kj and kcal -

[chris_w_65]

Ok maybe a dumb question but when checking food for kcal intake you must work on the energy kcal content ?

 

Correct. And if in kj then divide by 4.18 to get kCal

[stewie911]

was thinking - saw on converter website that 1kcal = 4.184kj ... would this be right? i trained yesterday and lost a total of 969Kcal (polar) then i lost 4050kj ??? my current diet allows me 3725kj per day _ then i have lost more that what i ate? (good thing for weightloss) ... could this be right???

 

Ok I'm an ass, but I just ate a whole day worth of food:

4 boerewors rolls

rolls = 4 x 760kj = 3040

wors = 4 x 300kj? = 1200

 

Total = 4240kj

[firewolf]

your daily Kj requirements would to closer to 10 000 per day.

[chris_w_65]

Ok I'm an ass, but I just ate a whole day worth of food:

4 boerewors rolls

rolls = 4 x 760kj = 3040

wors = 4 x 300kj? = 1200

 

Total = 4240kj

 

 

I just Googled, 13cm of thick boerewors (60g) = 995kj

[firewolf]

We normally refer to Kilocalories as Calories so when you see 800 calories on a food label it actually means 800 kilocalories, and the same applies when you calculate an activity that burns 800 calories.

 

When referring to food consumption and energy expenditure we refer to them in multiples of 1000.

 

Thus 1000 calories = 1 kilocalerie of kcal.

 

A calorie is the amount of energy (or heat) needed to increase the temp of one gram of water by 1 degree C.

So 1000 calories = 1 kilocalorie, is the energy it takes to raise the temp of 1kg of water by 1 degree C.

 

There are 239 calories in 1 kilojoule. A joule is a 1 unit of electrical energy it takes to equal the current of 1 ampere passed through a resistance of 1 ohm for 1 second. So, 1000 joules = 1 kilocalorie or kJ.

 

One calorie has the same energy value as 4.186 kilojoules. It takes 3500 calories to equal one pound of body weight.

 

1 calorie = 4.2 joules so 1 kilocalorie = 4.2 kilojoules.

[firewolf]

Formula to work out Daily Calorie Requirements.

 

Your weight X 24 = Value A.

 

Light Activity Value A X 0.3 = Value B.

Medium Activity Value A X 0.5 = Value B

Hard Activity Value A X 0.7 = Value B.

 

Add Value A and Value B to = Value C

 

C = Recommended Daily Caloric Intake.

 

Then to convert to kJ 1 Calorie = 1 Kilojoule = 4.2kJ.

 

So: Value A + Value B = Value C X 4.2 = RDCI expressed in kJ.

[chris_w_65]

We normally refer to Kilocalories as Calories so when you see 800 calories on a food label it actually means 800 kilocalories, and the same applies when you calculate an activity that burns 800 calories.

 

When referring to food consumption and energy expenditure we refer to them in multiples of 1000.

 

Thus 1000 calories = 1 kilocalerie of kcal.

 

A calorie is the amount of energy (or heat) needed to increase the temp of one gram of water by 1 degree C.

So 1000 calories = 1 kilocalorie, is the energy it takes to raise the temp of 1kg of water by 1 degree C.

 

There are 239 calories in 1 kilojoule. A joule is a 1 unit of electrical energy it takes to equal the current of 1 ampere passed through a resistance of 1 ohm for 1 second. So, 1000 joules = 1 kilocalorie or kJ.

 

One calorie has the same energy value as 4.186 kilojoules. It takes 3500 calories to equal one pound of body weight.

 

1 calorie = 4.2 joules so 1 kilocalorie = 4.2 kilojoules.

 

Would you agree that it takes Xkj to move Ykg Zm

[firewolf]

Even better would be for Ra to add to ce then factor in Tec in a multiple of R*E*S*U*L*T then stream it out in real time aver the interweb so that I can see the results from todays race, which is what I am waiting for, which is why I am doing this, which is kinda fun, but also kinda not.

[Tankman]

That is

 

90g Jungle Crunch Muesli - 348

100g fat free yoghurt - 43

 

I tin Tuna in brine - 91

40g Kraft Miracle Light mayonaise - 63

 

1x avocado (175g excluding seed and skin) - 280

 

150ml fat free milk - 52

 

= 900 kCal / 3725 kj

 

Lucky for me I eat 400 kCal more than that

 

That's breakfast done, what is for lunch?