Anthropometry (chapt.10)

Question 1

anthropometry

Answer 1

science of measuring human bodies especially on a comparative basis. Anthropometry was a pseudoscience used mainly to classify potential criminals by facial characteristics. Has practical uses:

• Assess nutritional status
• Design equipment (body dimensions,objects) work station, Buildings

Question 2

Human Variability

Answer 2

age
sex
radical and ethnic group
occupational
generational or secular
change over time

Question 3

statistics

Answer 3

Most body data comes in statistical terms means (average),standard deviation, range,median, peakedness,flatness

Question 4

Percentile

Answer 4

Percentiles are use to select subjects for fit test. Any body dimension, design value,or score of a subject can be exactly located.Seat height as fitting a certain value of lower leg length. Percentile helps in the selection of person to use a given product.

Multiply standard deviation S by a factor K, selected from anthropometric data table. Then add the product to the mean m

Question 5

P=m+k*s

Answer 5

If the desired percentile is above is above the 50th percentile, the factor K has a positive sign and the product of KS is added to the mean m; if the percentile value is below average, k is negative and the product kS is subtracted from the mean.

1st percentile is at m-KS with K=2.00
50th percentile is at m with K=0
95th percentile is at m+KS with K=1.64

Question 6

Work Surface Height-Standing

Answer 6

Different Tasks Require Different work surface heights (NIOSH)

• sitting
• reach
• posture versus motions