Research in people over age 60 who were randomly assigned to experience six months of aerobic exercise showed:
A) that they developed more axons.
B) that they developed less tumors.
C) that they developed greater thickness of the cortex.
D) that they developed less thickness of the cortex.

Question

Quizplus · Accepted Answer

Research has shown that six months of aerobic exercise in people over age 60 can lead to an increase in the thickness of the cortex, the outer layer of the brain that is important for cognitive functioning. This is due to the growth of new blood vessels and the production of proteins that support brain health. Exercise has also been linked to a reduced risk of dementia and other age-related cognitive decline. There is no evidence to suggest that exercise leads to the development of more axons, or that it reduces the risk of tumors.

Research in People Over Age 60 Who Were Randomly Assigned