{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T01:36:17Z","timestamp":1787016977347,"version":"build-2736575974"},"reference-count":64,"publisher":"BMJ","issue":"Suppl 1","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Br J Sports Med"],"accepted":{"date-parts":[[2014,1,19]]},"published-print":{"date-parts":[[2014,4]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To determine whether an individualised hydration regimen reduces thermal, physiological and perceptual strain during match-play tennis in the heat, and minimises alterations in neuromuscular function and physical performance postmatch and into recovery.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>10 men undertook two matches for an effective playing time (ball in play) of 20\u2005min (\u223c113\u2005min) in \u223c37\u00b0C and \u223c33% RH conditions. Participants consumed fluids ad libitum during the first match (HOT) and followed a hydration regimen (HYD) in the second match based on undertaking play euhydrated, standardising sodium intake and minimising body mass losses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>HYD improved prematch urine specific gravity (1.013\u00b10.006 vs 1.021\u00b10.009\u2005g\/mL; p&lt;0.05). Body mass losses (\u223c0.3%), fluid intake (\u223c2\u2005L\/h) and sweat rates (\u223c1.6\u2005L\/h) were similar between conditions. Core temperature was higher during the first 10\u2005min of effective play in HOT (p&lt;0.05), but increased similarly (\u223c39.3\u00b0C) on match completion. Heart rate was higher (\u223c11\u2005bpm) throughout HOT (p&lt;0.001). Thermal sensation was higher during the first 7.5\u2005min of effective play in HOT (p&lt;0.05). Postmatch knee extensor and plantar flexor strength losses, along with reductions in 15\u2005m sprint time and repeated-sprint ability (p&lt;0.05), were similar in both conditions, and were restored within 24\u2005h.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Both the hydration regimen and ad libitum fluid consumption allowed for minimal body mass losses (&lt;1%). However, undertaking match-play in a euhydrated state attenuated thermal, physiological and perceptual strain. Maximal voluntary strength in the lower limbs and repeated-sprint ability deteriorated similarly in both conditions, but were restored within 24\u2005h.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bjsports-2013-093242","type":"journal-article","created":{"date-parts":[[2014,3,25]],"date-time":"2014-03-25T08:21:07Z","timestamp":1395735667000},"page":"i64-i70","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":22,"title":["Coping with heat stress during match-play tennis: Does an individualised hydration regimen enhance performance and recovery?"],"prefix":"10.1136","volume":"48","author":[{"given":"Julien D","family":"P\u00e9riard","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sebastien","family":"Racinais","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wade L","family":"Knez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher P","family":"Herrera","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan J","family":"Christian","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Olivier","family":"Girard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2014,3,25]]},"reference":[{"key":"2024051404522482000_48.Suppl_1.i64.1","doi-asserted-by":"publisher","DOI":"10.2165\/00007256-200737030-00002"},{"key":"2024051404522482000_48.Suppl_1.i64.2","doi-asserted-by":"crossref","unstructured":"P\u00e9riard JD Girard O Racinais S . 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