"Activity level" refers to how active or busy someone is throughout their day. It describes the amount of physical or mental effort one puts into their tasks, such as exercising, working, or engaging in hobbies. Full definition
In one study, researchers determined physical activity levels of individuals at the start of the study and every 2 years thereafter. (ahealthblog.com)
Furthermore, efforts to increase physical activity levels in this age group often fail. (sciencedaily.com)
And new research has confirmed that lighter evenings are linked with higher physical activity levels in children and young people. (naturallygoodhealthmagazine.com)