TY  - JOUR
AV  - none
A1  - Lago-Fuentes, Carlos
A1  - Aiello, Paolo
A1  - Testa, Mauro
A1  - Muñoz, Iker
A1  - Macías Calvo, Marcos
KW  - Tracking system; Change of direction; Team sports; Futsal.
ID  - uneatlantico41
EP  - 258
TI  - Validity and Reliability of a New Device to Measure Type of Actions in Indoor Sports
VL  - 42
SN  - 0172-4622
UR  - http://doi.org/10.1055/a-1244-9985
N2  - The purpose of this study was to analyze the validity and the reliability of the intensity ranges, number of actions and changes of direction measured by a commercial inertial measurement unit. Eleven elite youth futsal players performed a circuit with different type of displacements as sprinting, running at low-medium intensity, standing up and changes of direction. Data recorded by the Overtraq system were compared with video-analyzer during the six trials of each player. Standard error mean, Intraclass Correlation Coeficient and Coefficient of variation, were calculated to analyze the reliability of the device, as well as the Root Mean Square Error and Confidence Interval with correlation of Pearson for its validity. The results reported good validity for three intensity ranges (R2>0.7) with high reliability (Intraclass Correlation Coeficient: 0.8?0.9), especially for high intensity actions (Intraclass Correlation Coeficient: 0.95, Coefficient of Variation: 3.06%). Furthermore, the validity for the number of different actions was almost perfect (96.3?100%), with only small differences regarding changes of activity (mean error: 2.0%). The Overtraq system can be considered as a valid and reliable technology for measuring and monitoring actions at different intensities and changes of direction in futsal, likewise common actions for other indoor sports.
JF  - International Journal of Sports Medicine
Y1  - 2021/03//
IS  - 03
SP  - 253
ER  -