Validity and Reliability of GPS Units to Monitor Cricket-Specific Movement Patterns

• DOI: 10.1123/ijspp.4.3.381
• Publication Date: 2016-08-10T12:02:04Z
• Authors: Carl Petersen; David Pyne; Marc Portus; Brian Dawson
• Keywords: Coefficient of variation; Validity

The validity and reliability of three commercial global positioning system (GPS) units (MinimaxX, Catapult, Australia; SPI-10, SPI-Pro, GPSports, Australia) were quantified.Twenty trials cricket-specific locomotion patterns distances (walking 8800 m, jogging 2400 running 1200 striding 600 sprinting 20- to 40-m intervals, run-a-three) compared against criterion measures (400-m athletic track, electronic timing). Validity was quantified with the standard error estimate (SEE) estimated using typical expressed as a coefficient variation.The (mean +/- 90% confidence limits) for walking ranged from 0.4 0.1 3.8 1.4%, whereas over 20 40 m including run-a-three (approx. 50 m) SEE 2.6 1.0 23.8 8.8%. (expressed mean [90% limits]) estimating distance traveled by 0.3 (0.2 0.4) 2.9% (2.3 4.0). Similarly, different 2.0 (1.6 2.8) 30.0% (23.2 43.3).The accuracy bias dependent on GPS brand employed. Commercially available have acceptable longer (600-8800 in striding, but require further development shorter distances.