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.
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http://dx.doi.org/10.3390/ijerph17176269 | DOI Listing |
Front Psychol
January 2025
Department of Motor Behavior in Sports, Institute of Health Promotion and Clinical Movement Science, German Sport University Cologne, Cologne, Germany.
Introduction: Both appraisal emotion approaches and self-regulation theory emphasize that appraising an event as conducive or detrimental to one's current goals may trigger an affective response that can be observed nonverbally. Because there may be a female advantage in the inhibition and self-regulation of emotions, we hypothesized that female but not male athletes regulate emotions during sports through explicit nonverbal behaviors.
Methods: All nonverbal hand movement behavior of right-handed female and male tennis athletes was recorded during competitive matches.
J ISAKOS
January 2025
Fortius Clinic, London, United Kingdom; Department of Bioengineering, Imperial College, London, United Kingdom.
Introduction: Arthrodesis of the first metatarsophalangeal joint (MTPJ) is a reliable procedure in alleviating pain and restoring function. However, there is limited published literature of the outcomes of this procedure and the ability to return to sport in elite athletes. This study aims to assess the outcomes of first MTPJ arthrodesis in the elite athlete population and their ability to return to professional sport.
View Article and Find Full Text PDFPsychoneuroendocrinology
January 2025
Department of Psychology, Bangor University, Bangor, Gwynedd, United Kingdom. Electronic address:
In a variety of settings, cortisol and testosterone are positively "coupled." That is, within-person fluctuations of these hormones occur in parallel, with increases and decreases in one hormone corresponding to increases and decreases in the other. A dataset comprised of salivary cortisol and testosterone levels from varsity women athletes from six different Emory University sports teams (volleyball 2002, 2005, and 2008; softball 2004; tennis 2009; soccer 2013) was used to explore the relationship between coupling and hormone reactivity to athletic competition.
View Article and Find Full Text PDFChildren (Basel)
November 2024
Department of Pediatrics, Faculty of Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iasi, Romania.
A physically active lifestyle offers multiple benefits, including lowering the risk of cardiovascular disease, lowering body-mass index (BMI), and, last but not least, improving the quality of life. However, there are still disincentives to physical activity in children with heart diseases due to the high protection of parents and the scarcity of data in the literature. The purpose of this paper is to help pediatricians and pediatric cardiologists identify the type of physical activity allowed in children with congenital cardiac malformations, thus minimizing the risk of major adverse effects, such as acute coronary syndrome and sudden cardiac death.
View Article and Find Full Text PDFBiol Sport
January 2025
China Institute of Sports and Health Science, Beijing Sport University, Beijing, China.
Sprint interval training (SIT) is a potent exercise strategy to enhance athletes' aerobic capacity in a time-efficient manner. The purpose of this study was to examine the effect of a low-volume court-based SIT program on aerobic capacity and sport-specific endurance performance for competitive tennis players. Sixteen competitive collegiate tennis players were randomly assigned to the SIT (court-based repeated-sprint training) and traditional endurance training (ET; 45-min continuous treadmill running) groups for a 6-week intervention (3 sessions/week).
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