2 - The Physiological Effects of the FF Ensemble

Question 1

What physiological factors interact and affect performance?

Answer 1

heat stress, metabolic stress, respiratory stress, cardiovascular stress, muscular stress, load carriage

Question 2

What is the purpose of FPE?

Answer 2

designed to protect the worker from intense heat, flame, and exposure to chemicals

Question 3

What is the normal range of core temperature?

Answer 3

36-38 degrees

Question 4

Does heat storage affect VO2?

Answer 4

no, but it does affect ventilation

Question 5

What 3 factors contribute to UHS?

Answer 5

metabolic rate, encapsulation, environmental exposure

Question 6

What contributes to thermal stress in firefighting?

Answer 6

heat from the environment, heat from demanding physical exercise

Question 7

What is uncompensable heat stress?

Answer 7

occurs when the evaporative heat loss required to maintain a thermal steady state exceeds the maximal evaporative capacity of the environment

Question 8

When is heat stress uncompensable?

Answer 8

when the heat strain index is >1

Question 9

When do the respiratory muscles have to work harder to ventilate the same volume with SCBA?

Answer 9

at about 80-100 L/min - respiratory muscles must generate about 1.5x the pressure to ventilate the same volume