Exp. No. 3
Obesity assessment and daily
calories requirement
Obesity is a complex, multifactorial condition in which excess body
fat may put a person at health risk. to avoid this risk, we need to
calculate the daily calories, and how many calories that the person
need per day, that is purpose of this experiment.
Through these following calculations we can get the daily calories and
all information that we want about the person.
1. Body mass index (BMI): the BMI gives a measure of relative
weight, adjusted for height. This allows comparisons both within
and between population.
BMI= weight/(height)2
2. Daily calories requirement
A. Resting Metabolic Rate
(RMR)
Is the energy the person
extend while at rest
(calorie per day).
B. Thermic Effect of Exercise (TEE)
Is the energy
expended due to
activity over and
above RMR.
TEE= RMR*activity factors
C. Thermic effect of food (TEF)
It's an extra calorie required, and we can measure it as
following:
TEF=(RMR+TEE)*0.1
Daily Cal. requirement= RMR+TEF+TEE
3. Calculate the body fat percentage
A basic way to measure body fat percentage is by using a
soft tape measure, like the kind you’d use for sewing, to
record measurements of different parts of the body.
- If you’re a man, measure the circumference of your neck
and abdomen. We make sure we measure the largest
part of each area. To calculate body fat percentage,
subtract your neck value from your abdomen value to
determine your circumference value
%body fat= 86.010*log10(abdomen-neck) 70.041*log10(height)+36.76
- if you’re a woman, you should record a measurement of
the circumference of your neck, natural waist, and hips.
Remember to measure each area at the widest part. To
calculate body fat percentage, add the waist and hip
measurements, and then subtract the neck measurement
to determine your circumference value.
% body fat= 163.205*log10(waist+hip-neck)-97.684*log10(height)-78.387
Result:
BMI= W/H2  110/1.75= 35
RMR= (15.3*W) +679 (15.3*110) +679= 2362 Cal.
TEE= RMR*0.6  2363*0.6= 1417.2 cal./day
TEF=(RMR+TEE) *0.1  (2362+1417.2) *0.1= 377.92 Cal./day
Daily Cal.= RMR+TEE+TEF= 2362+1417.2+377.92= 4156.32 Cal.
%body fat= 86.010*log10(abdomen-neck) 70.041*log10(height)+36.76
86.010*log10(48-16.9) 70.041*log10(68.8) +36.76=
35.34% obese
Discussion:
Body mass index (BMI) is a calculation that takes a person’s weight
and height into account to measure body, and it's important because
it shows How dangerous the level of obesity that a person has
reached.
In adults, obesity is defined as having a BMI of 30.0 or more Trusted
Source, according to the Centers for Disease Control and Prevention
(CDC).
Obesity is associated with a higher risk for serious diseases, such as
type 2 diabetes, heart disease, and cancer.
The daily calories mean, how many calories that the body need in the
day to make his activity.
Calories seem to be linked only to weight gain and obesity, but they
are vital for health. They only pose a health risk when people
consume more than the recommended amount. When thinking
about calories, you should not be considering just your diet but also
your level of physical activity.
body fat: It's made up of large, white cells that are stored under the
skin or around the organs in the belly, arms, buttocks, and thighs.
These fat cells are the body's way of storing energy for later use. This
type of fat also plays a large role in the function of hormones such as:
estrogen.