# Body Mass Index and Measurement

Topics: Body mass index, Mass, Pelvis Pages: 7 (832 words) Published: April 7, 2014
﻿NAME:Casey Martin
DATE:3-26-2014
PEB 1101

Lab 7: BMI/WHR and Body Composition Assessment

Body Mass Index (BMI)

Preparation
Before weighing and measuring, be sure to remove shoes, all heavy objects in pockets, and heavy jewelry (necklaces, rings, piercings, grills, etc.).

Instructions
1. Before stepping onto the scale, be sure that the scale is calibrated to zero. If not, ask for the instructor to zero the scale. Do not do it yourself. 2. Step onto the scale and have a partner weigh you. Calculate it to the nearest pound. 3. Record your weight. Convert it to kilograms.

Weight (lbs):182
Weight (kg): Weight (lbs)182 / 2.2 = 82 kg

4. Step onto the scale again, and turn around 180 degrees, facing away from the scale. 5. Be sure not to lean yourself against the measuring stick. 6. Have your partner measure your height to the nearest inch. 7. Record your height. Convert it to meters.

Height (in):5'9
Height (m): Height (in)69 / 39 = 1.76

8. Now calculate your BMI from the equation below.

Body Mass Index: (Weight (kg)82) / (Height(m)1.76^2) = 26.71

9. Assess your BMI from the chart found on p.181 in your textbook. How are you classified?

Waist/Hip Ratio (W/H)

Preparation
Be sure to wear loose, comfortable clothing. It will be helpful to familiarize yourself with the sites needed to be measured. The tape measure should be snug, but not tight and completely horizontal. Instructions

1. With a tape measure, first measure the circumference of the waist in inches. The position of measurement is the narrowest area of the torso, approximately 1/2-1 inch above the navel. Have the individual being tested hold their breath at mid-inhalation when performing the measurement. 2. Record the measurement.

Waist (in):34

3. The second measurement is the circumference of the hip in inches. The position of measurement is the widest area of the hips, approximately 1/2-1 inch below the iliac crest, or in line with the head of the femur. It is easiest to measure from the side of the body so you can see the widest area of the hips, buttocks.

4. Record the measurement.
Hips (in):42

5. Now calculate the W/H ratio from the equation below.

W/H Ratio:Waist (in) 34 / Hips (in) 42 = .80

6. Assess your health risk estimate from your WHR in conjunction with your BMI from the chart below

BMI

Waist to Hip Ratio for Males
Waist to Hip Ratio for Females

< 0.85

0.85 – 1.0

> 1.0

< 0.70

0.70 –0.85

> 0.85

20– 24

Very Low

Low

Moderate

Very Low

Low

Moderate

25– 29

Low

Moderate

High

Low

Moderate

High

30– 34

Moderate

High

Very High

Moderate

High

Very High

35– 39

High

Very High

Very High

High

Very High

Very High

> 40

Very High

Very High

Very High

Very High

Very High

Very High
Adapted from Jackson and Ross, Understanding Exercise for Health and Fitness, 3rd Ed., Kendall/Hunt Pub Co, 1997, p. 79.

At what health risk are you? Click on the box to select your risk level: 

What is the advantage of assessing yourself using the BMI in conjunction with the WHR? to determine if your bmi and whr circumferences is in loine with your target health goals

Skinfold Measurement

Preparation
Wear loose, comfortable clothing that will allow access to the measurement sites. Find a partner with whom you feel comfortable. If you are uncomfortable at any time during the lab, speak to the instructor.

Instructions
All measures will be taken on the right side of the body. For each site location, take 3 measurements and calculate the average. If your measurements differ by more than 2mm, repeat until they are within 2mm. Cycle through the locations: for males, the order would be chest, abdomen, thigh, chest abdomen, thigh, and repeat.

Men
1. Chest:...