pokey
03-03-2008, 12:56 AM
Food energy, as well as the energy the body needs is measured by kilocalories. Kilocalories can be determined by burning a weighed portion of food and measuring the heat it produces. A kilocalorie rasies the temp of a kilogram of water by 1 degree Celcius.
This is were it gets a little interesting, and a little tricky, as you might know kilo is a prefix for 1000. Despite what you've been told (if your American at least) a cheeseburger might have 350 Calories, that big C right there is what fucks shit up. The Calorie is an abbreviation coined by American media to mean kiloc[U/]alorie (1000 [U]calories) as opposed to the calorie(1 [U]c[U/]alorie). In my nutrition informals i shall be refering to kilocalories as kcals to shorten the proper term.
The number of kals you need is based on 3 factors: your energy needs when you are awake and asleep , level of physical activity (basal metabolism), and the energy needed to absorb and digest food(thermic effect of food). Basal metabolism is energy for your vitals i.e. your heart pumps to all parts of the body, your cells make the protein, and so fourth. your basal metabolic rate (BMR) depends on the following:
Gender- men have higher BMR because men have higher portion of muscle tissue (muscle requires more metabolic energy than fat)
Age- as people get older they generally gain fat and lose muscle tissue. BMR declines about 2% each decade after 30 years old. (so keep up the maximum while your young to be like Couture)
Growth- children, pregnate, and lactating women have higher BMR
Height- tall people have more body surface, therefore lose body heat faster, in turn their BMR is higher
Temperature- BMR increases in both hot and cold weather to keep the body temp constant
Fever and Stress- both increase BMR. fever increases BMR by 7% for each 1 degree Fahrenheit! Stress makes the body secrete hormones that speed up metabolism to make the body adjust quicker.
Exercise- increases BMR for many hours after workout
Smoking and Caffeine- both cause increased energy use
Sleep- BMR is lowest while sleeping
BMR decreases when you eat fewer kcals than usual. BMR is the counts for the most energy wasted, approxamitly 2/3 for unactive people.
Teh amount you workout most influences how many kcal you burn, DUH. But how much energy used depends on the size of the individual, bigger people need more force to move themselves, so they use more energy. Physical activity uses 25%-40% of how much energy you need.
The thermic effect of food is the least of your energy worries, taking up only 5%-10% of your energy.
Well thats it for now, our next topic will likely be nutrients. I hope people get the most out of themselves with my nutrition threads, and so far this feels like a good start.
Peace, Pot, and Micro-Dot,
donpokey
This is were it gets a little interesting, and a little tricky, as you might know kilo is a prefix for 1000. Despite what you've been told (if your American at least) a cheeseburger might have 350 Calories, that big C right there is what fucks shit up. The Calorie is an abbreviation coined by American media to mean kiloc[U/]alorie (1000 [U]calories) as opposed to the calorie(1 [U]c[U/]alorie). In my nutrition informals i shall be refering to kilocalories as kcals to shorten the proper term.
The number of kals you need is based on 3 factors: your energy needs when you are awake and asleep , level of physical activity (basal metabolism), and the energy needed to absorb and digest food(thermic effect of food). Basal metabolism is energy for your vitals i.e. your heart pumps to all parts of the body, your cells make the protein, and so fourth. your basal metabolic rate (BMR) depends on the following:
Gender- men have higher BMR because men have higher portion of muscle tissue (muscle requires more metabolic energy than fat)
Age- as people get older they generally gain fat and lose muscle tissue. BMR declines about 2% each decade after 30 years old. (so keep up the maximum while your young to be like Couture)
Growth- children, pregnate, and lactating women have higher BMR
Height- tall people have more body surface, therefore lose body heat faster, in turn their BMR is higher
Temperature- BMR increases in both hot and cold weather to keep the body temp constant
Fever and Stress- both increase BMR. fever increases BMR by 7% for each 1 degree Fahrenheit! Stress makes the body secrete hormones that speed up metabolism to make the body adjust quicker.
Exercise- increases BMR for many hours after workout
Smoking and Caffeine- both cause increased energy use
Sleep- BMR is lowest while sleeping
BMR decreases when you eat fewer kcals than usual. BMR is the counts for the most energy wasted, approxamitly 2/3 for unactive people.
Teh amount you workout most influences how many kcal you burn, DUH. But how much energy used depends on the size of the individual, bigger people need more force to move themselves, so they use more energy. Physical activity uses 25%-40% of how much energy you need.
The thermic effect of food is the least of your energy worries, taking up only 5%-10% of your energy.
Well thats it for now, our next topic will likely be nutrients. I hope people get the most out of themselves with my nutrition threads, and so far this feels like a good start.
Peace, Pot, and Micro-Dot,
donpokey