1. 12. Work Physiology

2. MUSCLE STRUCTURE AND METABOLISM

3. Muscle Structure
Figure 12.1 The structure of muscle

4. Aerobic and anaerobic Metabolism

5. Aerobic and anaerobic Metabolism
Phosphagen (ATP - CP) System
ATP  ADP + P + Energy
CP  C + P + Energy (rebound ADP and P to ATP)  most rapid means of replenishing ATP in the muscle cell

6. Anaerobic
Anaerobic Glycolysis System – oxygen debt
Glucose (C6H12O6)n  Lactic acid (2C3H6O3) + E
Energy + 3ADP + 3P  3ATP
Aerobic Reaction – steady state
C16H32O2 (carbohydrates and fatty acids) + 23O2  16CO2 + 16H2O + Energy
130 ADP + 130P + Energy  130ATP

7. CIRCULATORY AND RESPIRATORY STSTEMS

8. The Circulatory Systems
The Blood
The Structure of the Cardiovascular system
Blood Flow and Distribution

10. The Respiratory Systems
The Structure of the Respiratory system
Lung Capacity

11. ENERGY COST OF WORK AND WORKLOAD ASSESSMENT

12. Energy Cost of Work
working
metabolism
Resting-level metabolism

13. Working
Metabolism
Resting-level Metabolism

14. Measurement of Workload
Oxygen Consumption
Heart Rate
Blood Pressure and Minute Ventilation
Subjective Measurement of Physical Workload (Borg’s RPE)

15. BORG’S RATED PERCEIVED SCALE (1985)6
7 VERY, VERY, LIGHT 8
9 VERY LIGHT 10
11 FAIRLY LIGHT 12
13 SOMEWHAT HARD 14
15 HARD 16
17 VERY HARD 18
19 VERY, VERY, HARD 20

16. PHYSICAL WORK CAPACITY AND WHOLE-BODY FATIGUE

17. Short-Term and Long-Term Work Capacity

19. Causes and Control of Whole-Body Fatigue

20. Static Work and Local Muscle Fatigue

21. Corlett and Bishop (1976) Body Part Discomfort (BPD) Scale