Doubling of Water Intake Increases Daytime Blood Pressure and Reduces Vertigo in Healthy Subjects

Jormeus, Anders; Karlsson, Samuel; Dahlgren, Christina; Lindström, Torbjörn; Nyström, Fredrik

doi:10.3109/10641961003686450

Cited by 12 publications

(9 citation statements)

References 24 publications

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“…A systematic review demonstrated that water intake was associated with reduced energy intake and therefore obesity prevention [5]. Some clinical trials showed no significant effect of water consumption on body weight [24][25][26]; however, in a clinical trial, consumption of 500 mL water before meals led to a greater weight loss compared to a hypocaloric diet in middle-aged and older adults [6]. It must be kept in mind that findings from clinical trials cannot be generalized to the routine life because these interventions are conducted in short time with high doses.…”

Section: Discussionmentioning

confidence: 99%

Water intake and intra-meal fluid consumption in relation to general and abdominal obesity of Iranian adults

Salari-Moghaddam

Aslani

Saneei

et al. 2020

Nutr J

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Objective: The aim of this study was to examine the association between whole-day water intake and intra-meal fluid consumption and odds of general and abdominal obesity among adults. Methods: This cross-sectional study was conducted among 7958 adults in Isfahan, Iran. Daily water consumption was assessed through the use of a pre-tested questionnaire by asking questions about the average number of glasses of water consumed in a day. Intra-meal fluid consumption was also analysed. Data regarding height, weight and waist circumference were collected using a validated self-administered questionnaire. Obesity was defined as body mass index ≥30 kg/m 2 , and abdominal obesity was defined as waist circumference >88 cm for women and >102 cm for men. Results: After taking potential confounders into account, individuals who were taking more than eight glasses of water in a day had 78% greater odds of general obesity (OR: 1.78; 95% CI: 1.08-2.94) compared with those who were taking less than two glasses of water. Individuals with much water intake had no significant greater odds of abdominal obesity. Compared with those who were consuming less than a glass of intra-meal fluids, subjects with 1-2 glasses of fluids between meals had 34% greater odds of general obesity (OR: 1.34; 95% CI: 1.04-1.59). Although subjects with greater intra-meal fluid intake had greater odds of abdominal obesity in crude model, this association became non-significant after adjustment for potential confounders (comparing > 4 glasses vs. ≤1 glass: OR: 1.65; 95% CI: 0.81-3.34). Conclusions: We observed that taking more than eight glasses of water in a day and consuming 1-2 glasses of fluids between meals was associated with greater odds of general obesity.

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Section: Discussionmentioning

confidence: 99%

Water intake and intra-meal fluid consumption in relation to general and abdominal obesity of Iranian adults

Salari-Moghaddam

Aslani

Saneei

et al. 2020

Nutr J

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“…Water intake can acutely reduce heart rate and increase blood pressure in normotensive individuals, and this effect can last for up to 60 min [5,36]. Furthermore, Jormeus reported that the changes in blood pressure were the consequences of the amount of water per se, and not due to the potential confounders such as changes in salt intake [37]. Therefore, the increase in blood pressure in the isotonic beverage group was likely due to the better water retention and hydration status instead of the salt intake, and the slight changes in heart rate are to balance the effect of normal fluctuations in blood volume on blood pressure [5].…”

Section: Discussionmentioning

confidence: 99%

Impact of Isotonic Beverage on the Hydration Status of Healthy Chinese Adults in Air-Conditioned Environment

