On this page: About the National Data | Methodology | History
About the National Data
Data
Baseline: 51.1 percent of students in grades 9 through 12 participated in muscle-strengthening activity on 3 or more days of the past week in 2017
Target: 56.1 percent
Methodology
Questions used to obtain the national baseline data
From the 2015 Youth Risk Behavior Surveillance System:
Numerator:
During the past 7 days, on how many days did you do exercises to strengthen or tone your muscles, such as push-ups, sit-ups, or weight lifting?- 0 days
- 1 day
- 2 days
- 3 days
- 4 days
- 5 days
- 6 days
- 7 days
History
In 2024, the baseline race/ethnicity data were revised at the request of the data provider.
1. Effect size h=0.1 was chosen to correspond with 10% improvement from a baseline of 50%.