Water-induced hyperhydration increases total body water to a greater extent than glycerol-induced hyperhydration: a case study of a trained triathlete.

Abstract:

:Glycerol-induced hyperhydration (GIH) prior to endurance exercise is a strategy that is increasingly used by athletes. Compared with water-induced hyperhydration (WIH), GIH has been shown to reduce diuresis, thereby increasing total body water (TBW). It has never been demonstrated that WIH proved to be more efficient than GIH for increasing TBW. Therefore, we report the case of a trained triathlete in whom WIH, compared with GIH, increased TBW during a 110-min hydration protocol. On two separate days the subject ingested, in a randomized double blind fashion, either 26 ml.kg(-1) body mass (BM) of water or 26 ml.kg(-1) BM of water with 1.2 g glycerol.kg(-1) BM. Compared with GIH, WIH increased TBW by an additional 511 ml. It is proposed that WIH was effective in decreasing urine output and, therefore, in augmenting TBW, because the water ingested during this treatment was integrated into the body fluid pools relatively more slowly than that ingested during GIH. Practically, this finding implies that it could thus be possible for researchers and athletes to find out that on occasion WIH increases TBW more than GIH over a period of hydration of 2 h. :Dayanıklılık egzersizi öncesi gliserol ile oluşturulan hiperhidrasyon (GIH) atletler tarafından kullanımı artan bir stratejidir. Su ile oluşturulan hiperhidrasyon (WIH) ile karşılaştırıldığında GIH'in diürezi azaltarak tplam vücut suyunu (TBW) artırdığı gösterilmiştir. TBW'yi artırmak için WIH'in GIH'den çok daha etkili olduğu gösterilememiştir. Bundan dolayı GIH ile karşılaştırıldığında WIH ile 110 dak hidrasyon protokolü ile artmış TBW antrenmanlı bir triatlet olgusu ile sunulmaktadır. Denek, farklı iki günde rastgele çift kör yöntemi ile 26 ml.kg-1 vücut kitlesi (BM) için su veya 26 ml.kg-1 BM için su ile birlikte 1.2 g glycerol.kg-1 BM aldı.GIH ile karşılaştırıldığında WIH TBW'da 511 ml ek bir artış sağladı. TBW değerlendirildiğinde WIH'in idrar çıkışını azaltmakta etkili olduğu (bu uygulama sırasında alının su vücut sıvı havuzları ile relatif olarak GIH alımından daha yavaş bütünleştiği için) düşünülmektedir. Pratik olarak bu bulgular araştırmacılar ve sporcular için 2 saati aşan bir hidrasyon dönemi için WIH'in GIH'den daha fazla TBW artırdığı olasılığını işaret etmektedir.

journal_name

J Sports Sci Med

authors

Goulet E,Labrecque S,Mélançon MO,Royer D

subject

Has Abstract

pub_date

2002-09-01 00:00:00

pages

96-102

issue

3

issn

1303-2968

journal_volume

1

pub_type

杂志文章
  • Both Unopposed and Opposed Judo Tasks are Suitable for Analyzing Changes in Lateral Preference.

    abstract::Judo coaches aim to develop left-handed techniques in right-handed judoka due to a potential frequency-dependent strategic advantage during competition. Thus, easily completed tasks are needed to track the progression of the lateral preference index (percentage as right-handed actions). Thirty naïve volunteers perform...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章,随机对照试验

    doi:

    authors: Mayo X,Iglesias-Soler E,Dopico-Calvo X

    更新日期:2019-06-01 00:00:00

  • Effects of functional electric stimulation cycle ergometry training on lower limb musculature in acute sci individuals.

    abstract::The purpose of this study was to compare three different intervals for a between sets rest period during a common isokinetic knee extension strength-testing protocol of twenty older Brazilian men (66.30 ± 3.92 yrs). The volunteers underwent unilateral knee extension (Biodex System 3) testing to determine their individ...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Demchak TJ,Linderman JK,Mysiw WJ,Jackson R,Suun J,Devor ST

    更新日期:2005-09-01 00:00:00

  • Consistency in acceleration patterns of football players with different skill levels.

    abstract::The aims of the present study were to compare the consistency in the lower limb acceleration patterns during inside and instep kicks performed by players with different skill levels, and to investigate the correlation between subjective rating scores for skill level relative to their kicking performance and knee accel...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Arpinar-Avsar P,Soylu AR

    更新日期:2010-09-01 00:00:00

  • Criterion-Related Validity of the 20-M Shuttle Run Test for Estimating Cardiorespiratory Fitness: A Meta-Analysis.

