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Título
Eccentric and Isometric Shoulder Rotation Strength and Range of Motion: Normative Values for Adolescent Competitive Tennis Players
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Frontiers in Sports and Active Living
Cita Bibliográfica
Johansson F, Asker M, Malmberg A, Fernandez-Fernandez J, Warnqvist A and Cools A (2022) Eccentric and Isometric Shoulder Rotation Strength and Range of Motion: Normative Values for Adolescent Competitive Tennis Players. Front. Sports Act. Living 4:798255. doi: 10.3389/fspor.2022.798255
Editorial
University of Salford, United Kingdom
Fecha
2022
Resumen
[EN] The aim of this cross-sectional study was to investigate isometric internal rotation (IR),
external rotation (ER), abduction (ABD), and eccentric external rotation (eccER) shoulder
strength and rotational range of motion (ROM) in adolescent male and female competitive
tennis players. Additional aims of the study were to provide a tennis-specific normative
database based on a large sample of players to deepen the knowledge regarding
shoulder strength and ROM for adolescent competitive tennis players, and to discuss
differences based on sex, age, and level of play. Shoulder strength and ROM was
assessed in 301 adolescent competitive tennis players, 176 boys and 125 girls with
a mean age of 14.6 and 14.4 years, respectively. Outcome variables of interest were
isometric IR and ER strength, ABD strength, eccER shoulder strength, intermuscular
strength ratios ER/IR and eccER/IR, IR ROM, ER ROM, and total range of motion
(TROM). A General Linear Model two-way ANOVA was used to analyze differences in
sex, age, and level of play. The findings of this study demonstrated age, side, and sex
differences in the shoulder isometric strength, the eccER strength and ROM in adolescent
competitive tennis players. Furthermore, when strength was expressed as ratios ER/IR
and eccER/IR both sexes showed a lower ratio for eccER/IR in national players (0.95
± 0.22 and 0.95 ± 0.23) compared to regional players (1.01 ± 0.32 and 1.07 ±
0.29) for male and female players, respectively. In conclusion, this paper presents a
tennis-specific normative database for shoulder rotation strength and ROM in adolescent
male and female competitive players. The key points in this evaluation are strength values
normalized to body mass, intermuscular ratios, and TROM.
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