Occupational Ergonomics and Biomechanics (chapt. 12) Flashcards Preview

Psyc. Human Factors & Ergonomics > Occupational Ergonomics and Biomechanics (chapt. 12) > Flashcards

Flashcards in Occupational Ergonomics and Biomechanics (chapt. 12) Deck (22):
1

Trunk columm

Cervical, Dorsal, and Lumbar

2

Shoulder complex

shoulder is a complex system of bones, muscles, tendons, and ligaments includes Glenohumeral Joint and Acromioclavicular Joint particularity wide range of motion in all sagittal,transversal and horizontal.

3

Tendons

connective tissue resembling a tough cord or bans and always

4

Rotator cuff

shoulder-rotator cuff problems pain on the shoulders like frozen shoulder

5

static force

static loading of shoulder and arm muscles causes by carrying parts.

6

Carpal tunnel

The carpal tunnel is a narrow passageway on the palm side of your wrist made up of bones and ligaments. The median nerve, which controls sensation and movement in the thumb and first three fingers, runs through this passageway along with tendons to the fingers and thumb. When it's pinched or compressed, the result is numbness, tingling, weakness, or pain in the hand, called carpal tunnel

7

Syndrome

A syndrome is set of symptoms and physical findings that point to a certain diagnosis. All symptoms and

8

Designing for hand strength

Digit touch, pain touch, finger palmar grip,thumb fingerprint grip tip punch, thumb-fingerprints enclosure disk grip, finger-palm enclosure

9

Designing for body strength

Lower Extremity (hip, knee, foot)
-Hand strength, use of tables of exerted torques and forces, foot strength

10

Conditioning affecting force

body angles, work space dimensions, conditions affecting the force that can be exerted on

11

Basics Metabolism

Carbohydrates the main nutrient that fuels exercise of a moderate to high intensity. Fat can fuel low intensity exercise for long periods of time.Proteins are generally used to maintain and repair body tissues, and are not normally used to power muscle activity.

12

Physical demands of work

light under 2.5 kcal/min
moderte 2.5-5 kcal/min
heavy 5-7.5 kcal/min
very heavy 7.5-10 kcal/min
extremely heavy create than 10kcal/min

13

Workload measurement

oxygen consumption,heart rate, blood pressure ad minute ventilation, subjective measurement of physical

14

Oxygen consumption

the greater amount

15

heart rate

number of heart beats per minutes maximum heart rate= 206-(0.62 x age) or maximum heart rate=220-age

16

Borg RPE scale

Developed by borg to describe a person's perception of exertion

17

Work capacity

short-term maximum physical work capacity (MPWC) or aerobic capacity

18

Maximum holding time-rohnert law

Perceived discomfort, maximum holding time of contractions decreases exponentially as the muscle effort increases. This relationship between muscle effort and MHT can be used to predict the MH T from the muscle effort to a certain posture.

19

Upper extremity

shoulder complex,elbow,wrist and hands

20

Ergonomics analysis

Occupational Injuries, Product design,physical protection

21

Syndrome

A syndrome is a set of symptoms and physical findings that point to a certain diagnosis. All the symptoms and physical findings are always present. Findings maybe present in different grades of severity.

22

Lower extremity

hip,knee,foot