Food for Potential Energy
FOOD (Macro-nutrients)
One of the most important aspects of hill walking or trekking and adventure holidays is to maintain your calorie intake to keep pace with the terrain & amount of equipment you are carrying.
The best ratio for active people is:
CARBOHYDRATES
50-60% Simple carbs. like sugar & sweets are quickly converted into glucose for instant energy use. Complex carbs. i.e. oats, wholemeal bread take longer to digest and are better as a long term energy source.
FATS 25-35%.
These provide longer stores of energy. Do not exclude fats i.e. a fat-free diet, as they are essential in the metabolism of carbohydrates.
PROTEINS 15%
These take days to metabolise but are essential for the body's repair processes.
WATER
Important too is to take as much water as you can carry, because water is rapidly lost through sweat and is essential to metabolise foods. Due to sweating, many electrolytes will be lost, especially potassium (the best replacement source is a banana). Even a 5% dehydration can result in a 20-30% reduction in metabolism, resulting in decreased performance e.g. headaches, weakness, fatigue, irritability, loss of appetite. If your urine is clear, ok but if it is noticeably yellow then you are dehydrated. Dehydration creeps up un-noticed so remember to drink regularly even though you may not feel thirsty. Alas, alcoholic and caffeine containing drinks are not recommended, unless you are in shelter at the end of the day! Alcohol increases the peripheral blood circulation leading to rapid heat loss and the dangers of hypothermia. Caffeine and alcohol are both diuretics causing excessive water loss, leading to a downward spiral of dehydration.
SNOW
Don't eat snow! It takes more energy to melt snow in your mouth than any increase of energy gained through increased metabolism. Melt it first.
SUPPLEMENTS (Micro-nutrients)
Organic food supplements are just that - they are produced from organically grown food and not synthesised in a lab. Extra exertion depletes vitamins & minerals, requiring additional vitamin intake. As it would be impractical to take fresh vegetable on a hike, the best way is to take your organic supplements. Organic vitamens (as opposed to the cheaper synthetic types) include the phytofactors found in vegetables, which assist in the efficient usage of the main vitamin, whereas synthetic vitamins are not so readily absorbed, resulting in expensive urine!
The above guide advises on food for sport energy & walking calories. If you have any specific enquiries please seek the advice of your own nutritional adviser.
http://www.trekking-hiking-outdoors.co.uk
http://www.trekking- hiking-outdoors.co.uk/food-for-potential-energy.html
Mike Jozefiak - Interested in organic nutrition, organic supplementation & health (amongst other things!)
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