Distruption Of Biological Rhythms

Question 0

Which is easiest?

West to East
OR
East to West

Answer 0

East to west

Question 1

What’s one criticism of Recht’s research?

Answer 1

Some teams could’ve just been better

Question 2

In Klein et al’s research, how long did it take for the body to reset when travelling East to west?

Answer 2

1 day

Question 3

Name four symptoms of jet lag

Answer 3

Fatigue
Headaches
Sleep disturbances
Irritability
Stomach disturbances
Disorientation

Question 4

In Klein et al’s research, how long did it take for the body to reset when travelling west to east?

Answer 4

6 days

Question 5

What were Recht’s results?

Answer 5

East to West = 44% wins

West to East = 37% wins

Question 6

What’s practical application does research on endogenous pacemakers and sleep have?

Answer 6

Melatonin can be used to induce sleep and relieve symptoms of jet lag

Question 7

What practical application does shift work have?

Answer 7

Changing shifts to phase delay
Increasing shift rotation
Use of bright lights

Question 8

East to west is phase…

Answer 8

Delay

Question 9

Jet lag occurs when…

Answer 9

…the individual crosses time zones and districts the circadian and ultradian rhythms.

Question 10

What’s a IDA of the jet lag explanation?

Answer 10

It’s deterministic. It suggests that the individual can’t override their endogenous body clock.

Question 11

What evidence is there for the circadian trough resulting in poor performance?

Answer 11

Chernobyl and the Three Mile Island

Question 12

Who studied the U.S. Baseball team?

Answer 12

Recht et al

Question 14

What did Czeisler do to the Utah Chemical plant? Discuss

Answer 14

Changed rotation to phase delay and increase it from 7 days to 21 to allow workers to adjust.

Resulted in increased worker satisfaction, less accidents and higher output

Question 15

What happens between 12am and 4am?

Answer 15

Circadian trough
Body temperature at its lowest
Cortisol at its lowest
Decreased alertness

Question 16

West to east is phase…

Answer 16

Advance

Question 16

What two issues does shift work raise?

Answer 16

The circadian trough and health problems

Question 17

Why does shift work result in health problems?

Answer 17

Difficulty sleeping 
⬇️
Less hours of sleep
⬇️
Poor cognitive and physical performance and illness such a as type two diabetes and hypertension etc.

Question 18

What did Dawson and Campbell do?

Answer 18

Had employees work under 4 hour pulse of very bright light on their first night shift.

Found that body temperatures didn’t fall as much and therefore the bright light must have lastly reset they’re endogenous clocks
⬇️
Improve health of shift workers

Question 20

Who conducted research that disputes the idea that whether you get jet lag is deterministic? Discuss.

Answer 20

Fuller et al

Fasting and then eating during the social customs of the destination can inhibit jet lag because the endogenous clock resets itself. Therefore we are able to override out internal body clocks

Question 20

Who’s said “more problems occur when rotating shifts”

Answer 20

Gold et al

Question 20

What’s did Czeisler suggest?

Answer 20

Use of very bright lights can rest biological rhythms writhing 3 days

Question 22

How long did Recht’s study take?

Answer 22

3 years