Abstract

This BriefTrends describes the temporal trends in the prevalence (%) of adults meeting muscle strengthening activity (MSA) guidelines from 2011 to 2019 in Montana.

1. Purpose

To examine the trends in the proportion of adults meeting muscle strengthening activity (MSA) guidelines, overall and by sex, in Montana.

2. Data Source

The 2011 (N=9,724), 2013 (N=9,116), 2015 (N=5,704), 2017 (N=5,612), and 2019 (N=6,049) cycles of the Behavioral Risk Factor Surveillance System (BRFSS).

3. Population

Noninstitutionalized adults 18+ years of age in Montana.

4. Variables

1) Meeting muscle strengthening activity (MSA) guidelines (participated in MSA exercises 2+ times per week), 2) Year (2011, 2013, 2015, 2017, 2019), and 3) sex.

5. Analysis

Prevalence (%) estimates of meeting MSA guidelines across Year, 95% confidence intervals (CIs) for prevalence estimates, and Mantel-Haenszel Chi-Square (χ²_MH) trend test. SAS Survey Procedures were used for estimates and CIs, version 9.4.

6. Findings

The prevalence of meeting MSA guidelines among adults in Montana increased from 30.2% (95% CI: 28.8-31.6) in 2011 to 39.7% (95% CI: 38.2-41.2) in 2019 (χ²_MH= 123.6, p<.001). This prevalence in males increased from 33.4% (95% CI: 31.2-35.6) in 2011 to 41.6% (95% CI: 39.5-43.7) in 2019 (χ²_MH= 60.7, p<.001). And in females increased from 27.0% (95% CI: 25.3-28.8) in 2011 to 37.8% (95% CI: 35.6-39.9) in 2019 (χ²_MH= 32.0, p<.001). Sex differences disappeared after 2013, indicating a closing gap trend in meeting MSA guidelines prevalence between sex groups.

References