Increase the proportion of adults who do enough muscle-strengthening activity — PA‑04 Data Methodology and Measurement

About the National Data


Baseline: 31.9 percent of adults aged 18 years and over performed muscle-strengthening activities on 2 or more days of the week in 2020

Target: 36.6 percent

Number of adults aged 18 years and over who report doing physical activities specifically designed to strengthen muscles at least twice per week.
Number of adults aged 18 years and over.
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.
Target-setting method justification
Trend data were not available due to 2019 NHIS redesign. A percentage point improvement was calculated using Cohen's h effect size of 0.1. This method was used because it was a statistically significant improvement from the baseline and the Healthy People 2030 Workgroup Subject Matter Experts expected the data to move in the desired direction during the next decade.


Methodology notes

For this indicator, adults were classified as doing strengthening activities if they responded that they did these activities 2 to 28 times per week.


Comparable HP2020 objective
Modified, which includes core objectives that are continuing from HP2020 but underwent a change in measurement.
Changes between HP2020 and HP2030
This objective differs from Healthy People 2020 objective PA-2.3 in that objective PA-04 was changed due to 2019 National Health Interview Survey (NHIS) redesign. The change in the 2020 baseline estimate is significantly different and does not align with previous years trend.
Revision History

In 2022, this objective was revised due to the 2019 NHIS redesign. The baseline was revised from 27.6% in 2018 to 31.9% in 2020. The target setting method was changed from projection to percentage point improvement. The target was revised from 32.1% to 36.6% using the new target setting method