Sympathetic Nervous System Mediation of Acute Exercise Effects on Childhood Brain and Cognition

The protocol will include a 25-min bout of exercise at an intensity of 75% HRmax, such that participants will engage in a 1-min warm up and a 1-min cool down, with the majority of time (i.e., 23-min) spent exercising at 75% of HRmax.

Participants will be asked to imagine that they are in a new class with 20 other students, and that their teacher has asked them to stand in front of the class and introduce themselves. The mental arithmetic task will entail asking children to serially subtract the number 5 from a larger number as quickly as possible.

Children will be asked to sit quietly or read a book of their choosing.