Effect of Hypohydration on Muscle Endurance, Strength, Anaerobic Power and Capacity and Vertical Jumping Ability: A Meta-Analysis

Savoie, Félix-Antoine; Kenefick, Robert W.; Ely, Brett R.; Cheuvront, Samuel N.; Goulet, Eric

doi:10.1007/s40279-015-0349-0

Cited by 81 publications

(66 citation statements)

References 45 publications

(117 reference statements)

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“…Fluid deficit of 4% decreases performance, causes headaches, irritability, sleepiness and increases respiratory rate with increase in temperature among children [12]. Dehydration also impairs muscle endurance and decreases muscle strength [13]. The fluid depletion of more than 8% can cause death [14].…”

Section: Introductionmentioning

confidence: 99%

Public knowledge of dehydration and fluid intake practices: variation by participants’ characteristics

et al. 2018

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BackgroundDehydration results from a decrease in total body water content either due to less intake or more fluid loss. Common symptoms of dehydration are dry mouth/tongue, thirst, headache, and lethargy. The aim of this study was to assess knowledge of dehydration definition, symptoms, causes, prevention, water intake recommendations and water intake practices among people living in Riyadh, Saudi Arabia.MethodsA cross-sectional study using self-reported questionnaire was employed. Participants were invited during their visit to shopping malls. The shopping malls were selected based on geographical location covering east, west, north and southern part of the city. Self-filled questionnaires were distributed to 393 participants, using systematic sampling technique. Variables recorded included demographics, past medical history, knowledge of dehydration definition, symptoms, causes, prevention and daily water intake practices. Descriptive statistics were summarised as mean, standard deviation and proportions. Negative binomial model was used to identify the predictors of water intake. Analyses were performed using SAS version 9.4 (SAS Institute, Cary, NC, USA).ResultsOut of 393 participants, 273(70%) were Saudi, 209(53%) were female, average age was 32.32 ± 8.78 years. Majority 366(93%) had good knowledge of dehydration definition, 332(84%) for dehydration prevention, and 293(74%) of water intake recommendation. Top three recognized dehydration symptoms were: dry lips (87%), thirst (84%), dry tongue (76%) and recognized dehydration causes were: diarrhoea (81%), sweating (68%) and vomiting (62%). The less recognized symptoms were fatigue 176(44.78%), lack of focus 171(43.5%), headache/dizziness 160(40.71%), light headedness 117(29.7%), muscle weakness 98(24.94%), rapid breathing 90(22.9%), and muscle cramps 64(16.28%).The participants had reported an average of 5.39 ± 3.32 water glasses intake per day. The total volume of water intake was significantly different between males n = 184 (3.935 ± 2.10 l) and females n = 209 (3.461 ± 2.59 l) (p = 0.046). The participants’ weight status, intake of juice or tea were the significant predictors of more water intake.ConclusionThe participants displayed good knowledge of dehydration definition, prevention, and water intake recommendation. The participants also displayed good knowledge of the common symptoms, however knowledge was lacking for uncommon symptoms. Moreover, participants had reported adequate water intake, meeting the daily water intake recommendation of ≥3.7 l for men and ≥ 2.7 l for women.Electronic supplementary materialThe online version of this article (10.1186/s12889-018-6252-5) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Public knowledge of dehydration and fluid intake practices: variation by participants’ characteristics

et al. 2018

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“…Still, when data are combined, decrements in strength, power, and anaerobic endurance are consistently apparent in athletes who are more than 2% hypohydrated. 76,193 Most studies 193,194 that have addressed the influence of hypohydration on muscle function showed that a fluid deficit of 3% to 4% elicited a performance decrement. Anaerobic performance research related to hydration status is highly varied (eg, dehydrating protocol, performance outcome, recovery timing), 76 which makes it challenging to decipher the true mechanisms or specific levels of hypohydration that cause decrements.…”

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confidence: 99%

National Athletic Trainers' Association Position Statement: Fluid Replacement for the Physically Active

McDermott

Anderson

Armstrong

et al. 2017

Journal of Athletic Training

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Objective: To present evidence-based recommendations that promote optimized fluid-maintenance practices for physically active individuals.Background: Both a lack of adequate fluid replacement (hypohydration) and excessive intake (hyperhydration) can compromise athletic performance and increase health risks. Athletes need access to water to prevent hypohydration during physical activity but must be aware of the risks of overdrinking and hyponatremia. Drinking behavior can be modified by education, accessibility, experience, and palatability. This statement updates practical recommendations regarding fluidreplacement strategies for physically active individuals.Recommendations: Educate physically active people regarding the benefits of fluid replacement to promote performance and safety and the potential risks of both hypohydration and hyperhydration on health and physical performance. Quantify sweat rates for physically active individuals during exercise in various environments. Work with individuals to develop fluid-replacement practices that promote sufficient but not excessive hydration before, during, and after physical activity.

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“…In hypohydration without hyperthermia, decreasing stroke volume reduces a muscle’s ability to adapt to conditions [20], and it reduces muscular endurance, strength, and anaerobic muscle strength [21] through the effect on the cardiovascular system, muscle metabolism, buffering system, and the neuromuscular system [22]. During a sports activity, the purpose of drinking water is to keep the individual at an appropriate hydration level so that he/she does not lose more than 2% of body weight in terms of water and the individual’s weight does not increase until it is exposed to hypohydration and hyperhydration.…”

Section: Resultsmentioning

confidence: 99%

Water Intake from the Points of View of Rhazes and Avicenna

et al. 2019

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Owing to the effect of acute and chronic hypohydration on health and the lethal effects of hyperhydration, an appropriate amount of water intake is important for each individual. Traditional Iranian medicine (TIM) is a holistic system one of whose important parts deals with lifestyles and how to maintain health, including the amount of water intake for every person and the appropriate principles of drinking water. In this study, Avicenna’s Canon of Medicine, Rhazes’ Benefits of Food and Its Harmfulness, and conventional medical articles were reviewed to evaluate the amount of water intake for each person and the principles of drinking water. TIM has expressed an individualized difference in the amount of water intake in the form of temperament and the relationship between the appropriate time of drinking water with other daily activities. In this view, drinking water at the inappropriate time causes liver and gastrointestinal diseases; it can create the foundation for conducting new studies in the field of appropriate water intake and lifestyle changes to reduce malnutrition complications.

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Effect of Hypohydration on Muscle Endurance, Strength, Anaerobic Power and Capacity and Vertical Jumping Ability: A Meta-Analysis

Cited by 81 publications

References 45 publications

Public knowledge of dehydration and fluid intake practices: variation by participants’ characteristics

Public knowledge of dehydration and fluid intake practices: variation by participants’ characteristics

National Athletic Trainers' Association Position Statement: Fluid Replacement for the Physically Active

Water Intake from the Points of View of Rhazes and Avicenna

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