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Changes in Markers of Oxidative Stress and α-Amylase in Saliva of Children Associated with a Tennis Competition

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  • José María Giménez-Egido

    (Department of Physical Activity and Sport, Faculty of Sport Science, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30720 Murcia, Spain
    Sport Performance Analysis Association, University of Murcia, 30720 Murcia, Spain)

  • Raquel Hernández-García

    (Department of Physical Activity and Sport, Faculty of Sport Science, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30720 Murcia, Spain
    Sport Performance Analysis Association, University of Murcia, 30720 Murcia, Spain)

  • Damián Escribano

    (Interdisciplinary Laboratory of Clinical Analysis of the University of Murcia (Interlab-UMU), Regional Campus of International Excellence ‘Campus Mare Nostrum’, University of Murcia, Campus de Espinardo s/n, 30100 Espinardo, Spain)

  • Silvia Martínez-Subiela

    (Interdisciplinary Laboratory of Clinical Analysis of the University of Murcia (Interlab-UMU), Regional Campus of International Excellence ‘Campus Mare Nostrum’, University of Murcia, Campus de Espinardo s/n, 30100 Espinardo, Spain)

  • Gema Torres-Luque

    (Sport Performance Analysis Association, University of Murcia, 30720 Murcia, Spain
    Faculty of Humanities and Education Sciences, University of Jaen, 23071 Jaen, Spain)

  • Enrique Ortega-Toro

    (Department of Physical Activity and Sport, Faculty of Sport Science, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30720 Murcia, Spain
    Sport Performance Analysis Association, University of Murcia, 30720 Murcia, Spain)

  • José Joaquín Cerón

    (Interdisciplinary Laboratory of Clinical Analysis of the University of Murcia (Interlab-UMU), Regional Campus of International Excellence ‘Campus Mare Nostrum’, University of Murcia, Campus de Espinardo s/n, 30100 Espinardo, Spain)

Abstract

The purpose of this paper was to analyze the changes caused by a one-day tennis tournament in biomarkers of oxidative stress and α-amylase in saliva in children. The sample was 20 male active children with the following characteristics: (a) age of players = 9.46 ± 0.66 years; (b) weight = 34.8 ± 6.5 kg; (c) height = 136.0 ± 7.9 cm; (d) mean weekly training tennis = 2.9 ± 1.0 h. The tennis competition ran for one day, with four matches for each player. Data were taken from the average duration per match and the rating of perceived exertion (RPE). Four biomarkers of antioxidant status: uric acid (AU), Trolox equivalent antioxidant capacity (TEAC), ferric reducing ability of saliva (FRAS, cupric reducing antioxidant capacity (CUPRAC) and salivary alpha-amylase (sAA) as a biomarker of psychological stress were measured in saliva. The time points were baseline (at home before the tournament), pre-competition (immediately before the first match) and post-match (after each match) measurements. The four biomarkers of antioxidant status showed a similar dynamic with lower values at baseline and a progressive increase during the four matches. Overall one-day tennis competition in children showed a tendency to increase antioxidant biomarkers in saliva. In addition, there was an increase in pre-competition sAA possibly associated with psychological stress. Further studies about the possible physiological implications of these findings should be performed in the future.

Suggested Citation

  • José María Giménez-Egido & Raquel Hernández-García & Damián Escribano & Silvia Martínez-Subiela & Gema Torres-Luque & Enrique Ortega-Toro & José Joaquín Cerón, 2020. "Changes in Markers of Oxidative Stress and α-Amylase in Saliva of Children Associated with a Tennis Competition," IJERPH, MDPI, vol. 17(17), pages 1-12, August.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:17:p:6269-:d:405451
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