    abstract::The main purpose of the present meta-analysis was to examine the criterion-related validity of the 20-m shuttle run test for estimating cardiorespiratory fitness. Relevant studies were searched from twelve electronic databases up to December 2014, as well as from several alternative modes of searching. The Hunter-Schm...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章,评审

    doi:

    authors: Mayorga-Vega D,Aguilar-Soto P,Viciana J

    更新日期:2015-08-11 00:00:00

  • Low handicap golfers generate more torque at the shoe-natural grass interface when using a driver.

    abstract::The aim was to determine the rotational torque occurring at the shoe-natural grass interface during golf swing performance with different clubs, and to determine the influence of handicap and golf shoe design. Twenty-four golfers (8 low 0-7; 8 medium 8-14; and 8 high 15+) performed 5 shots with a driver, 3-iron and 7-...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Worsfold P,Smith NA,Dyson RJ

    更新日期:2008-09-01 00:00:00

  • Identification of placebo responsive participants in 40km laboratory cycling performance.

    abstract::The placebo effect, a positive outcome resulting from the belief that a beneficial treatment has been received, is widely acknowledged but little understood. It has been suggested that placebo responsiveness, the degree to which an individual will respond to a placebo, might vary in the population. The study aimed to ...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Beedie CJ,Foad AJ,Coleman DA

    更新日期:2008-03-01 00:00:00

  • Longitudinal Age-Related Morphological and Physiological Changes in Adolescent Male Basketball Players.

    abstract::This study aimed to examine longitudinal age-related changes in muscle morphology and jump and sprint performances of youth athletes. The subjects of this longitudinal study were 41 youth male basketball players who were assigned to late, mid, and early groups based on differences regarding the estimated age at peak h...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Sekine Y,Hoshikawa S,Hirose N

    更新日期:2019-11-19 00:00:00

  • Notational Analysis of European, World, and Olympic BMX Cycling Races.

    abstract::The objectives of this study were 1) to describe the technical requirements of different tracks where classifying points are disputed for the Olympics as the European continent tracks (E), world championship competitions tracks (W), and Olympic Games track - Beijing, 2008- (O); and 2) to compare and establish differen...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Mateo-March M,Blasco-Lafarga C,Doran D,Romero-Rodríguez RC,Zabala M

    更新日期:2012-09-01 00:00:00

  • Effect of intermittent sub-maximal exercise on percent body fat using leg-to-leg bioelectrical impedance analysis in children.

    abstract::The purpose of this investigation was to determine the effect of intermittent sub-maximal exercise on percent body fat (%BF) estimated by leg-to-leg bioelectrical impedance analysis (LBIA) in children. Fifty-nine children (29 girls; 30 boys) mean age 9.0 ± 1.3 years participated in this study. LBIA measured %BF values...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: L Andreacci J,B Dixon C,Ledezma C,L Goss F

    更新日期:2006-09-01 00:00:00

  • Effect of a pre-workout energy supplement on acute multi-joint resistance exercise.

    abstract::The effect of a pre-workout energy supplement on acute multi- joint resistance exercise was examined in eight resistance-trained college-age men. Subjects were randomly provided either a placebo (P) or a supplement (S: containing caffeine, taurine, glucuronolactone, creatine, β-alanine, and the amino acids; leucine, i...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Gonzalez AM,Walsh AL,Ratamess NA,Kang J,Hoffman JR

    更新日期:2011-06-01 00:00:00

  • Backstroke technical characterization of 11-13 year-old swimmers.

    abstract::The aim of this study was to characterize the backstroke swimming technique of 11-13 year-old swimmers when performing at very high intensity. A sample of 114 swimmers was divided into four groups regarding maturational and gender effect, who performed 25- m backstroke swimming at 50-m pace. Using two underwater camer...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Silva AF,Figueiredo P,Seifert L,Soares S,Vilas-Boas JP,Fernandes RJ

    更新日期:2013-12-01 00:00:00

  • High altitude and free radicals.

    abstract::High altitude exposure results in decreased oxygen pressure and an increased formation of reactive oxygen and nitrogen species (RONS), which is often associated with increases in oxidative damage to lipids, proteins and DNA. Exposure to high altitude appears to decrease the activity and effectiveness of antioxidant en...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章,评审

    doi:

    authors: Bakonyi T,Radak Z

    更新日期:2004-06-01 00:00:00

  • Effects of the Drop-set and Reverse Drop-set Methods on the Muscle Activity and Intramuscular Oxygenation of the Triceps Brachii among Trained and Untrained Individuals.

