Anthropometry

1
Anthropometry

• BME 602 (792)
• SDSMT / USD
• Dr. Carter J. Kerk
• Spring 2007

2
Questions

• How tall are people nowadays?
• How far can we reach?
• How high do we sit?
• How strongly can we push with a hand or foot?
• How does the body develop strength?
• What are our work capabilities?
• What body sizes and capabilities are important in
  human modeling, design of prothetics, etc?
• Can we just ignore body size?

3
Human Variability

• Size
• Range of Motion
• Strength
• Endurance
• Stress tolerance
• Intelligence
• Dexterity
• etc.

4
Selection vs. Job Modification

• Assume a heavy box must be moved from Point A to
  Point B
• Selection Select a strong person (Fit the
  Person to the Job)
• Job Modification Redesign the job so almost
  anyone can do it (split the load, MMH aid) (Fit
  the Job to the Person)

5
Job Design

• Try to maximize the population accommodation
• But, account for the additional cost that may be
  incurred
• Do we want to design a fighter plane to
  accommodate a 610 pilot and/or a 410 pilot?

6
Anthropometry

• The measure of humans
• Demonstration
• Class Sample
• Height
• Hand length
• Pinch grip strength

7
The Story of Lacy and Andrew

• Does one size fit all?
• Lacy is 4 10 (147 cm)
• Andrew is 6 10 (208 cm)

8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
Love conquers all even anthropometry!
19
Measurement Techniques

• Ways to measure classical stature
• Standing naturally upright, but not stretched
• Standing freely but stretched to max height
• Leaning against a wall with back flattened and
  stretched to max height
• Lying face up
• Standing but slumped
• Results would yield several centimeter
  differences
• Standardized techniques must be used

20
Types of Distance Measurements

• Height straight-line, point-to-point vertical
  measurement
• Breadth straight-line, point-to-point horizontal
  measurement running across the body or segment
• Depth straight-line, point-to-point horizontal
  measurement running fore and aft
• Circumference closed measurement following a
  body contour
• Reach point-to-point measurement following the
  long axis of an arm or leg

21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
Anthropometric Design Principles

• Designing for the average
• Typical or default
• McDonalds seating
• Designing for the extremes
• Doorways, reach distances
• Designing for the range
• 5th tile female to 95 tile male
• 5 female to 6 2 male
• ADJUSTABILITY!

27
Functional Anthropometric Data

• Adjustments/Allowances to nude data
• shoe sole add 1 males, 0.6 females 2 lb
• clothing increases torso breadth by 0.3 torso
  circumference by 0.6 1 lb

28
Anthropometry Problem 1

• Dr. Kerk is 61 tall. What percentile is his
  stature among US Adult males?

29
Anthropometry Problem 2

• How tall is an 8th tile US adult female?

30
Design Problem

• Design the vertical adjustment range for a
  horizontal standing work surface that will
  accommodate knuckle height to elbow height for
  95 of US Adult males and females.

31
Normal Distribution
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
(No Transcript)
39
(No Transcript)
40
(No Transcript)
41
(No Transcript)
42
(No Transcript)
43
(No Transcript)
44
(No Transcript)
45
(No Transcript)
46
(No Transcript)
47
(No Transcript)
48
(No Transcript)