Physical Activity Log
Self-reports of physical activity by a diary or log method provide a detailed record of an individual’s physical activity on a daily basis; these records are generally completed prospectively as the activities are completed. In a physical activity diary (also known as a record), individuals are instructed to record the individual bouts of activity as they occur during the day. In contrast, logs capture the time individuals spend in broad categories of activity: inactive, sitting, light, moderate, vigorous and very vigorous and examples of activities in each intensity level are provided.
In both the diary and log, the 24 hour period is typically broken down into 15 minute segments and individuals record their activity. Completing diaries and logs every 15 minutes may lead to the omission of some activities, but reducing the period has been shown to be too intensive and lead to non completion