Table 2 Physical activity grouping criteria

High exercise group

Meet any of the following conditions:

1. Various types of high-intensity physical activity for 3 days or more, and the total weekly physical activity level is greater than or equal to 1500MET-min/w

2. The total of the three intensities of Physical Activity is greater than 7 days, and the total weekly Physical Activity level is greater than or equal to 3000MET-min/w

Moderate exercise group

Meet any of the following conditions:

1. All kinds of high-intensity physical activities of 20 min or more per day, for a total of 3 days or more

2. Various moderate-intensity and/or walking activities of 30 min or more per day for a total of 5 days or more

3. The Physical Activity of 3 intensities totals 5 days or more, and the total weekly Physical Activity level is greater than 600MET-min/w

Low exercise group

Failed to report any exercise, or the exercise level did not meet the medium and high grouping criteria