For me putting in the miles has always been easy, I love
putting in the work but I also love to eat so getting the weight down has
always been difficult. Most top marathoners range in the 130lb to 150lb
range and at my normal 175lbs I tend to carry a little extra weight around. At
best I have reduced to maybe 165lbs for a goal race and this time I would like
to go into my goal event in the range of 150lbs to 155lbs.
When looking at the Kenyans runners diet what comes as a
surprise is the amount of calories consumed. Given their activity levels, they
don’t eat very much, most Kenyans are in negative energy balance in
periods of intense training. Almost all Kenyans experience a significant
reduction in their BMI in periods leading up to a race.
The same is true of their fluid intake. Most runners don’t
drink anything before their 10-15 mile runs in the morning, and the majority of
Kenyans don’t re-hydrate during races. At first glance, these practices seem
sub-optimal. After all, the importance of carb-loading and being well hydrated
have been staples of western training regimens for years.
A re-consideration of the literature on the biomechanics of
running suggests these seemingly counter-productive habits actually provide a benefit to Kenyan runners. Because their diet is high in carbohydrates, the
majority of Kenyans metabolized extra fat during periods of negative energy
balance, which reduces their BMI without significantly affecting their glycogen
stores or oxidative capacity. This effect is enhanced by the fact that Kenyans
typically eat right after their workout, negating the glycogen depleting effect
of negative energy balance. At race time the reduced body mass lowers the
energy cost of locomotion without affecting maximal energy producing capacity.
So in addition to running two to three times a day I will
attempt to maintain a negative energy balance and see if I can reduce the
weight, so far I have gone from 175 to 165lbs without too much difficultly.
Interestingly I have found with the increased aerobic work and decreased
strength work I naturally seem to be eating considerably more carbohydrates.
Nothing overly complicated, "light" bump in milage, "light" cut to calories which will lead to a negative energy balance, which will lead to a slow decrease in weight and will eventually lead to me racing at my optimal race weight.