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- Ensaio Clínico NCT07649005
Interactive Effects of Sodium and Potassium on Vascular Health in Older Adults
Exploring the Interactive Effects of Sodium and Potassium Intake on Vascular Health in Older Adults
The goal of this clinical trial is to determine if a high potassium intake can counteract the harmful effects of excess sodium on endothelial function in older adults with no history of cardiometabolic disease. The main questions it aims to answer are:
- Can a high potassium intake attenuate dietary sodium-induced endothelial dysfunction in older adults.
- Do changes in endothelial function in response to alterations in sodium and potassium intake differ by sex.
Participants will participants will consume three controlled diets for 10 days each with a minimum 14-day washout between interventions. The order in which participants consume the diets will be randomized. The study diets will vary in sodium and potassium content. Measures of cardiovascular health (blood pressure, arterial stiffness, endothelial function) will be assessed at the end of each diet.
Visão geral do estudo
Status
Condições
Descrição detalhada
Tipo de estudo
Inscrição (Estimado)
Estágio
- Não aplicável
Contactos e Locais
Contato de estudo
- Nome: FSU Ann's College
- Número de telefone: 850-644-6685
Estude backup de contato
- Nome: Andrea Lobene
- Número de telefone: 850-644-1829
- E-mail: alobene@fsu.edu
Locais de estudo
-
-
Florida
-
Tallahassee, Florida, Estados Unidos, 32306
- Recrutamento
- Florida State University
-
Contato:
- Andrea Lobene
- Número de telefone: 850-644-1829
- E-mail: alobene@fsu.edu
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
- Adulto
- Adulto mais velho
Aceita Voluntários Saudáveis
Descrição
Inclusion Criteria:
- Adults ages 55-75 years
- At least one-year post-menopause (females)
- Willing and able to attend laboratory visits
Exclusion Criteria:
- BMI ≥35 kg/m2
- Seated blood pressure >135/85 mmHg
- Current diagnosis or history of cardiovascular disease, diabetes, renal disease, cancer, or major cardiovascular event (e.g. heart attack or stroke)
- Taking exogenous hormones or hormone replacement therapy
- Following a vegan or gluten free diet
- Significant weight loss (>10% of body weight) in the last 6 months, or actively trying to lose weight
- Current or recent use of a diuretic (within the past 6 months) (e.g. spironolactone, eplerenone)
- Current or recent use of a potassium binding medication (within the past 6 months)
- Current use of blood pressure lowering medications (e.g. ACE inhibitors, calcium channel blockers, diuretics, vasodilators, beta blockers, AngII receptor blockers)
- Current or recent use of the medication trimethoprim
- Elevated blood lipids (LDL cholesterol ≥190 mg/dL)
- Elevated serum potassium level (>5.1 mmol/L)
- Elevated BUN (>22 mg/dL)
- Elevated creatinine (>1.2 mg/dL)
- Low eGFR (<90 mL/min/1.73 m²)
- Current or recent use of tobacco, nicotine, or illicit drugs
- Radical hysterectomy or oophorectomy (females)
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Prevenção
- Alocação: Randomizado
- Modelo Intervencional: Atribuição cruzada
- Mascaramento: Triplo
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
|
Experimental: low Na/low K, high Na/low K, high Na/high K
Three 10-day controlled diets in randomized order, each varying in sodium and potassium content.
There is a minimum 2-week washout between diets.
|
On this intervention, participants will be given a diet that provides 2,000 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 4,700 mg K/day
|
|
Experimental: low Na/low K, high Na/high K, high Na/low K
Three 10-day controlled diets in randomized order, each varying in sodium and potassium content.
There is a minimum 2-week washout between diets.
|
On this intervention, participants will be given a diet that provides 2,000 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 4,700 mg K/day
|
|
Experimental: high Na/high K, low Na/low K, high Na/low K
Three 10-day controlled diets in randomized order, each varying in sodium and potassium content.
There is a minimum 2-week washout between diets.
|
On this intervention, participants will be given a diet that provides 2,000 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 4,700 mg K/day
|
|
Experimental: high Na/high K, high Na/low K, low Na/low K
Three 10-day controlled diets in randomized order, each varying in sodium and potassium content.
There is a minimum 2-week washout between diets.
|
On this intervention, participants will be given a diet that provides 2,000 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 4,700 mg K/day
|
|
Experimental: high Na/low K, low Na/low K, high Na/high K
Three 10-day controlled diets in randomized order, each varying in sodium and potassium content.
There is a minimum 2-week washout between diets.
|
On this intervention, participants will be given a diet that provides 2,000 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 4,700 mg K/day
|
|
Experimental: high Na/low K, high Na/high K, low Na/low K
Three 10-day controlled diets in randomized order, each varying in sodium and potassium content.
There is a minimum 2-week washout between diets.
|
On this intervention, participants will be given a diet that provides 2,000 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 2,000 mg K/day
On this intervention, participants will be given a diet that provides 4,700 mg Na/day and 4,700 mg K/day
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Endothelial function
Prazo: "Day 11" after each of the three 10-day dietary interventions
|
Brachial artery flow-mediated dilation as measured in % dilation
|
"Day 11" after each of the three 10-day dietary interventions
|
|
Blood pressure
Prazo: "Day 11" after each of the three 10-day dietary interventions
|
24-hour ambulatory blood pressure
|
"Day 11" after each of the three 10-day dietary interventions
|
|
Arterial stiffness
Prazo: "Day 11" after each of the three 10-day dietary interventions
|
Carotid-femoral pulse wave velocity
|
"Day 11" after each of the three 10-day dietary interventions
|
Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Andrea Lobene, Florida State University
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Conclusão Primária (Estimado)
Conclusão do estudo (Estimado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Outros números de identificação do estudo
- STUDY00006676
- UF-FSU CTSA Career Development (Número de outro subsídio/financiamento: UF-FSU Clinical and Translational Science Award)
Plano para dados de participantes individuais (IPD)
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