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Comparison of glycerol and water hydration regimens on tennis-related performance
To compare glycerol and water hyperhydration and rehydration on tennis related skill and agility performance. Eleven male subjects completed two counter-balanced, double-blind trials. Each trial consisted of three phases: 1). hyperhydration with or without glycerol (1.0 g.kg/(-1)) over 150 min, 2)....
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| Published in: | Medicine and science in sports and exercise 2003, Vol.35 (1), p.150-156 |
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| cites | cdi_FETCH-LOGICAL-c422t-a9cb63c1f2e3649e4f55f680f2affb7afcc249cd8ea0fcaf6cf4e052d58169903 |
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| container_title | Medicine and science in sports and exercise |
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| creator | MAGAL, Meir WEBSTER, Michael J SISTRUNK, Lucille E WHITEHEAD, Malcolm T EVANS, Ronald K BOYD, Joseph C |
| description | To compare glycerol and water hyperhydration and rehydration on tennis related skill and agility performance.
Eleven male subjects completed two counter-balanced, double-blind trials. Each trial consisted of three phases: 1). hyperhydration with or without glycerol (1.0 g.kg/(-1)) over 150 min, 2). 120 min of exercise-induced dehydration (EID), and 3) rehydration with or without glycerol (0.5 g.kg(-1)) over 90 min. After each phase, subjects performed 5- and 10-m sprint tests, a repeated-effort agility test, and tennis skill tests.
Glycerol (G) hyperhydration significantly increased fluid retention by approximately 900 mL over the placebo (P) (P |
| doi_str_mv | 10.1097/00005768-200301000-00023 |
| format | article |
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Eleven male subjects completed two counter-balanced, double-blind trials. Each trial consisted of three phases: 1). hyperhydration with or without glycerol (1.0 g.kg/(-1)) over 150 min, 2). 120 min of exercise-induced dehydration (EID), and 3) rehydration with or without glycerol (0.5 g.kg(-1)) over 90 min. After each phase, subjects performed 5- and 10-m sprint tests, a repeated-effort agility test, and tennis skill tests.
Glycerol (G) hyperhydration significantly increased fluid retention by approximately 900 mL over the placebo (P) (P<or= 0.05). After EID, body weight was reduced in both groups but was not significantly different between groups (G: -2.71 +/- 0.08, P: -2.67 +/- 0.09%). At the end of the rehydration phase, PV was significantly greater in the G trial than in the P trial, and the G trial resulted in a significantly greater fluid retention of approximately 700 mL over the P trial ( P<or= 0.05). Although the magnitude of hypohydration was modest (<3%), sprint times were significantly slower after the EID ( P<or= 0.05) compared with post hyperhydration and post rehydration but were not significantly different between trials. No significant difference existed between groups and across time for the repeated effort agility tests and groundstrokes and serve tests.
The data demonstrate that relatively modest hypohydration ( approximately 2.7%) as a result of EID, significantly slows 5- and 10-m sprint times. Furthermore, although the glycerol hydration regimen provided a better hydration status than the placebo hydration regimen, no performance benefits were observed.</description><identifier>ISSN: 0195-9131</identifier><identifier>EISSN: 1530-0315</identifier><identifier>DOI: 10.1097/00005768-200301000-00023</identifier><identifier>PMID: 12544649</identifier><identifier>CODEN: MSPEDA</identifier><language>eng</language><publisher>Hagerstown, MD: Lippincott Williams & Wilkins</publisher><subject>Adult ; Biological and medical sciences ; Cross-Over Studies ; Dehydration - prevention & control ; Double-Blind Method ; Fundamental and applied biological sciences. Psychology ; Glycerol - therapeutic use ; Humans ; Male ; Metabolisms and neurohumoral controls ; Plasma Volume ; Rehydration Solutions ; Running - physiology ; Space life sciences ; Task Performance and Analysis ; Tennis - physiology ; Vertebrates: anatomy and physiology, studies on body, several organs or systems ; Water ; Water and mineral metabolism. Osmoregulation. Acidobasic balance</subject><ispartof>Medicine and science in sports and exercise, 2003, Vol.35 (1), p.150-156</ispartof><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-a9cb63c1f2e3649e4f55f680f2affb7afcc249cd8ea0fcaf6cf4e052d58169903</citedby><cites>FETCH-LOGICAL-c422t-a9cb63c1f2e3649e4f55f680f2affb7afcc249cd8ea0fcaf6cf4e052d58169903</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4021,27921,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14470205$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12544649$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>MAGAL, Meir</creatorcontrib><creatorcontrib>WEBSTER, Michael J</creatorcontrib><creatorcontrib>SISTRUNK, Lucille E</creatorcontrib><creatorcontrib>WHITEHEAD, Malcolm T</creatorcontrib><creatorcontrib>EVANS, Ronald K</creatorcontrib><creatorcontrib>BOYD, Joseph C</creatorcontrib><title>Comparison of glycerol and water hydration regimens on tennis-related performance</title><title>Medicine and science in sports and exercise</title><addtitle>Med Sci Sports Exerc</addtitle><description>To compare glycerol and water hyperhydration and rehydration on tennis related skill and agility performance.
