(HealthDay News) — Less than one-quarter of adults over 45 meet the muscle-strengthening recommendations set by the U.S. Department of Health and Human Services, according to a study published September 18 in the U.S. Centers for Disease Control and Prevention’s Preventing Chronic Disease.

Jesse Vezina, of Arizona State University in Phoenix, and colleagues analyzed data from the 2011 U.S. Behavioral Risk Factor Surveillance System, a telephone health survey conducted by the CDC. Participants answered questions about the type of physical activities they engage in and how often. They were also asked if they exercised in order to strengthen their muscles.

Of all those who answered the questions on muscle strengthening, about 24% said they met the government’s recommendations. Among those less likely than others to meet these guidelines were women, widows, those age ≥85, people who were obese, and Hispanics. Participants who didn’t graduate from high school were also less likely to meet U.S. strength-training recommendations.

The researchers concluded that interventions designed to encourage people to participate in strength training should target these high-risk groups.

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