"5 of my swimming buddies (ages 32-41) attemped to swim across San Francisco Bay from our hometown of Alameda, CA, to McCovey Cove at SBCPark....
I completed the 6.5 mile swim in 2 hours, 48 minutes. Conditions included a water temperature 61-63 F with westerly 10-15 MPH winds. We departed Crown Beach State Park, Alameda, on an outgoing tide @ 10:17AM. We stopped about every 30 minutes to drink fluids (carried by our pilot boat) and re-group. I ate an e-Gel an hour before starting the swim and every hour after that. We wore neoprene caps only-- no wetsuits..." (read
User since: July 2003
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is the measure of concentration of a fluid. Depending on the concentration, an ingested fluid can be either
hypertonic (more concentrated than your body fluids), isotonic (equal in concentration to your
body fluids) or hypotonic (less concentrated than your body fluids).
solutions such as water do a good job of hydrating your body.
Unfortunately they bring very little, if any, energy and electrolyte
replacement benefits into the cellular system.
Isotonic solutions can also provide rapid hydration, and they
have the potential advantage of bringing significant energy
and electrolyte replacement benefits into the cellular system. e-Fuel is
an Isotonic solution.
Hypertonic solutions are absorbed at a slower rate than hypotonic
or isotonic solutions, thus delaying the desired hydration and energy
benefits. During training or competition, hypertonic solutions can also
have a dehydrating effect as your body draws on it's available fluids to
dilute the solution down to an isotonic level.
OIsmolality is only one part of the equation. It is also important to look
at the carbohydrate sources used in your sports drink. Simple sugars that
are often found in sports drinks have the effect of raising the osmolality
more rapidly compared to equal amounts of complex carbohydrates. For this
reason, drinks made with maltodextrin (a complex carbohydrate) can provide
significantly more energy benefits in an isotonic state.
e-Fuel derives 71% of it's carbohydrate energy from complex carbohydrates
(maltodextrin), significantly more than the leading sports drinks. Because of this, e-Fuel provides up to
75% more energy than other isotonic
sports drinks containing glucose, sucrose and dextrose. Equally as
important is the rate at which energy is delivered to your body, and
e-Fuel's sustained energy formula is designed to avoid blood sugar
fluctuations that lead to the dreaded "bonk".