Presentation is loading. Please wait.

Presentation is loading. Please wait.

INSY 3020 Work Physiology Dr. Robert E. Thomas Industrial & Systems Engineering Department Auburn University Spring 2005.

Similar presentations


Presentation on theme: "INSY 3020 Work Physiology Dr. Robert E. Thomas Industrial & Systems Engineering Department Auburn University Spring 2005."— Presentation transcript:

1 INSY 3020 Work Physiology Dr. Robert E. Thomas Industrial & Systems Engineering Department Auburn University Spring 2005

2

3 ANTERIORPOSTERIOR

4

5

6

7

8

9

10

11

12

13 Systems Most Relevant To Work Physiology Muscular Cardiovascular Respiratory Nervous

14 Types of Muscle Tissue - Skeletal - Cardiac - Smooth

15

16

17 Muscle System Functions Movement / Posture Circulation Blood Pressure Food Movement Heat Production Breathing Expelling of Waste Products

18 Skeletal Muscle Motor Units “ The functional unit of neuro- muscular control of movement. It consists of an anterior motor neuron in the spinal cord, the nerve fibers that innervate muscle cells, and junctions between the nerve and muscle cells.”

19

20

21

22 Physiology vs. Work Physiology Physiology The study of the functions of the body parts. ie. How the body parts work.

23 Physiology Vs.. Work Physiology (cont’d) Exercise / Work Physiology The study, description, evaluation, and explanation of the physiological changes in the human body resulting from either a single or repeated series of exposure to work stresses.

24 Exercise Physiology vs. Work Physiology (cont’d) Primary differences are in the target populations and in some assumptions about where and how they are working.

25 Exercise Physiology Goal: Maximize the physiological efficiency of the target population. Target Population: Fit, healthy, young, and motivated. Environment: Usually optimum or controlled.

26 Work Physiology Goal: To ensure worker can perform task efficiently and safely within the environment. Target Population: All kinds of people. Environment: Usually not optimal or controlled (noise, heat, etc.)

27 How Do We USE Work Physiology? To enhance EFFICIENCY – To monitor energy expenditure and avoid excess fatigue To ensure SAFETY - do not push people beyond their physical limitations.

28 Example Uses of Work Physiology Can the job be safely accomplished by people---- for the required duration using prescribed tools and methods. Which methods are easier? Can a specific individual perform a job safely? How should jobs be ranked (for compensation & work-rest cycle purposes)?

29 EFFICIENCY

30

31

32

33

34 Heart Rate Measurements Palpation Electronics Light Sound Reference Konz, pg. 123

35

36

37

38 Effects of Aging Decline starts at about 30 years Progressive loss of muscle mass Lost muscle tissue replaced by fat Decrease in maximal strength Diminishing of muscle reflexes

39

40 Fatigue Two general types: Central... Nerve related Peripheral... Muscle related

41 Efficiency Lesson Use heart rate to evaluate energy usage Design work for light to moderate energy expenditure

42 SAFETY

43 Heart Rate Max HR (Beats/Min)= 220-Age (In Years) Criteria: Rest: 65-85 BPM Not Consistently Above (Moderately Heavy Work): 120- 150BPM

44 Work –Rest Cycles

45 Work-Rest Cycles

46 AIHA CRITERIA For Work Rest Cycles

47 Summary Ergonomics uses physiological responses to address both efficiency and safety issues Responses of the respiratory and cardiovascular systems are are most accessible Oxygen uptake and Heart Rate are the most frequently used measures…..but particularly heart rate Work -Rest Cycles are used to practically achieve efficiency and safety goals when work varied and includes is moderate to heavy components


Download ppt "INSY 3020 Work Physiology Dr. Robert E. Thomas Industrial & Systems Engineering Department Auburn University Spring 2005."

Similar presentations


Ads by Google