Exercising to peak cardiovascular performance can be linked to better brain health.

Scientists in Germany measured brain volumes of over 2000 adults between the ages of 21 and 84 who were fit enough, as measured by how efficiently they were able to use oxygen while pedalling at peak speed on a bicycle.

Those who used oxygen efficiently are defined as reaching peak cardiovascular endurance as a result of regular aerobic exercise.

The study found that those who reached peak cardiovascular performance had, on average, increased brain volume of five cubic centimetres.

Researchers noted the increased brain volumes were in areas where memory is processed, suggesting there may better brain health with regular aerobic exercise.

The findings are published in Mayo Clinic Proceedings.

(ABC)