Bodyfat Measurement
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Sourced from:http://www.impulseadventure.com/weights/skinfold.html
I have cut out the possibly irrelevant information. If you want to see more, you can click the link above
Whether you are trying a new gainer diet, cutting up, or just curious, it's often a good idea to get a bodyfat measurement done. There are various methods in use, and some are far better than others. In order of decreasing accuracy:
* Autopsy
Extremely accurate. The physician seperates your fat from other tissues and weighs everything. Fairly inconvenient, as it requires you to be dead.
* Hydrostatic Weighing ("Dunk Tank")
Requires the individual to expel all their air underwater. Expensive and difficult to locate a suitable facility.
* Skinfold Measurements
By far the most common method and is generally accurate to within a few percentage points. Cheap (usually about $5 to get the test done at a reputable fitness center). More detail on this method, below.
* Bioelectrical Impedance (BIA)
These devices pass a small current between either your hands or feet and determine the effective resistance. From this, and a host of assumptions about the conductivities of various body tissues, they try to determine the percentage of body fat. Some bathroom scales even include this ability but one should be very skeptical of the unit's accuracy. Some people have reported wildly-varying results with these, although some manufacturers claim high correlations with skinfold or underwater weighing results. Very dependant upon your state of hydration.
* Infra-red (IR)
Infra-red measurements are made at your finger, and through some magic, they attempt to determine your body fat composition. Very inaccurate, but convenient and fast.
* Generalized Formulae (waist, height, weight)
Numerous studies into the anthropometry of various individuals have been compiled into tables that include the person's weight, height, waist and actual bodyfat (generally done via skinfold measurements). A simple linear prediction formula is then created that fits loosely to the average population. These are very easy to use, and cost you nothing, but they should only serve as a very rough estimate. A section below details a few of these formulae.
Generalized Equations
Equation 1:
For men: Bodyfat = -98.42 + 4.15*waist - .082*bodyweight
For women: Bodyfat = -76.76 + 4.15*waist - 0.082*bodyweight
NOTE: "waist" is in inches, "bodyweight" is in pounds.
Both formulae will give you the total number of pounds of bodyfat, not your percentage. To get your percentage, divide the result above by your total body weight. -
last time i tried this thing... stepped on the thing hor den they tell me my body fat %
but hor i wonder if they take boob size into consideration...
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yepOriginally posted by shinta:last time i tried this thing... stepped on the thing hor den they tell me my body fat %
but hor i wonder if they take boob size into consideration...
which is why females have 5+% more bodyfat than males
but hor, step one not that accurate leh....... -
i accidentally saw my ex colleague de.. she's skin n bones.... they put 24%Originally posted by eagle:yep
which is why females have 5+% more bodyfat than males
but hor, step one not that accurate leh.......
i so much heavier than her... i 44%
but she's a/b cup i think..
wat body fat % is healthy ar? den for each increase in cup size should be extra how many %? -
cup size I dunno liaoOriginally posted by shinta:i accidentally saw my ex colleague de.. she's skin n bones.... they put 24%
i so much heavier than her... i 44%
but she's a/b cup i think..
wat body fat % is healthy ar? den for each increase in cup size should be extra how many %?
actually the best gauge is to see if can see abs and have defined muscles... But me not there yet -
Originally posted by eagle:cup size I dunno liao
actually the best gauge is to see if can see abs and have defined muscles... But me not there yet 
my one cannot see abs one... even when i was doin sit up/crunches everyday
tt time think mon, wed n sat cca den do many sets of crunches
tues n thurs pe.. do many sit up
no abs leh..
do many push up oso during cca n pe... oso no see defined muscles leh
i just look flabby
tho the push ups i do every week easily exceeds 200 and crunches/sit ups at least 200..
or too little?
the guys in my cca hor.. their muscles become very well defined leh.. my one looks flabby... but touch hor.. zhen cai shi liao leh
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fats mahOriginally posted by shinta:
my one cannot see abs one... even when i was doin sit up/crunches everyday
tt time think mon, wed n sat cca den do many sets of crunches
tues n thurs pe.. do many sit up
no abs leh..