    abstract::Influence of different load exercise to muscle activity during subsequent exercise with 75% of one repetition maximum (RM) load among trained and untrained individuals was verified. Resistance-trained men who were involved in resistance training (n = 16) and healthy young men who did not exercise regularly (n = 16) we...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Goto M,Nirengi S,Kurosawa Y,Nagano A,Hamaoka T

    更新日期:2016-12-01 00:00:00

  • Leg strength and lean mass symmetry influences kicking performance in Australian football.

    abstract::Differential loading patterns during game-based participation may produce or exacerbate strength imbalances between the lower limbs. It is currently unknown whether such imbalances are functionally beneficial or detrimental to performance. This study assessed the influence of lower limb strength and lean mass symmetry...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Hart NH,Nimphius S,Spiteri T,Newton RU

    更新日期:2014-01-20 00:00:00

  • Influence of Tennis Racquet Kinematics on Ball Topspin Angular Velocity and Accuracy during the Forehand Groundstroke.

    abstract::Forehand groundstroke effectiveness is important for tennis success. Ball topspin angular velocity (TAV) and accuracy are important for forehand groundstroke effectiveness, and have been extensively studied, previously; despite previous, quality studies, it was unclear whether certain racquet kinematics relate to ball...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Kwon S,Pfister R,Hager RL,Hunter I,Seeley MK

    更新日期:2017-12-01 00:00:00

  • Contralateral Effects After Unilateral Strength Training: A Meta-Analysis Comparing Training Loads.

    abstract::There is solid evidence on the cross-training phenomenon, but the training load required to achieve it has yet to be established. The aim of this meta-analysis was to deduce which unilateral strength training load (duration, frequency, intensity, rest and type) would enable the biggest strength increases to be obtaine...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章,评审

    doi:

    authors: Cirer-Sastre R,Beltrán-Garrido JV,Corbi F

    更新日期:2017-06-01 00:00:00

  • Strength Performance Assessment in a Simulated Men's Gymnastics Still Rings Cross.

    abstract::Athletes in sports such as the gymnastics who perform the still rings cross position are disadvantaged due to a lack of objective and convenient measurement methods. The gymnastics "cross "is a held isometric strength position considered fundamental to all still rings athletes. The purpose of this investigation was to...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Dunlavy JK,Sands WA,McNeal JR,Stone MH,Smith SL,Jemni M,Haff GG

    更新日期:2007-03-01 00:00:00

  • The impact of short term supervised and home-based walking programmes on heart rate variability in patients with peripheral arterial disease.

    abstract::The aims of the study were to determine whether heart rate variability (HRV) measured at rest and during exercise could be altered by an exercise training programme designed to increase walking performance in patients with peripheral arterial disease. Forty-four volunteers were randomised into 12 weeks of either: supe...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Sandercock GR,Hodges LD,Das SK,Brodie DA

    更新日期:2007-12-01 00:00:00

  • Normative Reference Values and International Comparisons for the 20-Metre Shuttle Run Test: Analysis of 69,960 Test Results among Chinese Children and Youth.

    abstract::There is increasing evidence that cardiorespiratory endurance (CRE) is declining among Chinese children and youth. The 20-meter shuttle run test (20-m SRT) is considered the most effective and widely used field-based measurement of CRE for children and youth worldwide. However, there have been few attempts to set 20-m...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Zhang F,Yin X,Bi C,Li Y,Sun Y,Zhang T,Yang X,Li M,Liu Y,Cao J,Yang T,Guo Y,Song G

    更新日期:2020-08-13 00:00:00

  • The Effect of 400 µg Inhaled Salbutamol on 3 km Time Trial Performance in a Low Humidity Environment.

    abstract::The Objectives of the study were to investigate whether 400 µg inhaled salbutamol influences 3 km running time-trial performance and lung function in eucapnic voluntary hyperpnoea positive (EVH+ve) and negative (EVH-ve) individuals. Fourteen male participants (22.4 ± 1.6yrs; 76.4 ± 8.7kg; 1.80 ± 0.07 m); (7 EVH+ve; 7 ...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Molphy J,Dickinson JW,Chester NJ,Loosemore M,Whyte G

    更新日期:2017-12-01 00:00:00

  • Reliability and Validity of a New Test of Change-of-Direction Speed for Field-Based Sports: the Change-of-Direction and Acceleration Test (CODAT).

    abstract::Field sport coaches must use reliable and valid tests to assess change-of-direction speed in their athletes. Few tests feature linear sprinting with acute change- of-direction maneuvers. The Change-of-Direction and Acceleration Test (CODAT) was designed to assess field sport change-of-direction speed, and includes a l...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Lockie RG,Schultz AB,Callaghan SJ,Jeffriess MD,Berry SP

