Accuracy and Reliability of GPS Devices for Measurement of Sports-Specific Movement Patterns Related to Cricket, Tennis, and Field-Based Team Sports

Vickery, Will; Dascombe, Ben J.; Baker, John; Higham, Dean G.; Spratford, Wayne; Duffield, Rob

doi:10.1519/jsc.0000000000000285

Cited by 107 publications

(98 citation statements)

References 18 publications

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“…The reliability of GPS has been demonstrated to rise proportionally with displacement distance (Coutts & Duffield, 2010;Petersen, Pyne, Portus, & Dawson, 2009). Vickery et al (2014) found no horizontal dilution of positioning using 15 Hz devices, unlike the results obtained with 5-10 Hz versions. The validity of the instrument closely depends on sampling frequency, the speed and the duration of the task (Aughey, 2011).…”

Section: Introductioncontrasting

confidence: 55%

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Movement analysis and metabolic profile of tennis match play: comparison between hard courts and clay courts

Ponzano

Gollin

2017

International Journal of Performance Analysis in Sport

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This study aimed to define the movement analysis and metabolic model in tennis on hard courts and clay courts. Twenty-four tennis players were equipped with a 15 Hz GPS and a Polar. H7 and played a match on each playing surface. The average duration of matches was 76 Å} 24 (C) and 69 Å} 17 min (H). The maximum heart rate (HRmax) was 185 Å} 14 (C) and 178 Å} 10 bpm (H), the average heart rate (HRav) was 144 Å} 14 (C) and 139 Å} 12 bpm (H). The average metabolic power (MPav) was 3.93 Å} .34 (C) and 3.70 Å} .34 W Å~ kg−1 (H) (ES = .72, C > H, +6%). The ANOVA and the post hoc showed significant differences regarding the considered parameters on both the surfaces. The t-test highlighted significant surface-related differences (ES = .88, C > H, +26%) concerning accelerations performed between 50 and 60% of the maximum value, decelerations between 40 and 50% of the maximum (ES = 1.28, H > C, +37%), metabolic power between 0 and 10 W Å~ kg−1 (ES =

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Section: Introductioncontrasting

confidence: 55%

“…The only criterion adopted was that subjects wore the same device during the match on the red clay and the hard court. Indeed, due to lower inter-unit reliability it is advisable that athletes use the same device within any research design in order to avoid inter-unit errors Vickery et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

Movement analysis and metabolic profile of tennis match play: comparison between hard courts and clay courts

Ponzano

Gollin

2017

International Journal of Performance Analysis in Sport

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“…No other parameters were taken into account in this study (Vickery et al, 2014) due to gold-standard data recommendation (Cummins et al, 2013)…”

Section: Methodsmentioning

confidence: 99%

The validity and reliability of a 5-hz GPS device for quantifying athletes’ sprints and movement demands specific to team sports

Muñoz-López¹,

Granero-Gil²,

Pino-Ortega³

et al. 2017

jhse

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GPS systems are commonly used to analysis football performance during either trainings or matches. While many studies have investigated the validity and reliability of these devices, there is a lack of objective procedures regarding synchronization with gold standards such as real distance or timing gates. The objective of this study was to study the validity and reliability of a 5Hz GPS system (WIMU) during 10m and 30m sprints and during team sports specific movements and the reliability during very high s peeds (> 30 km/h). The Total Distance (TD) BIAS for Circuit A, 10m sprint and 30m sprint were -2.73  1.64 m (p < 0.001), -0.80  0.58 m (p<0.001) and 0.42  2.50 m (p=0.515) respectively. Average ICC for GPS speed point-topoint were 0.976  0.012 and 0.991 0.003 for Circuit B and Motorized Sprints, respectively. The average BIAS compared with each unit mean laps (intra-unit reliability) results for TD, Peak-Speed and Avg-Speed were 0.00  1.68, 0.00  1.73 and 0.00  0.33 for Circuit A, 0.00  0.49, 0.00  0.53 and 0.00  0.77 for 10m sprints and 0.00  2.34, 0.00  0.76 and 0.00  0.74 for 30m sprints, non-significant difference in all cases. In conclusion, despite a lower than recommended sample frequency, the WIMU GPS showed to be valid and reliable for measuring sprints at speed higher than 20 km· h -1 , as well as for team sport movements. (2017). The validity and reliability of a 5-hz GPS device for quantifying athletes' sprints and movement demands specific to team sports.