Eleven male subjects completed two counter-balanced, double-blind trials. Each trial consisted of three phases: 1). hyperhydration with or without glycerol (1.0 g.kg/(-1)) over 150 min, 2). 120 min of exercise-induced dehydration (EID), and 3) rehydration with or without glycerol (0.5 g.kg(-1)) over 90 min. After each phase, subjects performed 5- and 10-m sprint tests, a repeated-effort agility test, and tennis skill tests.
Glycerol (G) hyperhydration significantly increased fluid retention by approximately 900 mL over the placebo (P) (P<or= 0.05). After EID, body weight was reduced in both groups but was not significantly different between groups (G: -2.71 +/- 0.08, P: -2.67 +/- 0.09%). At the end of the rehydration phase, PV was significantly greater in the G trial than in the P trial, and the G trial resulted in a significantly greater fluid retention of approximately 700 mL over the P trial ( P<or= 0.05). Although the magnitude of hypohydration was modest (<3%), sprint times were significantly slower after the EID ( P<or= 0.05) compared with post hyperhydration and post rehydration but were not significantly different between trials. No significant difference existed between groups and across time for the repeated effort agility tests and groundstrokes and serve tests.
The data demonstrate that relatively modest hypohydration ( approximately 2.7%) as a result of EID, significantly slows 5- and 10-m sprint times. Furthermore, although the glycerol hydration regimen provided a better hydration status than the placebo hydration regimen, no performance benefits were observed.</description><subject>Adult</subject><subject>Biological and medical sciences</subject><subject>Cross-Over Studies</subject><subject>Dehydration - prevention & control</subject><subject>Double-Blind Method</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Glycerol - therapeutic use</subject><subject>Humans</subject><subject>Male</subject><subject>Metabolisms and neurohumoral controls</subject><subject>Plasma Volume</subject><subject>Rehydration Solutions</subject><subject>Running - physiology</subject><subject>Space life sciences</subject><subject>Task Performance and Analysis</subject><subject>Tennis - physiology</subject><subject>Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><subject>Water</subject><subject>Water and mineral metabolism. Osmoregulation. Acidobasic balance</subject><issn>0195-9131</issn><issn>1530-0315</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkN1LwzAQwIMobk7_BemLvlVz-WrzKMMvGIigzyVLL7PSNjXpkP33RjfdowfhcuR3ueNHSAb0CqgurmkKWagyZ5RyCqnK02H8gExB8lRwkIdkSkHLXAOHCTmJ8T0hBedwTCbApBBK6Cl5nvtuMKGJvs-8y1btxmLwbWb6Ovs0I4bsbVMHMzbpPeCq6bCPWbqP2PdNzAO2CaqzAYPzoTO9xVNy5Ewb8WyXZ-T17vZl_pAvnu4f5zeL3ArGxtxou1TcgmPI0yYonJROldQx49yyMM5aJrStSzTUWeOUdQKpZLUsQWlN-Yxcbv8dgv9YYxyrrokW29b06NexKpguBEDxLwilUkCZTGC5BW3wMQZ01RCazoRNBbT69l79eq_-vFc_3lPr-W7GetlhvW_ciU7AxQ4w0ZrWhaSqiXtOiIIyKvkXsu-L5g</recordid><startdate>2003</startdate><enddate>2003</enddate><creator>MAGAL, Meir</creator><creator>WEBSTER, Michael J</creator><creator>SISTRUNK, Lucille E</creator><creator>WHITEHEAD, Malcolm T</creator><creator>EVANS, Ronald K</creator><creator>BOYD, Joseph C</creator><general>Lippincott Williams & Wilkins</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TS</scope><scope>7X8</scope></search><sort><creationdate>2003</creationdate><title>Comparison of glycerol and water hydration regimens on tennis-related performance</title><author>MAGAL, Meir ; WEBSTER, Michael J ; SISTRUNK, Lucille E ; WHITEHEAD, Malcolm T ; EVANS, Ronald K ; BOYD, Joseph C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-a9cb63c1f2e3649e4f55f680f2affb7afcc249cd8ea0fcaf6cf4e052d58169903</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Adult</topic><topic>Biological and medical sciences</topic><topic>Cross-Over Studies</topic><topic>Dehydration - prevention & control</topic><topic>Double-Blind Method</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Glycerol - therapeutic use</topic><topic>Humans</topic><topic>Male</topic><topic>Metabolisms and neurohumoral