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Título
Age and sex-related upper body performance differences in competitive young tennis players
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
PLOS ONE
Número de la revista
9
Cita Bibliográfica
Fernandez-Fernandez, J., Nakamura, F. Y., Moreno-Perez, V., Lopez-Valenciano, A., Coso, J. D., Gallo-Salazar, C., Barbado, D., Ruiz-Perez, I., & Sanz-Rivas, D. (2019). Age and sex-related upper body performance differences in competitive young tennis players. PLoS ONE, 14(9). https://doi.org/10.1371/JOURNAL.PONE.0221761
Editorial
Daniel Boullosa, University of Brasilia, BRAZIL
Fecha
2019
Resumen
[EN] Objective The aims of this study were to analyze the shoulder functional profile of young male and
female tennis players and to establish the relationship among physical variables and serve
speed.
Methods A total of 128 Spanish tennis players (Under-13 (n = 32/32 males/females) and Under-15
(n = 36/28 males/females), were tested during National training camps. Tests included passive
shoulder range of motion (ROM) for both internal (IR) and external rotation (ER) and
isometric strength (i.e., IR and ER) of the dominant/non-dominant shoulders, medicine ball
throws (MBT), and serve speed. Age and sex pairwise comparisons were carried using the
Hedges’ g index (dg).
Results Results showed age and sex effects on serve speed and all MBT, with males showing
greater changes (1.51<=dg<=1.98) with age than females (0.92<=dg<=1.35; p<0.05). U15
males showed higher (p<0.05) absolute shoulder IR and ER strength than U13, with only
significant differences between males and females in the U15. Regarding ROM, U15 males
showed a decreased IR ROM compared to U13 (dg = -0.84; p<0.05) and higher significant
IR bilateral deficit (dg = 0.51; p<0.05). The distances obtained in the different MBT were the
variables more correlated to serve speed.
Conclusion The present results suggest that shoulder strength, medicine ball throws and serve speed
increased along with age in young elite tennis players of both sexes. However, a decreased
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