The Paffenbarger questionnaire is a commonly-used, self-reported measure of leisure-time physical activity.
Construct Definition (and Source):
Any form of exercise or movement. Physical activity may include planned activity such as walking, running, basketball, or other sports. Physical activity may also include other daily activities such as household chores, yard work, walking the dog, etc. (NCI)
Paffenbarger, R. S., Jr, Wing, A. L., & Hyde, R. T. (1978). Physical activity as an index of heart attack risk in college alumni. American journal of epidemiology, 108(3), 161–175. https://doi.org/10.1093/oxfordjournals.aje.a112608
If you are interested in all the references for this measure, go to PubMed.