Determining Nutrition Needs
Total Daily Energy Expenditure (TDEE)
includes REE (60-75%), TEF(5-10%), and TEE(15-30%).
Resting Energy Expenditure (REE)
all energy requiring processes at rest (breathing) (60%-75% of TDEE). lean males have higher REE than fat females (muscle v. fat), declines with age.
Thermic Effect of Food (TEF)
the energy require to metabolize nutrients (5%-10% of TDEE). generally not manipulated in dietary planning, snacking may help increase metabolism. the more kcal in meal the greater the TEF.
Thermic Effect of Exercise (TEE)
energy required for physical activity (15%-30% of TDEE). depends on activity, duration, and intensity.
factors that raise REE
-cold exposure (shivering)
convert pounds into kilograms
divide weight by 2.2 (i.e. 150lbs / 2.2 = 68kg
convert inches into centimeters
multiply height by 2.54 (i.e. 67inches * 2.54 = 170cm)
contributions to calorie needs
-extra winter clothing
-pulling a sled with food or gear
-increase CHO (carbohydrates) at altitude
-increase fat in cold
-adequate protein for muscle maintenance
factors in food planning
backcountry nutrition pinnacle
#1 - exercise & water
#2 - grains & starchy veggies
#3 - beans, nuts, seeds, veggies, fruit
#4 - meat, poultry, eggs, fish, dairy
#5 - fats & sweets (use sparingly)
bulk rationing system
-based on pounds per person per day
-allows for flexibility in meal planning
-can supplement with fresh fish & wild edibles
-add spices for taste