Thursday, March 31, 2011

Energy

Before taking on the Phoenix Rock-n-Roll Marathon in January, I wrote an entry on nutrition where I outlined my initial strategy for staying hydrated and full of energy during the race. All in all I was pleased with the plan and never felt that I was approaching the energy wall during the race. However, as with any plan, there was always room for improvement and modification.

The first change that I made even before the January marathon was an elimination of the Sports Beans. As my preparatory long runs showed, the cane sugar from the Sports Beans just did not mix well with engineered sugars present within the Hammer Nutrition products that have become the centerpoint of my nutrition strategies.

The second modification came after I managed a face full of Perpetuem mix. I had mixed up an energy gel that was just to viscous for the spout valve on my FuelBelt squeeze bottles. As such, I've lightened up the mixture for each bottle in an effort to make it really easy to draw down during the run.


During the marathon, I only carried bottles of energy mix and relied upon the race staff to hand me cups of water along the way for hydration. For the 40for40, I'm taking a different approach. I will always keep one energy bottle and one hydration bottle in my FuelBelt. To keep myself flush with energy product and hydration, I've hired a motorcycle escort who will be ready with additional RaceBelt bottles as I need them. My goal will be one energy bottle per hour and as many hydration bottles as I need not to be thirsty.

The composition of the energy bottles is fairly simple. The first step is to put approximately 80 cc of Perpetuem powder in an 8-oz FuelBelt squeeze bottle. Perpetuem recommends 1-1/2 53cc-scoops per hour for someone in my weight class (approximately 72kg). Perpetuem is carbohydrate energy source with protein and fat and is engineered for longer duration events where the body might begin leaching muscle to make up the body's energy requirements. I tried several flavor varieties, but ultimately settled on Strawberry Vanilla. I've used it on at least two dozen runs so far and have never been unhappy to take a slurp. There are some varieties that include 25 or 50mg of caffeine per serving for those super-ultra distances, but I'm quite content to pass up the caffeine for this 40-miler.



On top of the Perpetuem powder, I drop in 6 each 0.625-cc scoops of Endurolytes. The Endurolytes are pure electrolytes and intended to counteract the loss of the same to perspiration. Hammer Nutrition recommends up to 6 scoops per hour during activities during high-heat, high-sweat activities, but as you'll see in my caloric analysis, I'll only be going through one of these bottles every hour and a half.  And with expectations of temperate weather of no more than 20 - 25 degree-C temperatures in Napa, I don't think I'll need to go to the limit. I'll be sure to have some additional capsules in my side pouch in the case that I get behind.

My plan is to give my motorcycle escort eight bottles with powder only. My escort will be able to mix the fluid during the run and hand me the energy bottles as needed. If all goes well, I'll only use six of the bottles during the event. The fluid to be mixed on top of the powder includes both gel and water. The gel is Hammer Gel. I use a little more than a double dose with 60 cc of vanilla flavored Hammer Gel. This gel is nearly pure carbohydrate with no simple sugars and no artificial sweeteners. On my 8-oz Fuel Belt bottle, this should bring me up to the 5-oz line.


From the 5-oz line up to the 8-oz line, is pure water. With approximately 1.5 servings of Perpetuem and about 2.2 servings of Hammer Gel, this energy bottle is will serve me up just about 400 calories, assuming a little bit of loss in the bottle.  Now the real challenge is - how many to drink and how often.  My first thought was to look at my training results and based on 40 miles, I can expect to burn somewhere between 4,000 and 6,000 calories during my run - so you might expect that I'd have to run through 10 or more of these energy flasks.  Well after some research, I found that this just wasn't true.

I looked through some of the excellent Hammer Nutrition articles and found some very detailed scientific information that answered my questions.  In the most informative article on the topic by the Hammer scientists, they propose that the body's ability to use the fuel is limited to between 4 and 4.6 calories per minute or about 250 calories per hour.  If I consume more than 250 calories per hour, that food is only going to move down the GI tract and when it gets below the absorption areas, I'm either stopping or extra weight will be riding in places where I'd rather not carry them.  So the question is - if I am going to finish in less than 6 hours and I only am going to take in 250 calories per hour, how can I sustain a drain of 4,000 to 6,000 calories with only 1,500 calories of intake.  The answer is fat storage.  According to Hammer, I have a reserve of 100,000 calories or more just waiting inside to come forth and go beyond the calories that I take in through my energy flasks.  The real key is to make sure those calories come from the fat stores and not from catabolized muscle tissue.  I protect against catabolism with a solid intake of protein and that is where the Perpetuem shines.

So in summary, I'm planning to run through one of my energy flasks every 90 minutes and should I really just feel compelled to fill my stomach for some reason, I'll bring along some handy dandy Hammer Bars.  But who knows what my stomach is going to want at Mile 35.  That's just part of the fun.
With my energy sources settled, the next question is hydration.  Out of everything I've read and experienced, the key thing on the H2O is definitely not to force it.  Drinking too much water can really be a problem, so I'm going to drink when I'm thirsty, sipping from a flask on my Fuel Belt.

As the days and weeks wear thin and I'm looking at only seven days to go, my mind has moved into the taper.  I'm running shorter distances, stretching for longer periods of time and trying to refine my diet for a few short days as I make my final preparations.  Currently, I'm focusing on Fish and Chicken for my protein intake sources outside of my normal training aids.  And for carbohydrates, I'm working more and more Sweet Potatoes and Oatmeal into the diet on a percentage basis as the race approaches.  I've dropped nearly all spices and I'm really trying to avoid citrus juices or any other acidic fluids or intakes

As for my fiber intake, I'm not doing as much as I would normally do, but when I do it, I'm focusing on insoluble fibers.  These insoluble fibers don't break down quite as easily in the GI tract as pointed out in a really great article on the Livestrong.com website.  Carrots, beets, and cauliflower all made sense to me as low gas but fibrous vegetables, but I was surprised to see brussel sprouts and cabbage on the list of veggies that are high in the insoluble fibers.  Bananas and avocados also rate well on the scale as do whole wheat products and long grain brown rice.  I've actually enjoyed the challenge of finding ways to make my carbo loading diet taste good and look appealing.  And while I can't seem to get my co-workers interested in my sweet potato oatmeal for breakfast and lunch, I'm convinced that it will be a pre-race week staple for years to come.

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1 comment:

  1. Very interesting reading. As usual, you did your homework. Sounds like you're headed for a 4.0 Well, I guess you'll have to remove the "point" to be totally accurate.
    Love,
    Mom

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