Portal de investigação
Potassium Intake and Blood Pressure: A Dose-Response Meta-Analysis of Randomized Controlled Trials
Data de publicação:
Autores da FMUP
Participantes de fora da FMUP
- Filippini, T
- Naska, A
- Kasdagli, MI
- Torres, D
- Carvalho, C
- Moreira, P
- Malavolti, M
- Orsini, N
- Whelton, PK
- Vinceti, M
Unidades de investigação
Abstract
BACKGROUND: Epidemiologic studies, including trials, suggest an association between potassium intake and blood pressure (BP). However, the strength and shape of this relationship is uncertain. METHODS AND RESULTS: We performed a meta-analysis to explore the dose-response relationship between potassium supplementation and BP in randomized-controlled trials with a duration >= 4 weeks using the recently developed 1-stage cubic spline regression model. This model allows use of trials with at least 2 exposure categories. We identified 32 eligible trials. Most were conducted in adults with hypertension using a crossover design and potassium supplementation doses that ranged from 30 to 140 mmol/d. We observed a U-shaped relationship between 24-hour active and control arm differences in potassium excretion and BP levels, with weakening of the BP reduction effect above differences of 30 mmol/d and a BP increase above differences similar to 80 mmol/d. Achieved potassium excretion analysis also identified a U-shaped relationship. The BP-lowering effects of potassium supplementation were stronger in participants with hypertension and at higher levels of sodium intake. The BP increase with high potassium excretion was noted in participants with antihypertensive drug-treated hypertension but not in their untreated counterparts. CONCLUSIONS: We identified a nonlinear relationship between potassium intake and both systolic and diastolic BP, although estimates for BP effects of high potassium intakes should be interpreted with caution because of limited availability of trials. Our findings indicate an adequate intake of potassium is desirable to achieve a lower BP level but suggest excessive potassium supplementation should be avoided, particularly in specific subgroups.
Dados da publicação
- ISSN/ISSNe:
- 2047-9980, 2047-9980
- Tipo:
- Review
- Páginas:
- -
- Link para outro recurso:
- www.scopus.com
Journal of the American Heart Association Wiley-Blackwell Publishing Ltd
Citações Recebidas na Web of Science: 96
Citações Recebidas na Scopus: 157
Documentos
- Não há documentos
Filiações
Keywords
- blood pressure; dietary supplement; dose-response meta-analysis; potassium
Proyectos asociados
Tracking the acquisition of eating habits in children and its effects on behaviours related to appetite
Investigador Principal: Carla Maria de Moura Lopes
Estudo Clínico Académico . 2019
Citar a publicação
Filippini T,Naska A,Kasdagli MI,Torres D,Lopes C,Carvalho C,Moreira P,Malavolti M,Orsini N,Whelton PK,Vinceti M. Potassium Intake and Blood Pressure: A Dose-Response Meta-Analysis of Randomized Controlled Trials. J. Am. Heart Assoc. 2020. 9(12):e015719. IF:5,501. (1).
