Objectives To examine the validity and inter-unit reliability of 10 Hz GPS for measuring
instantaneous velocity during maximal accelerations. Design Experimental. Methods Two 10 …

In this study, we assessed the validity and reliability of 5 and 10 Hz global positioning
systems (GPS) for measuring instantaneous velocity during acceleration, deceleration, and …

ABSTRACT GPS systems are commonly used to analysis football performance during either
trainings or matches. While many studies have investigated the validity and reliability of …

There has been no previous investigation of the concurrent validity and reliability of the
current 5 Hz global positioning system (GPS) to assess sprinting speed or the reliability of …

The aims of the current study were to examine the magnitude of between-GPS-models
differences in commonly reported running-based measures in football, examine between …

The objectives of the present study were to examine the validity and reliability of the 10 Hz
Johan GPS unit in assessing in-line movement and change of direction. The validity was …

We compared the accuracy of 2 GPS systems with different sampling rates for the
determination of distances covered at high-speed and metabolic power derived from a …

This study aimed to assess the validity and inter-unit reliability of 5 Hz and 10 Hz global
positioning system (GPS) units and determine the differences between these units as …

The use of GPS technology for training and research purposes requires a study of the
reliability, validity and accuracy of the data generated (Petersen et al., 2009). To date …

Purpose: The aims of this study were to (1) assess the concurrent validity of global
positioning systems (GPSs) against a radar device to measure sprinting force–velocity (F–v) …