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“…12,14,15 While these studies provided a thorough assessment of velocity, acceleration, and deceleration compared with high-sampling criterion measures, the limitations were that they did not assess using sport-specific movements involving changes in direction. Other studies have employed sport-specific movement circuits, 8,11,[16][17][18][19] however most of these studies are limited in the criterion measures used to evaluate velocity (eg, timing gates, 20,21 ) and synchronization protocols are not well documented.…”

Section: Reliability and Validity Of Commercial Gps Devicesmentioning

confidence: 99%

Unpacking the Black Box: Applications and Considerations for Using GPS Devices in Sport

Malone¹,

Lovell²,

Varley³

et al. 2017

International Journal of Sports Physiology and Performance

393

460

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Athlete-tracking devices that include global positioning system (GPS) and microelectrical mechanical system (MEMS) components are now commonplace in sport research and practice. These devices provide large amounts of data that are used to inform decision making on athlete training and performance. However, the data obtained from these devices are often provided without clear explanation of how these metrics are obtained. At present, there is no clear consensus regarding how these data should be handled and reported in a sport context. Therefore, the aim of this review was to examine the factors that affect the data produced by these athlete-tracking devices and to provide guidelines for collecting, processing, and reporting of data. Many factors including device sampling rate, positioning and fitting of devices, satellite signal, and data-filtering methods can affect the measures obtained from GPS and MEMS devices. Therefore researchers are encouraged to report device brand/model, sampling frequency, number of satellites, horizontal dilution of precision, and software/firmware versions in any published research. In addition, details of inclusion/exclusion criteria for data obtained from these devices are also recommended. Considerations for the application of speed zones to evaluate the magnitude and distribution of different locomotor activities recorded by GPS are also presented, alongside recommendations for both industry practice and future research directions. Through a standard approach to data collection and procedure reporting, researchers and practitioners will be able to make more confident comparisons from their data, which will improve the understanding and impact these devices can have on athlete performance. Keywords: microtechnology, athlete tracking, method, MEMS, time-motion analysisGlobal positioning system (GPS) is a satellite navigation network that provides location and time information of tracking devices. Initially developed for military purposes, this system now has much wider application, including its use in athlete tracking and load quantification. GPS satellites orbit the Earth and send precise time information (from an atomic clock) to the GPS receivers (at the speed of light) to determine the duration of signal transit. 1 A minimum of four satellites are required to determine the position of the GPS receiver trigonometrically. Commercial GPS systems are now commonly used in individual-and team-sports at all levels. The development and subsequent acceptance of microtechnology in sport has led to the integration of other micro inertial sensors within GPS devices, such as triaxial accelerometers, magnetometers, and gyroscopes; collectively termed as micro electrical mechanical systems (MEMS). Thus, GPS and MEMS technology provides practitioners with a wide array of data that can be used to assess athlete physical loading and activity profile.The use of GPS in sport allows practitioners to evaluate athletic training programs, and researchers to better investigate applied research questi...

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Accuracy and Reliability of GPS Devices for Measurement of Sports-Specific Movement Patterns Related to Cricket, Tennis, and Field-Based Team Sports

Cited by 107 publications

References 18 publications

Movement analysis and metabolic profile of tennis match play: comparison between hard courts and clay courts

Movement analysis and metabolic profile of tennis match play: comparison between hard courts and clay courts

The validity and reliability of a 5-hz GPS device for quantifying athletes’ sprints and movement demands specific to team sports

Unpacking the Black Box: Applications and Considerations for Using GPS Devices in Sport

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