Work Physiology

1
Work Physiology

• IENG 321
• SDSMT
• Spring 2004

2
Study Assignment

• Read Konz Johnson
• Chapter 4
• Chapter 5
• Chapter 13, Sections 13-14
• Chaffin Handout
• Fig 1.16, Table 2.3
• Kroemer Handout
• Fig 3-5

3
Metabolism

• Metabolism energy consumption of the body
• Basal maintain life
• Activity
• Digestion

4
Basal Metabolism

• Females (1.16 W/kg)(body weight, kg)
• Males (1.28 W/kg)(body weight, kg)
• See Table 11.1 for Energy conversions

5
Activity Metabolism

• Examples in Table 4.6
• Driving a car, 1.0 W/kg
• Washing floors, 1.4
• Heavy carpentry, 2.7
• Sawing wood, 6.6

6
Normal Distribution
7
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!

8
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

9
Anthropometry Problem 1

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

10
Anthropometry Problem 2

• What percentage of US Adult females are taller
  than 5 tall?

11
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.

12
Kroemer Engineering Physiology

• Figs 1-1, 1-2, 1-3, 1-7, 1-8, T1-3, 1-13, T1-7,
  1-14, T1-9, T1-10a, 1-18, p. 57-60

13
Chaffin, Andersson, MartinOccupational
Biomechanics

• Figures 3.9, 4.1