Phase angle is associated with sarcopenic obesity in post-stroke patients

Area of Science:

• Gerontology
• Clinical Nutrition
• Rehabilitation Medicine

Background:

• Limited evidence exists on the association between bioimpedance analysis-derived phase angle and sarcopenic obesity.
• This study investigates this relationship in patients undergoing convalescent rehabilitation post-stroke.

Purpose of the Study:

• To examine the association between phase angle and sarcopenic obesity in post-stroke patients.
• To determine optimal phase angle cutoff values for predicting sarcopenic obesity in this population.

Main Methods:

• A cross-sectional study of hospitalized post-acute stroke patients.
• Phase angle measured by multifrequency bioimpedance analysis; sarcopenic obesity diagnosed using established criteria.
• Multiple linear regression and ROC curve analysis employed to assess associations and optimal cutoffs.

Main Results:

• A total of 760 patients were analyzed; sarcopenic obesity was present in 4.5% overall.
• Sarcopenic obesity and sarcopenia were significantly negatively associated with phase angle (p < 0.05).
• Optimal phase angle cutoff values for predicting sarcopenic obesity were 4.29° for men and 3.84° for women.

Conclusions:

• Phase angle is associated with sarcopenic obesity in post-stroke rehabilitation patients.
• Identified cutoff values (4.29° for men, 3.84° for women) offer practical prediction of sarcopenic obesity.
• Phase angle measurement provides a simple, useful tool for clinical prediction of sarcopenic obesity.