2017

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People living in tropical climates spend much of their time in confined air-conditioned spaces, performing normal daily activities. This study investigated the effect of distilled water (W) or isotonic beverage (IB) on the hydration status in subjects living under these conditions. In a randomized crossover design, forty-nine healthy male subjects either consumed beverage or IB over a period of 8 h (8 h) in a controlled air-conditioned environment. Blood, urine, and saliva samples were collected at baseline and after 8 h. Hydration status was assessed by body mass, urine output, blood and plasma volume, fluid retention, osmolality, electrolyte concentration and salivary flow rate. In the IB group, urine output (1862 ± 86 mL vs. 2104 ± 98 mL) was significantly lower and more fluids were retained (17% ± 3% vs. 7% ± 3%) as compared to W (p < 0.05) after 8 h. IB also resulted in body mass gain (0.14 ± 0.06 kg), while W led to body mass loss (−0.04 ± 0.05 kg) (p = 0.01). A significantly smaller drop in blood volume and lower free water clearance was observed in IB (−1.18% ± 0.43%; 0.55 ± 0.26 mL/min) compared to W (−2.11% ± 0.41%; 1.35 ± 0.24 mL/min) (p < 0.05). IB increased salivary flow rate (0.54 ± 0.05 g/min 0.62 ± 0.04 g/min). In indoor environments, performing routine activities and even without excessive sweating, isotonic beverages may be more effective at retaining fluids and maintaining hydration status by up to 10% compared to distilled water.

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“…Nossos resultados ratificam a premissa que a IA influencia as atividades hemodinâmicas e autonômicas cardiovasculares, alterando a resistência vascular periférica, pressão arterial, frequência cardíaca e atividade vagal cardíaca 14,16,22,25,[30][31][32][33][34] .…”

Section: Discussionunclassified

Ingestão De Água No Sistema Nervoso Autônomo: Uma Revisão Sistemática E Meta-Análise

Rocha

Ramos²,

Ricardo³

2016

Rev Bras Med Esporte

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RESUMOVerificar, por meio de uma revisão sistemática, o efeito da ingestão de água (IA) no sistema nervoso autônomo (SNA) e variáveis hemodinâmicas em indivíduos adultos. Foram analisados estudos publicados entre 2000 e 2015, tendo como referência a base de dados Medline via Pubmed, sendo utilizado na construção da frase de pesquisa o MeSH. Foram estabelecidos os seguintes critérios de inclusão: ensaios clínicos controlados e randomizados (ECCR) realizados em humanos, na língua inglesa. Como critério de exclusão: intervenções pouco claras, mal descritas ou inadequadas e na forma de resumos. Utilizou-se as seguintes variáveis para a seleção dos estudos: frequência cardíaca (FC), pressão arterial (PA), componente de alta frequência (AF) e resistência vascular periférica (RVP). Foi usada a sistematização PRISMA para a elaboração desta revisão e a realização de uma meta-análise com o objetivo de evidenciar matematicamente os resultados da frequência cardíaca após a ingestão de água em sete estudos que avaliaram esta variável. Fizeram parte desta revisão 10 ECCR envolvendo 246 indivíduos com idade entre 19 a 64 anos, sendo que 34,55% do sexo masculino. A maioria dos ECCR analisados apresentou alterações após a IA. As alterações comumente observadas foram: diminuição da FC (estatisticamente significativa p < 0,001), aumento da AF e RVP. Contudo, em relação à PA, os resultados demonstraram-se conflitantes, com estudos que evidenciaram aumento e outros que não observaram diferença significativa. Esta revisão evidencia os efeitos da IA no SNA, em especial na FC, AF e RVP, não obstante em relação às alterações hemodinâmicas expressas pela PA permanece ainda um óbice em relação à comunidade científica.Descritores: ingestão de líquidos, sistema nervoso autônomo, pressão arterial, frequência cardíaca, resistência vascular. ABSTRACT

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Doubling of Water Intake Increases Daytime Blood Pressure and Reduces Vertigo in Healthy Subjects

Cited by 12 publications

References 24 publications

Water intake and intra-meal fluid consumption in relation to general and abdominal obesity of Iranian adults

Water intake and intra-meal fluid consumption in relation to general and abdominal obesity of Iranian adults

Impact of Isotonic Beverage on the Hydration Status of Healthy Chinese Adults in Air-Conditioned Environment

Ingestão De Água No Sistema Nervoso Autônomo: Uma Revisão Sistemática E Meta-Análise

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