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Backpacking Nutrition. David R. Andersen Wauhawk District Roundtable Commissioner. Overview Fat Protein Water Vitamins Minerals. Environmental Extremes Saving Fuel, Time, and Money Resources. Outline. Overview. How many calories do I need?
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Backpacking Nutrition David R. Andersen Wauhawk District Roundtable Commissioner
Overview Fat Protein Water Vitamins Minerals Environmental Extremes Saving Fuel, Time, and Money Resources Outline
Overview • How many calories do I need? • Load < 15% of body weight, gentle terrain needs not significantly different from normal – 2500 to 3500 calories for active female, 3000-4000 calories for active male • Load 25-35% of body weight, difficult terrain requires 500-1000 extra calories per day
Overview - continued • How many pounds of food should I take? • Rules of thumb • Easy/Moderate Hike – 1.5-2 lbs dehydrated food per day. 30-40% fat content • Difficult conditions – 2-2.5 lbs dehydrated food per day. 30-40% fat content • For a long duration hike (more than 3 days) boost fat to 35-40% by selecting high fat foods
Overview - continued • Fat vs. Carbohydrate? • These two are the preferred fuels for muscle. Ratio determined by energy demands • Protein • Eating excess protein stresses kidneys and is difficult to digest. Only 5-10% of diet should be protein.
Fat • Recommended diet for long-distance hikers 50-35-15. 50% carbohydrate, 35%fat, 15% protein. • Starvation robs you twice – less energy for the day’s work, plus your muscles are digested for fuel. • Maintaining or losing weight means that the fat you eat will not end up on your artery walls.
Protein • 4 servings per day of protein-rich foods are sufficient. • No need to supplement protein or take amino acids. • Excess protein is just digested as a carbohydrate with extra water required to remove nitrogen waste.
Water and Electrolytes • Drink a minimum of 3 quarts of water per day – more in hot climates. • No yellow snow! Clear to amber urine, not yellow. • Dehydration can lead to heat cramps, heat exhaustion, heat stroke, and hypothermia.
Water and Electrolytes – cont. • Will I get enough salt? – YES! If you are eating sufficient food, you do not need to worry about salt intake. • However, if you drink coffee/caffeinated beverages, the diuretic affect of the caffeine may induce electrolyte depletion. Water and Juice are best!
Vitamins • Vitamin C – water soluble antioxidant. Spiced cider or tablets – dried food loses its Vitamin C content rapidly. • Vitamin E – fat soluble antioxidant. Seeds/nuts, peanut butter, oil or margerine and whole grains. • Omega-3 fatty acids ALA, EPA, and DHA – fish oils and plant oils. Good for what ails you!
Minerals • More is NOT! better – stick to the RDA. • Calcium – add powdered skim milk at every opportunity on the trail. Dried/fresh cheese and sardines also help. But if you normally take a supplement, continue to do so on the trail. • Iron – unaffected by food dehydration so it is still present in all of the foods you normally find it in.
Environmental Extremes • Heat, cold, elevation, moisture
Extreme Cold • Take 4X more fuel than you would for summer hiking. • Avoid a high-protein diet. Eat frequent high-carbohydrate snacks. • Pack no-fuss meals: instant hot soups or cereals, hot drinks. • Prep work should be done at home. • Add 250-500 calories per day.
Extreme Heat • Twice as much water as usual (6 quarts/day). • Salty snacks/foods are encouraged. • Avoid coffee and high sugar drinks.
Extreme Moisture • Keep smiling – mildew and all! • Pack a special meal or treat just in case • Prepare labor-intensive meals, preferably hot and spicy! • Line stuff sacks with plastic bags before you set out.
Extreme Elevation (> 10K ft) • Appetite is suppressed at these elevations so avoid high-fat foods (harder to digest). • Eat at least 55% carbohydrate and 15% protein to avoid muscle loss. • 4 quarts of water/day to avoid dehydration. • Get adequate Vitamin E.
Saving Fuel • Rehydrate on the trail – zip-lock bag in a tupperware bowl or peanut butter jar. • Don’t simmer – bring water to a boil, add food, cover tightly, and turn off the stove. Let pot sit for recommended time. Contents will simmer. • Choose the right cook kit – shallow broad pans and windscreens. Paint the bottom with flat black stove paint. • Use no-cook or instant foods.
Saving Money • Dehydrate foods when they are in season. • Make your own fruit leather. I’ve got the recipe if you want it. • Ready-made or dry it yourself?
Saving Time • Combine ingredients at home. • Get organized • 3-bag method – put all breakfasts together in one bag, all lunches in a second, and suppers in a third. • Series method – one day’s supply of food in a bag by itself. • Clean-up • Drink your dishwater (don’t use soap). • Reduce trash to the absolute minimum!
Resources • Campmor has an OUTSTANDING web page for menu planning at http://www.campmor.com. • Other web resources are out there – e.g. search Google on “backpacking nutrition.” • Backpacker magazine usually has food articles. • Food dehydrator how-to books at your public library. • Hippie friends!?!