    更新日期:2013-03-01 00:00:00

  • Big Five Personality Traits and Eating Attitudes in Intensively Training Dancers: The Mediating Role of Internalized Thinness Norms.

    abstract::Dancers are at high risk of developing disordered eating attitudes, notably because of internalized thinness norms. Although the big five personality traits have been shown to be associated with eating attitudes in daily life, in dancers where eating issues and thinness norms internalization could be salient little is...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Scoffier-Mériaux S,Falzon C,Lewton-Brain P,Filaire E,d'Arripe-Longueville F

    更新日期:2015-08-11 00:00:00

  • sEMG during Whole-Body Vibration Contains Motion Artifacts and Reflex Activity.

    abstract::The purpose of this study was to determine whether the excessive spikes observed in the surface electromyography (sEMG) spectrum recorded during whole-body vibration (WBV) exercises contain motion artifacts and/or reflex activity. The occurrence of motion artifacts was tested by electrical recordings of the patella. T...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Lienhard K,Cabasson A,Meste O,Colson SS

    更新日期:2015-03-01 00:00:00

  • Short Durations of Static Stretching when Combined with Dynamic Stretching do not Impair Repeated Sprints and Agility.

    abstract::This study aimed to compare the effect of different static stretching durations followed by dynamic stretching on repeated sprint ability (RSA) and change of direction (COD). Twenty-five participants performed the RSA and COD tests in a randomized order. After a 5 min aerobic warm up, participants performed one of the...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Wong del P,Chaouachi A,Lau PW,Behm DG

    更新日期:2011-06-01 00:00:00

  • Oxygen cost during treadmill walking with hip and knee immobilised.

    abstract::The aim of this study was to determine the effect of immobilising the knee and hip on the oxygen cost (ml·kg(-1)·min(-1)) to velocity relationship during treadmill walking. The study was a prospective experimental conducted in a Rehabilitation centre. Ten healthy individuals, five men and five women, with no gait abno...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Elsworth C,Dawes H,Collett J,Howells K,Ramsbottom R,Izadi H,Sackley C

    更新日期:2006-12-15 00:00:00

  • Effects of acute eccentric contractions on rat ankle joint stiffness.

    abstract::The sensation of joint stiffness is frequently observed after eccentric contractions (ECs) in human, but the joint stiffness of animals after ECs has not been examined previously. This study tested whether a bout of ECs affects rat ankle joint stiffness. We also evaluate muscle passive tension in the rat hindlimb to e...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Eisuke O,Naokata I,Koichi N

    更新日期:2007-12-01 00:00:00

  • Analysis of motivational profiles of satisfaction and importance of physical education in high school adolescents.

    abstract::The purpose of this study was to analyze the motivational profiles of satisfaction with and importance of physical education in high school students and its relation with gender and the practice of sport. The sample comprised 2002 students aged from 12 to 19 who completed the Sport Motivation Scale (Núñez et al., 2006...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Granero-Gallegos A,Baena-Extremera A,Pérez-Quero FJ,Ortiz-Camacho MM,Bracho-Amador C

    更新日期:2012-12-01 00:00:00

  • Acute differences in foot strike and spatiotemporal variables for shod, barefoot or minimalist male runners.

    abstract::This study compared stride length, stride frequency, contact time, flight time and foot-strike patterns (FSP) when running barefoot, and in minimalist and conventional running shoes. Habitually shod male athletes (n = 14; age 25 ± 6 yr; competitive running experience 8 ± 3 yr) completed a randomised order of 6 by 4-mi...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: McCallion C,Donne B,Fleming N,Blanksby B

    更新日期:2014-05-01 00:00:00

  • An Analysis of Ten Years of the Four Grand Slam Men's Singles Data for Lack of Independence of Set Outcomes.

    abstract::The objective of this paper is to use data from the highest level in men's tennis to assess whether there is any evidence to reject the hypothesis that the two players in a match have a constant probability of winning each set in the match. The data consists of all 4883 matches of grand slam men's singles over a 10 ye...

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Pollard G,Cross R,Meyer D

    更新日期:2006-12-15 00:00:00

  • What is the Safest Sprint Starting Position for American Football Players?

    abstract::The main objective of this study was to perform a biomechanical analysis of three different sprint start patterns to determine the safest position in term of neck injury and Sport-Related Concussion (SRC). The second objective was to collect data on the learning process effect between football players and non-players....

    journal_title:Journal of sports science & medicine

    pub_type: 杂志文章

    doi:

    authors: Bonnechere B,Beyer B,Rooze M,Sint JS

    更新日期:2014-05-01 00:00:00