controls</topic><topic>Plasma Volume</topic><topic>Rehydration Solutions</topic><topic>Running - physiology</topic><topic>Space life sciences</topic><topic>Task Performance and Analysis</topic><topic>Tennis - physiology</topic><topic>Vertebrates: anatomy and physiology, studies on body, several organs or systems</topic><topic>Water</topic><topic>Water and mineral metabolism. Osmoregulation. Acidobasic balance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MAGAL, Meir</creatorcontrib><creatorcontrib>WEBSTER, Michael J</creatorcontrib><creatorcontrib>SISTRUNK, Lucille E</creatorcontrib><creatorcontrib>WHITEHEAD, Malcolm T</creatorcontrib><creatorcontrib>EVANS, Ronald K</creatorcontrib><creatorcontrib>BOYD, Joseph C</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Physical Education Index</collection><collection>MEDLINE - Academic</collection><jtitle>Medicine and science in sports and exercise</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MAGAL, Meir</au><au>WEBSTER, Michael J</au><au>SISTRUNK, Lucille E</au><au>WHITEHEAD, Malcolm T</au><au>EVANS, Ronald K</au><au>BOYD, Joseph C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of glycerol and water hydration regimens on tennis-related performance</atitle><jtitle>Medicine and science in sports and exercise</jtitle><addtitle>Med Sci Sports Exerc</addtitle><date>2003</date><risdate>2003</risdate><volume>35</volume><issue>1</issue><spage>150</spage><epage>156</epage><pages>150-156</pages><issn>0195-9131</issn><eissn>1530-0315</eissn><coden>MSPEDA</coden><abstract>To compare glycerol and water hyperhydration and rehydration on tennis related skill and agility performance.
Eleven male subjects completed two counter-balanced, double-blind trials. Each trial consisted of three phases: 1). hyperhydration with or without glycerol (1.0 g.kg/(-1)) over 150 min, 2). 120 min of exercise-induced dehydration (EID), and 3) rehydration with or without glycerol (0.5 g.kg(-1)) over 90 min. After each phase, subjects performed 5- and 10-m sprint tests, a repeated-effort agility test, and tennis skill tests.
Glycerol (G) hyperhydration significantly increased fluid retention by approximately 900 mL over the placebo (P) (P<or= 0.05). After EID, body weight was reduced in both groups but was not significantly different between groups (G: -2.71 +/- 0.08, P: -2.67 +/- 0.09%). At the end of the rehydration phase, PV was significantly greater in the G trial than in the P trial, and the G trial resulted in a significantly greater fluid retention of approximately 700 mL over the P trial ( P<or= 0.05). Although the magnitude of hypohydration was modest (<3%), sprint times were significantly slower after the EID ( P<or= 0.05) compared with post hyperhydration and post rehydration but were not significantly different between trials. No significant difference existed between groups and across time for the repeated effort agility tests and groundstrokes and serve tests.
The data demonstrate that relatively modest hypohydration ( approximately 2.7%) as a result of EID, significantly slows 5- and 10-m sprint times. Furthermore, although the glycerol hydration regimen provided a better hydration status than the placebo hydration regimen, no performance benefits were observed.</abstract><cop>Hagerstown, MD</cop><pub>Lippincott Williams & Wilkins</pub><pmid>12544649</pmid><doi>10.1097/00005768-200301000-00023</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Adult Biological and medical sciences Cross-Over Studies Dehydration - prevention & control Double-Blind Method Fundamental and applied biological sciences. Psychology Glycerol - therapeutic use Humans Male Metabolisms and neurohumoral controls Plasma Volume Rehydration Solutions Running - physiology Space life sciences Task Performance and Analysis Tennis - physiology Vertebrates: anatomy and physiology, studies on body, several organs or systems Water Water and mineral metabolism. Osmoregulation. Acidobasic balance |
| title | Comparison of glycerol and water hydration regimens on tennis-related performance |
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