TY  - JOUR
A1  - Kalo, Kristin
A1  - Vogt, Lutz
A1  - Sieland, Johanna
A1  - Banzer, Winfried
A1  - Niederer, Daniel
T1  - Injury and training history are associated with glenohumeral internal rotation deficit in youth tennis athletes
T2  - BMC musculoskeletal disorders
N2  - A glenohumeral internal rotation deficit (GIRD) of the shoulder, is associated with an increased risk of shoulder injuries in tennis athletes. The aim of the present study was to reveal the impact of 1) age, sex, specific training data (i.e. training volume, years of tennis practice, years of competitive play) and 2) upper extremity injuries on GIRD in youth competitive tennis athletes.

A cross-sectional retrospective study design was adopted. Youth tennis players (n = 27, 12.6 ± 1.80 yrs., 18 male) belonging to an elite tennis squad were included. After documenting the independent variables (anthropometric data, tennis specific data and history of injury), the players were tested for internal (IR) and external (ER) shoulder rotation range of motion (RoM, [°]). From these raw values, the GIRD parameters ER/IR ratio and side differences and TRoM side differences were calculated. Pearson’s correlation analyses were performed to find potential associations of the independent variables with the GIRD outcomes.

A significant positive linear correlation between the years of tennis training and IR side asymmetry occurred (p < .05). A significant negative linear relation between the years of tennis training and the ratio of ER to IR range of motion (RoM) in the dominant side (p < .05) was found. The analysis of covariance showed a significant influence of the history of injuries on IR RoM (p < .05).

Injury and training history but not age or training volume may impact on glenohumeral internal rotation deficit in youth tennis athletes. We showed that GIRD in the dominant side in youth tennis players is progressive with increasing years of tennis practice and independent of years of practice associated with the history of injuries. Early detection of decreased glenohumeral RoM (specifically IR), as well as injury prevention training programs, may be useful to reduce GIRD and its negative consequences.
KW  - GIRD
KW  - Shoulder injury
KW  - Tennis player
KW  - Training history
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62981
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-629810
SN  - 1471-2474
N1  - The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
N1  - Open access funding provided by Projekt DEAL.
N1  - Institute: Psychologie und Sportwissenschaften ; Medizin
VL  - 21.2020
SP  - 1
EP  - 7
PB  - BioMed Central
CY  - London
ER  -