topic 9 - exercise following concussion

Question 1

what was the problem with the first consensus meeting regarding recovery

Answer 1

promoting bed rest - complete bed rest until asymptomatic
- no real evidence to back it up

Question 2

what are the differences in symptoms between usual activity and bed rest in the 10 days following concussion

Answer 2

usual = bigger drop in symptoms and back to low levels after 10 days

bed rest = delayed recovery for many days (started at similar symptom level to usual group)

Question 3

what did alexander monro find

Answer 3

• brain enclosed in an non expandable case of bone
• substance of the brain was nearly incompressible
• volume of the blood in the cranial cavity is constant / nearly constant
• continuous outflow of venous blood from the cranial cavity was required to make room fo the continuous incoming arterial blood

Question 4

what are the changes in CBF and CO2 with exercise

Answer 4

both increase with moderate exercise and decrease at high intensity

due to hyperventilation after VT2

Question 5

what is one of the main factors contribuitng to headache exacerbation during submax exercise

Answer 5

increase in CBF

Question 6

what is the association between exercise and time to medical clearance

Answer 6

no one recovered by 10 days
low activity = faster recovery than high activity (too much too soon)

more time spent in moderate-vigourous activity in the first 3 days = longer time to recovery

doing nothing and doing too much = delayed recoveries