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U.S. Department of Health and Human Services Office of Disease Prevention and Health Promotion

Increase the proportion of adolescents who do enough aerobic and muscle-strengthening activity — PA‑08 Data Methodology and Measurement

On this page:  About the National Data  |  Methodology  |  History

About the National Data

Data

Data Source:  Youth Risk Behavior Surveillance System (YRBSS), CDC/NCCDPHP

Baseline: 20.0 percent of students in grades 9 through 12 were physically active for at least 60 minutes on all 7 days of the past week and participated in muscle-strengthening activity on 3 or more days of the past week in 2017

Target: 24.1 percent

Numerator
Number of students in grades 9 through 12 who were physically active for at least 60 minutes on all 7 days of the past 7 days and participated in muscle-strengthening activity on 3 or more days of the past 7 days.
Denominator
Number of students in grades 9 through 12.
Target-setting method
Percentage point improvement
Target-setting method details
Percentage point improvement from the baseline using Cohen's h effect size of 0.10.
1
Target-setting method justification
Trend data were evaluated for this objective, but it was not possible to project a target because the trend was moving away from the desired direction. A percentage point improvement was calculated using Cohen's h effect size of 0.1. This method was used because the Healthy People 2030 Workgroup Subject Matter Experts expected the data to move in the desired direction during the next decade.

Methodology

Questions used to obtain the national baseline data

(For additional information, please visit the data source page linked above.)

From the 2015 Youth Risk Behavior Surveillance System:

Numerator:
During the past 7 days, on how many days were you physically active for a total of at least 60 minutes per day? (Add up all the time you spend in any kind of physical activity that increased your heart rate and made you breathe hard some of the time.)
  1. 0 days
  2. 1 day
  3. 2 days
  4. 3 days
  5. 4 days
  6. 5 days
  7. 6 days
  8. 7 days
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?
  1. 0 days
  2. 1 day
  3. 2 days
  4. 3 days
  5. 4 days
  6. 5 days
  7. 6 days
  8. 7 days

History

Comparable HP2020 objective
Retained, which includes core objectives that are continuing from Healthy People 2020 with no change in measurement.
Revision History
Revised. 

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%.