Change and Stability in Self-Reported Leisure-time Physical Activity Across Four Decades

The social development of recent decades has led to increased concern about increasing inactivity, and physical activity is both a national and international public health priority. 

The doctoral thesis examines the development of self-reported physical activity in leisure time with high intensity, i.e., activity that makes one breathless or sweaty, and focuses on changes and stability in such physical activity over time by focusing on different subgroups. 

This was done using data from two different projects, one of which looked at changes over time in one generation from when they were 13 to when they were 40 years old, while the other looked at changes across several generations of young people from 1985 to 2014.