KIN 250
Health Related Physical Fitness Domain
Lab 3
Purpose: To acquaint the student with selected equipment utilized in anthropometric measurements by having the student perform selected measures. This lab is intended to allow the student to experience the difficulty in obtaining accurate measures, the importance of having trained technicians actually take the measures, and to allow a “hands on” experience with the actual, calibrated equipment. In no way is this lab to be perceived as a training exercise in use of the equipment: students will not become technicians in the use of anthropometric instrumentation. Specific information regarding the equipment and use of the equipment will be found in your text, in Chapter 5.
Directions: Working in same gendered, small groups, alternate turns in taking the specified measures. At the end of the lab, you will have your measurements, as they were taken by untrained (usually) peers. Use these measures to work through the two methods for BMI and the single method presented for assessment of Ideal Body Weight. Each student will submit the completed, computer generated lab by the date specified in the syllabus, or the date announced.
Instrumentation
For each of the following instruments, listed below, identify the purpose(s) of their use and give two specific measures, as examples, that can be obtained by use of each instrument. Identify two factors that make their use difficult or simple.
1.Lange Calipers
2.Bow Calipers
3.Long calipers or Anthropometers
4.Tape Measure
5.Dynamometer
Upon completing the measurements and any calculations, answer the following questions:
1.How do the magnitudes of the two methods for BMI Determination compare?
2.What are the classifications of each method and how do they compare?
3.How does the calculated Ideal Body Weight compare to your actual body weight?
4.Relative to the statement of the purpose of this lab, what factors could contribute to over or under estimates of your Ideal Body Weight?
Assessing the Body Mass Index (BMI)
Use the following two methods to determine BMI.
Method 1. BMI Determination: Equation, or calculated Method.
A crude index of obesity can be calculated by dividing the body weight (kg) by the body height squared (cm). Using the following equation, show the substitution and the answer. Multiply your answer by 10,000.
BMI = body weight (kg)
height 2 (cm)
BMI = ______
The classifications into which individuals are placed depend on the number obtained specifically, the Obesity Classifications Based on Body Mass Index (BMI)* using this calculation are:
*ClassificationMenWomen
Normal24-2723-26
Moderately Obese28-3127-32
Severely Obese >31 >32
* from The Surgeon General’s Report on Nutrition and Health (1988, p. 284)
Method 2. BMI Determination: Use of a Nomogram.
Report the following information:
Weight ____ lb. or kg
Height ____ in or cm
Using the nomogram, place a straightedge on two specific points: your height and your weight. Where the straightedge crosses the BMI estimate (the scale located in the middle of your nomogram), is your estimated BMI. Record that number: BMI ______
The classifications into which individuals are placed depend on the number obtained and are specifically noted in the area of the nomogram where your straightedge crossed the BMI estimate.
Assessment of Ideal Body Weight
The second part of this lab deals with the assessment of ideal body weight utilizing the Skeletal Frame Technique. You will need to use the Bow Calipers for the biacromial width and biiliac width and the Long Calipers for height. The biacromial width and the height measures must be taken from the rear of the subject/client. The biiliac width is taken from the anterior/front of the subject/client.
Biacromial (shoulder) Width – the distance between the lateral borders of the
acromial processes of the scapula while the individual is standing erect with the arms
hanging vertically.
Biiliac (hip) Width – the distance between the lateral margins of the iliac crests.
To obtain accurate measures using the bow calipers, the bony landmarks must be palpated, and each tip of the caliper placed on the outside of the appropriate landmark. The soft tissues surrounding the body landmarks must be compressed firmly using the tips of the calipers.
From the table that will be distributed in class, you will obtain conversion factors that are required for the Skeletal Frame Technique. As you go through these calculations, make sure your measurements are in inches. The measurements obtained using the bow calipers are in centimeters!! (1 in. = 2.54 cm.)
Prior to completing the steps for finding your “Ideal Body Weight” Skeletal Frame Technique, obtain the following numbers:
Age: _____
Height _____ (in.) No shoes.
Biacromial width: ____ (in.)
Biiliac Width: _____ (in.)
Age-gender constant (from Table): ______
Height conversion factor (from Table): ______
Biacromial conversion factor (from Table):______
Biiliac conversion factor (from Table):______
Steps for finding your “Ideal Body Weight” using the Skeletal Frame Technique:
1. Multiply your height by the height conversion factor:_____
2.Multiply your biacromial width by its conversion factor: _____
3.Multiply your biiliac width by its conversion factor:_____
4.Total these three values:_____
5.Subtract your age-gender constant from the total in #4: _____
“Ideal Body Weight”_____
Please remember that this estimate relies on a number of factors that you have been asked to identify in question 4 found on page 1 of this lab.