen to your body and give it what it needs. Most of all, eat REAL food.

ReferencesStephen Phinney MD, Phd, Jeff Volek, Phd,

RD, “The Art and Science of Low Carbohydrate Living: An Expert Guide to Making the Life-Saving Benefits of Carbohydrate Restriction Sustainable and Enjoyable

Lauren Cordain and Joe Friel, “Paleo for Athletes”

Shane Ellison, MS, The People’s Chemist