scholarly journals Validity and reliability of a radio positioning system for tracking athletes in indoor and outdoor team sports

2012 ◽  
Vol 44 (4) ◽  
pp. 1108-1114 ◽  
Author(s):  
Thuraiappah Sathyan ◽  
Richard Shuttleworth ◽  
Mark Hedley ◽  
Keith Davids
Keyword(s):  
Team Sports ◽  
Positioning System ◽  
Validity And Reliability ◽  
Indoor And Outdoor

scholarly journals The Validity and Reliability of 1-Hz and 5-Hz Global Positioning Systems for Linear, Multidirectional, and Soccer-Specific Activities

2010 ◽  
Vol 5 (4) ◽  
pp. 448-458 ◽  
Author(s):  
Matthew D. Portas ◽  
Jamie A. Harley ◽  
Christopher A. Barnes ◽  
Christopher J. Rush
Keyword(s):  
Confidence Intervals ◽  
Global Positioning System ◽  
Team Sports ◽  
Positioning System ◽  
Validity And Reliability ◽  
Activity Data ◽  
Positioning Systems ◽  
Typical Error ◽  
Global Positioning ◽  
Measured Distance

Purpose:The study aimed to analyze the validity and reliability of commercially available nondifferential Global Positioning System (NdGPS) devices for measures of total distance during linear, multidirectional and soccer-specific motion at 1-Hz and 5-Hz sampling frequencies.Methods:Linear (32 trials), multidirectional (192 trials) and soccer-specific courses (40 trials) were created to test the validity (mean ± 90% confidence intervals), reliability (mean ± 90% confidence intervals) and bias (mean ± 90% confidence intervals) of the NdGPS devices against measured distance. Standard error of the estimate established validity, reliability was determined using typical error and percentage bias was established.Results:The 1-Hz and 5-Hz data ranged from 1.3% ± 0.76 to 3.1% ± 1.37 for validity and 2.03% ± 1.31 to 5.31% ± 1.2 for reliability for measures of linear and soccer-specific motion. For multidirectional activity, data ranged from 1.8% ± 0.8 to 6.88% ± 2.99 for validity and from 3.08% ± 1.34 to 7.71% ± 1.65 for reliability. The 1-Hz underestimated some complex courses by up to 11%.Conclusions:1-Hz and 5-Hz NdGPS could be used to quantify distance in soccer and similar field-based team sports. Both 1-Hz and 5-Hz have a threshold beyond which reliability is compromised. 1-Hz also underestimates distance and is less valid in more complex courses.

scholarly journals Examination of Cognitive Flexibility Levels of Young Individual and Team Sport Athletes

2018 ◽  
Vol 6 (8) ◽  
pp. 149 ◽  
Author(s):  
Şehmus Aslan
Keyword(s):  
High School Students ◽  
Cognitive Flexibility ◽  
Female Athletes ◽  
Team Sports ◽  
Team Sport ◽  
Study Data ◽  
Validity And Reliability ◽  
School Students ◽  
The Individual ◽  
Individual Sports

The purpose of this study was to compare the level of cognitive flexibility of individual and team athletes who are students. The study included a total of 237 volunteer athletes, comprising 140 males (59.1%) and 97 females (40.9%) with a mean age of 18.98 ± 2.18 years (range, 16-26 years) who were licensed to participate in individual and team sports. Study data were collected using the Cognitive Flexibility Scale developed by Martin and Rubin (1995), which consists of 12 items in total. International validity and reliability studies were conducted by Martin and Rubin, and Turkish validity and reliability studies were conducted by Çelikkaleli on high school students (Çelikkaleli, 2014). The scores of the Cognitive Flexibility Scale were found to be higher in the team sports athletes compared with the individual sports athletes (p<0.05). No difference was determined between the levels of cognitive flexibility in male and female athletes. The results indicated that the cognitive flexibility levels of team athletes are higher than those of individual athletes.

scholarly journals Validity of a Local Positioning System during Outdoor and Indoor Conditions for Team Sports

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5733
Author(s):  
Prisca S. Alt ◽  
Christian Baumgart ◽  
Olaf Ueberschär ◽  
Jürgen Freiwald ◽  
Matthias W. Hoppe
Keyword(s):  
Team Sports ◽  
Team Sport ◽  
Positioning System ◽  
Typical Error ◽  
Local Positioning System ◽  
Filtering Technique ◽  
Indoor Conditions ◽  
The Impact ◽  
And Training ◽  
Tracking Technology

This study aimed to compare the validity of a local positioning system (LPS) during outdoor and indoor conditions for team sports. The impact of different filtering techniques was also investigated. Five male team sport athletes (age: 27 ± 2 years; maximum oxygen uptake: 48.4 ± 5.1 mL/min/kg) performed 10 trials on a team sport-specific circuit on an artificial turf and in a sports hall. During the circuit, athletes wore two devices of a recent 20-Hz LPS. From the reported raw and differently filtered velocity data, distances covered during different walking, jogging, and sprinting sections within the circuit were computed for which the circuit was equipped with double-light timing gates as criterion measures. The validity was determined by comparing the known and measured distances via the relative typical error of estimate (TEE). The LPS validity for measuring distances covered was good to moderate during both environments (TEE: 0.9–7.1%), whereby the outdoor validity (TEE: 0.9–6.4%) was superior than indoor validity (TEE: 1.2–7.1%). During both environments, validity outcomes of an unknown manufacturer filter were superior (TEE: 0.9–6.2%) compared to those of a standard Butterworth filter (TEE: 0.9–6.4%) and to unprocessed raw data (TEE: 1.0–7.1%). Our findings show that the evaluated LPS can be considered as a good to moderately valid tracking technology to assess running-based movement patterns in team sports during outdoor and indoor conditions. However, outdoor was superior to indoor validity, and also impacted by the applied filtering technique. Our outcomes should be considered for practical purposes like match and training analyses in team sport environments.

