Fanny Petermann-Rocha1, Anne Sillars1, Rosemary Brown1, Lauren Sweeney1, Claudia Troncoso2, Antonio García-Hermoso3, Ana María Leiva4, María Adela Martínez5, Ximena Diaz-Martínez6, Felipe Poblete-Valderrama7, Alex Garrido-Mendez8, Ximena Cataldo9, José Iturra Gonzalez10, Carlos Salas11, José Lara12, Stuart R Gray1, Carlos Celis-Morales1. 1. 1BHF Glasgow Cardiovascular Research Centre,Institute of Cardiovascular and Medical Science,University of Glasgow,Glasgow G12 8TA,UK. 2. 3Centro de Investigación en Educación y Desarrollo (CIEDE-UCSC),Facultad de Medicina,Universidad Católica de la Santísima Concepción,Concepción,Chile. 3. 4Laboratory of Physical Activity Science,Sport and Health,Faculty of Medical Science,University of Santiago de Chile,Santiago,Chile. 4. 5Institute of Anatomy,Faculty of Medicine,University Austral of Chile,Valdivia,Chile. 5. 6Institute of Pharmacy,Faculty of Science,University Austral of Chile,Valdivia,Chile. 6. 7Quality of Life Research Group,Department of Science of Education,Faculty of Education and Humanity,University of Bio-Bio,Chillan,Chile. 7. 8School of Kinesiology,Faculty of Health,University Santo Tomás,Valdivia,Chile. 8. 9Departamento de Ciencias del Deporte y Acondicionamiento Físico,Facultad de Educación,Universidad Católica de la Santísima Concepción,Concepción,Chile. 9. 11School of Nutrition,University Autónoma,Santiago,Chile. 10. 12Unidad de Anatomía Normal,Universidad de Santiago de Chile,Santiago,Chile. 11. 13Department of Physical Education,Faculty of Education,University of Concepción,Concepción,Chile. 12. 14Department of Applied Sciences,Faculty of Health and Life Sciences,Northumbria University,Newcastle upon Tyne,UK.
Abstract
OBJECTIVE: The aim of the study was to determine the main factors (sociodemographic, anthropometric, lifestyle and health status) associated with high Na excretion in a representative population of Chile. DESIGN: Na excretion (g/d), a valid marker of Na intake, was determined by urine analysis and Tanaka's formulas. Blood pressure was measured by trained staff and derived from the mean of three readings recorded after 15 min rest. The associations of Na excretion with blood pressure and the primary correlates of high Na excretion were determined using logistic regression. SETTING: Chileans aged ≥15 years.ParticipantsParticipants (n 2913) from the Chilean National Health Survey 2009-2010. RESULTS: Individuals aged 25 years or over, those who were obese and those who had hypertension, diabetes or metabolic syndrome were more likely to have higher Na excretion. The odds for hypertension increased by 10·2 % per 0·4 g/d increment in Na excretion (OR=1·10; 95 % CI 1·06, 1·14; P < 0·0001). These findings were independent of major confounding factors. CONCLUSIONS: Age, sex, adiposity, sitting behaviours and existing co-morbidities such as diabetes were associated with higher Na excretion levels in the Chilean population. These findings could help policy makers to implement public health strategies tailored towards individuals who are more likely to consume high levels of dietary salt.
OBJECTIVE: The aim of the study was to determine the main factors (sociodemographic, anthropometric, lifestyle and health status) associated with high Na excretion in a representative population of Chile. DESIGN: Na excretion (g/d), a valid marker of Na intake, was determined by urine analysis and Tanaka's formulas. Blood pressure was measured by trained staff and derived from the mean of three readings recorded after 15 min rest. The associations of Na excretion with blood pressure and the primary correlates of high Na excretion were determined using logistic regression. SETTING: Chileans aged ≥15 years.ParticipantsParticipants (n 2913) from the Chilean National Health Survey 2009-2010. RESULTS: Individuals aged 25 years or over, those who were obese and those who had hypertension, diabetes or metabolic syndrome were more likely to have higher Na excretion. The odds for hypertension increased by 10·2 % per 0·4 g/d increment in Na excretion (OR=1·10; 95 % CI 1·06, 1·14; P &lt; 0·0001). These findings were independent of major confounding factors. CONCLUSIONS: Age, sex, adiposity, sitting behaviours and existing co-morbidities such as diabetes were associated with higher Na excretion levels in the Chilean population. These findings could help policy makers to implement public health strategies tailored towards individuals who are more likely to consume high levels of dietary salt.