John Laird said:Dave Fawthrop said:On Tue, 19 Apr 2005 22:17:33 +0100, Peewiglet <[email hidden]>
wrote:
| Each to their own, but I'm not into the added salt thing myself.
The average diet in the UK has too much salt by a factor of IIRC about 10,
so there is no need to add any salt to anything. IMO water is all you
need on the hills, plus something to make it taste palatable: tea, coffee,
fruit juice or whatever you prefer.
Quite right. And there's ample sugar in a Mars bar. Eating is so much more
enjoyable than drinking vaguely sugary drinks. There should be some law or
other relating the taste of a Mars bar to the altitude, distance walked,
degree of tiredness, etc.
For the most part, I'd agree with both the comments here. The
majority of walkers don't really need to worry about getting the
correct electrolyte proportion in their drinks as they generally won't
be exerting themselves to the degree where rapid rehydration is
necessary.
However, for people who _are_ putting lots of effort in - keeping a
fast walking pace for several hours plus involving lots of ascent, for
example, then an isotonic drink will be a good way to make sure fluid
is absorbed as quickly as possible and dehydration is avoided. This
is especially important in hot weather.
Just to talk about the issue of salt for a moment, as there is a
common misconception about the point of salt in sports drinks. It is
not added as a nutrient. The aim is - for an isotonic drink - to
match the level of electrolyte concentration found in the blood. This
allows rapid absorbtion of fluid into the body. The amount of salt
otherwise consumed in the diet makes no difference to this!
Adding glucose to a drink is another issue entirely - its only purpose
is to provide energy. It's a good way to maintain energy levels
during sustained activity as fluid glucose is absorbed much more
quickly than sugars in food.
Like I said at the outset, most walkers probably don't need to worry
about these things too much. From my own experience, though, I have
found that I feel much better after a strenuous day's walk if I drink
an isotonic drink rather than plain water - less fatigue, more comfort
and just generally a better day! I certainly wouldn't bother with it
for a walk of a few hours or less.
I would repeat that anyone who's curious about the principles behind
these things should do a bit of research for themselves. There is
lots on the internet, and also many sports nutrition books in
libraries. Knowing a bit more about it puts you in a better position
to make your own choices for your activities. It also helps to decide
whether to take claims from well known sports drinks manufacturers
with a (heh) pinch of salt!