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        "resumen" => "<span class="elsevierStyleBold">Objective&#58;</span> To determine possible electrolyte changes induced by competitive tennis in young female players&#46; <span class="elsevierStyleBold">Material and methods&#58;</span> Ten female tennis players &#40;mean &#177; SEM age&#58; 15&#46;6 &#177; 0&#46;87 years&#44; height&#58; 164&#46;55 &#177; 1&#46;98 cm&#44; weight&#58; 58&#46;77 &#177; 2&#46;08 kg&#41; were selected to participate in an official tennis tournament&#46; A blood sample &#40;15 mL&#41; was obtained 30 minutes before the tournament&#46; After extraction&#44; the players drank 500 mL of water before the match&#46; Water intake &#40;ad libitum&#41; and heart rate &#40;HR&#41; were recorded during the match&#46; The matches were recorded on video&#46; Another blood sample was obtained at the end of the match&#46; The variables analyzed were HR&#44; total play time&#44; real play time&#44; rest time&#44; plasma electrolyte concentrations &#40;sodium&#44; potassium and chloride&#41;&#44; and total plasma proteins to determine plasma volume changes&#46; <span class="elsevierStyleBold">Results&#58; </span>Total play time was 99&#46;6 &#177; 18&#46;5 min and mean HR during the match was 158&#46;4 &#177; 1&#46;98 bpm-1&#46; After the match&#44; an increase in plasma volume &#40;3&#46;59 &#177; 2&#46;56&#37;&#41; and a decrease in body weight &#40;&#173;1&#46;31 &#177; 0&#46;27&#41; were observed&#44; as well as a significant rise in plasma sodium &#40;136&#46;98 &#177; 1&#46;71 to 145&#46;77 &#177; 1&#46;77&#41; and chloride concentrations &#40;92&#46;17 &#177; 1&#46;21 a 100&#46;12 &#177; 1&#46;31&#41; compared with those registered before the match &#40;p &#8804; 0&#44;001&#41;&#46; Plasma potassium concentration decreased slightly &#40;3&#46;90 &#177; 0&#46;13 to 3&#46;13 &#177; 0&#46;19&#41; &#40;p &#8804; 0&#46;01&#41;&#46; <span class="elsevierStyleBold">Discussion&#58;</span> Hydration should be controlled in tennis players to avoid electrolyte imbalance&#46;"
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Plasma volume and electrolyte changes after a female single tennis match
Gema Torres Luquea, Carmen Villaverde Gutiérrezb
a Departamento de Ciencias de la Actividad Física y Deporte. Universidad Católica San Antonio de Murcia. Murcia. España.
b Escuela de Ciencias de la Salud. Universidad de Granada. Granada. España.
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        "resumen" => "<span class="elsevierStyleBold">Objective&#58;</span> To determine possible electrolyte changes induced by competitive tennis in young female players&#46; <span class="elsevierStyleBold">Material and methods&#58;</span> Ten female tennis players &#40;mean &#177; SEM age&#58; 15&#46;6 &#177; 0&#46;87 years&#44; height&#58; 164&#46;55 &#177; 1&#46;98 cm&#44; weight&#58; 58&#46;77 &#177; 2&#46;08 kg&#41; were selected to participate in an official tennis tournament&#46; A blood sample &#40;15 mL&#41; was obtained 30 minutes before the tournament&#46; After extraction&#44; the players drank 500 mL of water before the match&#46; Water intake &#40;ad libitum&#41; and heart rate &#40;HR&#41; were recorded during the match&#46; The matches were recorded on video&#46; Another blood sample was obtained at the end of the match&#46; The variables analyzed were HR&#44; total play time&#44; real play time&#44; rest time&#44; plasma electrolyte concentrations &#40;sodium&#44; potassium and chloride&#41;&#44; and total plasma proteins to determine plasma volume changes&#46; <span class="elsevierStyleBold">Results&#58; </span>Total play time was 99&#46;6 &#177; 18&#46;5 min and mean HR during the match was 158&#46;4 &#177; 1&#46;98 bpm-1&#46; After the match&#44; an increase in plasma volume &#40;3&#46;59 &#177; 2&#46;56&#37;&#41; and a decrease in body weight &#40;&#173;1&#46;31 &#177; 0&#46;27&#41; were observed&#44; as well as a significant rise in plasma sodium &#40;136&#46;98 &#177; 1&#46;71 to 145&#46;77 &#177; 1&#46;77&#41; and chloride concentrations &#40;92&#46;17 &#177; 1&#46;21 a 100&#46;12 &#177; 1&#46;31&#41; compared with those registered before the match &#40;p &#8804; 0&#44;001&#41;&#46; Plasma potassium concentration decreased slightly &#40;3&#46;90 &#177; 0&#46;13 to 3&#46;13 &#177; 0&#46;19&#41; &#40;p &#8804; 0&#46;01&#41;&#46; <span class="elsevierStyleBold">Discussion&#58;</span> Hydration should be controlled in tennis players to avoid electrolyte imbalance&#46;"
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Article information
ISSN: 18866581
Original language: English
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