do many push up oso during cca n pe... oso no see defined muscles leh
i just look flabby
tho the push ups i do every week easily exceeds 200 and crunches/sit ups at least 200..
or too little?
the guys in my cca hor.. their muscles become very well defined leh.. my one looks flabby... but touch hor.. zhen cai shi liao leh
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Originally posted by eagle:fats mah
no wonder so many ppl call me fat when i was 45kg, 1.58m tall -
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my relatives... they must see my bones and my veins... if not i'm fat...Originally posted by eagle: 
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I got an error in calculationOriginally posted by eagle:Sourced from:http://www.impulseadventure.com/weights/skinfold.html
Generalized Equations
Equation 1:
For men: Bodyfat = -98.42 + 4.15*waist - .082*bodyweight
For women: Bodyfat = -76.76 + 4.15*waist - 0.082*bodyweight
NOTE: "waist" is in inches, "bodyweight" is in pounds.
Both formulae will give you the total number of pounds of bodyfat, not your percentage. To get your percentage, divide the result above by your total body weight.
For example Lets use waist as 34 inch
Weight as 75kg = 165.3pounds
so the formula is
-98.42 + (4.15*34) - (0.082*165.3) = Ans A (29.1254)
and the Ans / 165.3 = Ans B
which is 29.1254/165.3 = 0.1762
So the answer x 100 = 17.6% of bodyfat?
and wats the gauge ? how much is healthy level -
why no ANS !!! (grumbles)
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Originally posted by pierre^^:why no ANS !!! (grumbles)
It is already claimed by the author that this formula is not exactly very accurate...
How much percentage is good....... Hmmm..... I think I read before that for guys, <18% is good. And <12% can see nice ripped abs I think..... Not very sure...... -
F.... i am over 20%
OH NO !!! -
It's inaccurate la. I use the formula and I got about 17%. But I don't seem like 17%.........Originally posted by pierre^^:F.... i am over 20%
OH NO !!! -
man... i need a sure proof way to lose those tummies...
they are happily becoming bigger... -
Mainly, you will need to put your body in a constant state of "muscle repairs" by doing activities. Gymming, swimming, activities that taxes muscles, all helps. This will enable your caloric expenditure to remain high even during rest periodsOriginally posted by pierre^^:man... i need a sure proof way to lose those tummies...
they are happily becoming bigger...
Jogging slowly on the other hand burns while you are doing it, and stops burning as much when u stop. One way would be to vary your jogging speeds during your jogs. Jogging helps in many things that other activities do not, and is a great way to maintain cardiovascular health.
Another up and coming way is HIIT, but I haven't read up much into it yet. -
actually i am skeptical that doing those heavy weights will do any difference to the tummy
maybe it burn fats but its not at the tummy area lo
Hiit. ya i got do burpees at home
but realli cmi man.. do 3 sets oni starts to see stars -
It does actually. But it must be really heavy, to the point where you really tax your muscles.Originally posted by pierre^^:actually i am skeptical that doing those heavy weights will do any difference to the tummy
maybe it burn fats but its not at the tummy area lo
Hiit. ya i got do burpees at home
but realli cmi man.. do 3 sets oni starts to see stars
Reasons:
1) You need energy to repair and build muscles
2) You need more energy to move "damaged" muscles when doing everyday activities
3) 1g of muscle burn 2~3 times more energy than 1g of fats when at rest.
Fats at the tummy just show that the fat level is high. It is normal for guys to have more fats deposited at the tummy. When enough overall bodyfat has been reduced, the tummy fats would have been reduced too. There's no spot reducing exercises
Meals are also important. What you eat, and how fast it get digested. When you eat.
Talk so much, I'm still a bit on the fat side. However, I'm pretty sure that if I do not what I'm doing now, I will have been much much much fatter.