Meeting the Aerobic and Muscle-Strengthening Physical Activity Guidelines Among Older US Adults, National Health Interview Survey 1998-2018

The Physical Activity Guidelines for Americans, second edition, recommends older adults participate in >= 150 minutes per week of moderate-intensity equivalent aerobic activity and >= 2 days per week of muscle-strengthening activity. We estimated prevalence and trends of meeting the guidelines among US adults aged >= 65 years from 1998 to 2018. Using the 1998-2018 National Health Interview Survey, we estimated the prevalence of meeting aerobic, muscle-strengthening, and combined physical activity guidelines stratified by age group, sex, race and ethnicity, and education level. Within age groups, we calculated prevalence differences by sociodemographic categories. Prevalence of meeting each guideline increased for all age groups and most sociodemographic subgroups. The increased magnitude of meeting the combined guideline from 1998-2000 to 2016-2018 differed across levels of educational attainment for most age groups. Despite increasing over time, the prevalence among older adults of meeting physical activity guidelines remains low (range for combined guideline: 7.2%-17.2%).