Muscle quality is negatively related to hypertension prevalence in adults: Results from NHANES 2011-2014.

Abstract

Resistance training could counter hypertension and improve muscle quality (MQ), but current evidence about the correlation between MQ and hypertension is limited. The authors aimed to explore this correlation using the data of participants aged 20-59 from NHANES 2011-2014 via a cross-sectional study. The MQ was quantified as handgrip strength (kg)/lean soft tissue mass (kg) of the dominant arm. Weighted multivariate logistic regression models were mainly utilized to investigate the MQ-hypertension association; linear trend tests and subgroup analysis were also conducted. Moreover, the authors employed weighted multivariate linear regression models to uncover the association between blood pressure (BP) and MQ. Four thousand four hundred and sixty-nine individuals were enrolled, and 1167 were hypertensive. Hypertensive participants had a lower MQ than normotensive participants. In the totally adjusted model, each unit elevation in MQ was related to a 7% reduction in hypertension prevalence (p=.002). There was a decreasing trend in hypertension prevalence and in systolic BP as the MQ increased from the bottom to the top quartile across all three models (p for trend ≤.01), with a 28% difference (OR: 0.72, 95% CI: 0.54, 0.95) in hypertension prevalence and a 1.88mm Hg (95% CI: -3.56, -0.20) difference in SBP between the top and bottom quartiles in the fully adjusted model. Subgroup analysis further confirmed the MQ-hypertension inverse association. In conclusions, the MQ was negatively associated with hypertension prevalence and systolic BP, which suggests the MQ may be a protective factor for hypertension and need to be improved.