Past, present, and future of the technological tracking methods to assess tactical variables in team sports: A systematic review

2020 ◽  
Vol 234 (4) ◽  
pp. 281-290 ◽  
Author(s):  
Markel Rico-González ◽  
José Pino-Ortega ◽  
Fabio Y Nakamura ◽  
Felipe Arruda Moura ◽  
Daniel Rojas-Valverde ◽  
...  
Keyword(s):  
Global Positioning System ◽  
Systematic Reviews ◽  
Team Sports ◽  
Global Navigation Satellite Systems ◽  
Positioning System ◽  
Navigation Satellite ◽  
Satellite Systems ◽  
Global Positioning ◽  
Global Navigation ◽  
Global Navigation Satellite

The main aim of this work was to review the use of technological tracking methods to assess collective spatial-positioning variables in team sports. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and PICO design for systematic reviews, study identification was performed in four databases (PubMed, SPORTDiscus, ProQuest Central, and Web of Science). Articles were selected if they focused on player position and technological tracking methods. After duplicate removal, 2194 articles were identified based on the established search criteria, of which 72 articles were selected and analysed. Semi-automatic optic-based systems, Global Positioning System/Global Navigation Satellite Systems, and local positioning systems were used in 60%, 33% and 7% of the studies, respectively. All studies that measured tactical variables by local positioning system technology in team sports used local position measurement technology. Optic-based systems were used more often in the early years to analyse collective tactical behaviour during competition. Later, Global Positioning System/Global Navigation Satellite Systems became more frequent to measure behaviour in team sports during the training process. The possibility of using the same system during competition and training will facilitate the assessment of collective tactical behaviour in team sports.

scholarly journals Review of Ultra-Wide Band in Team Sports

2020 ◽  
Author(s):  
José Pino-Ortega ◽  
Markel Rico-González
Keyword(s):  
Team Sports ◽  
Wide Band ◽  
Quality Data ◽  
Ultra Wide Band ◽  
Tracking Systems ◽  
Validity And Reliability ◽  
High Definition ◽  
Positioning Systems ◽  
Global Positioning ◽  
Electronic Performance

The use of valid, accurate and reliable systems is fundamental to warrant a high-quality data collection and interpretation. In 2015, FIFA created a department of Electronic Performance and Tracking systems, collecting under this name the more used tracking systems in team sport setting: high-definition cameras, Global Positioning Systems, and Local Positioning Systems. To date, LPS systems proved to be valid and accurate in determining the position and estimating distances and speeds. However, it is hypothesized that between LPS, ultra-wide band (UWB) is the most promising technology for the future. Thus, this chapter was aimed to make an update about UWB technology in sport: the FIFA’s regulation, manufacturer that provide this technology, the research articles that assessed validity and reliability of UWB technology, and the criteria standard for the use of this technology.

An Indoor and Outdoor Seamless Positioning System Based on Android Platform

2016 ◽  
Author(s):  
Minglei Jia ◽  
Yanqin Yang ◽  
Lei Kuang ◽  
Wenchao Xu ◽  
Tianxing Chu ◽  
...  
Keyword(s):  
Positioning System ◽  
Android Platform ◽  
Seamless Positioning ◽  
Indoor And Outdoor

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

2009 ◽  
Vol 4 (3) ◽  
pp. 381-393 ◽  
Author(s):  
Carl Petersen ◽  
David Pyne ◽  
Marc Portus ◽  
Brian Dawson
Keyword(s):  
Global Positioning System ◽  
Standard Error ◽  
Coefficient Of Variation ◽  
Movement Patterns ◽  
Positioning System ◽  
Confidence Limits ◽  
Validity And Reliability ◽  
Typical Error ◽  
Global Positioning ◽  
Further Development

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

scholarly journals An Adaptation Study of Measurement Properties for the Characteristics of Resilience in Sports Team Inventory

2018 ◽  
Vol 8 (3) ◽  
pp. 139 ◽  
Author(s):  
Recep Gorgulu ◽  
Ender Senel ◽  
İlhan Adilogulları ◽  
Mevlut Yildiz
Keyword(s):  
Factor Analysis ◽  
Team Sports ◽  
Turkish Population ◽  
Self Report ◽  
Measurement Properties ◽  
Validity And Reliability ◽  
Sports Teams ◽  
The Third ◽  
Team Resilience ◽  
Cultural Adaption

This multi-study paper reports the translation process and the validity and reliability analysis of the Characteristics of Resilience in Sports Teams Inventory (CREST) for the use of Turkish population. In three related studies, 414 team sports athletes from Turkey were sampled. We adopted Beaton et al.’s (2000) methodology for the translation of self-report measures for cross-cultural adaption studies. The first study provided content validity for an initial item set as the preliminary study. The second study explored the factor analysis of the CREST structure. The third study explored re-testing of the explored structure in a different set of participants and criterion-related validity provided. The analysis of Study 1 revealed that the items were understood by the participants and ready for application for the general Turkish population. The exploratory factor analysis in the Study 2 revealed that the CREST had two sub-dimensions as it was in the original inventory. The Cronbach’s alpha values for the dimensions of demonstrating resilience characteristics and vulnerabilities shown under pressure were 0.94 and 0.90, respectively. The Kaiser-Meyer-Olkin value was 0.94. The confirmatory factor analysis in the third study showed that the structure of the inventory was confirmed in another sports context. Accordingly, the CREST is a valid and reliable tool for use by Turkish athletes and to measure team resilience that is one of the critical determinants of team performance. Further understanding of team resilience as a process can be gain by using the CREST, especially in future process-oriented research for team sports.

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