Physical activity level (PAL) is determined based on United States Department of Agriculture (USDA) "Physical Activity Level" (https://fnic.nal.usda.gov/sites/fnic.nal.usda.gov/files/uploads/107-264.pdf).
Baseline activity is: the light-intensity activities of daily life, such as standing, walking slowly, and lifting lightweight objects.
No activity beyond baseline activities of daily living
Activity beyond baseline but fewer than 150 minutes of moderate-intensity physical activity a week
150 minutes to 300 minutes of moderate-intensity activity a week
More than the equivalent of 300 minutes of moderate-intensity physical activity a week