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GPS Use in Sport - Tom Fitzgerald

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A discussion of GPS use in sport and its data analysis.

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GPS Use in Sport - Tom Fitzgerald

  1. 1. GPS in Sport. Tom Fitzgerald.
  2. 2. GPS. Global Positioning Satellites. Receiver unit.  Communicates with 4 satellites.  Trigonometrically determines position. Information available.  Location, velocity, acceleration, elevation.
  3. 3. Use in Sport. Popular in team-based field sports.  AFL worldwide leader.  Cricket, Hockey, Rugby League and Union. Recent addition to sport. Low cost and portable.  Referred to as ‘Bros.’ Evolved to be suitable for competition and training.  Receiver size and athlete comfort.  Force absorption and strength.
  4. 4. Current Research. Research is currently in infancy stages.  Lacks quantity.  Differing analysis methods.  Willingness to share data. Yet to fully unlock the information.  Data interpretation.  Application to training and competition. GPS is the future of sports coaching and exercise science.
  5. 5. Accuracy. Inconsistent findings in literature.  Research methods and techniques. Positive findings.  Accurate for maximal velocity*.  Accuracy improves with duration and distance. Negative findings.  Circular paths and non-linear movement cause underestimation.  Accuracy decreases with increasing velocity*. Challenging to draw conclusions. *different studies
  6. 6. AFL Average distance covered in match 12km for all players. Midfield players have additional requirements.  3.4% greater distance travelled.  4.8% lower playing time.  17% greater exertion index. Decline in exertion index of 11% from 1st to 4th quarter. Individualized training. Wisbey B, et al. Quantifying movement demands of AFL football using GPS tracking. J Sci Med Sport (2009), doi:10.1016/j.jsams.2009.09.002
  7. 7. Rugby Union Average distance covered per match is 6.9km.  2.8km (37%) – Standing and Walking.  1.9km (27%) – Jogging.  0.4km (6%) – Sprinting. Backs do more high intensity work, greater recovery.  Forwards contact not included. Forwards have higher total movement. Greater distance covered in 2nd half.  Specifically third quarter of match.  Fatigue relevance. CUNNIFFE, B., PROCTOR, W., BAKER, J. S. & DAVIES, B. 2009. An evaluation of the physiological demands of elite rugby union using global positioning system tracking software. The Journal of Strength & Conditioning Research, 23, 1195-1203.
  8. 8. Practical Applications. Training specificity.  Sport.  Positional.  Tactical. Performance analysis.  KPI’s  Work rate.  Data and evaluation.
  9. 9. Data Analysis Considerations. Competition and training specificity.  Speed zones and distances. Data analysis methods. Decision-making and conclusions.  Further evidence and other information sources.
  10. 10. Further Research. Accuracy and validity of GPS units.  Technical evolution. Sport-specific data analysis.  Factors: equipment, environment, gender. Defining relationship between data and performance.  Correlation and causation.
  11. 11. Conclusion GPS data is a valuable coaching tool.  Yet to realise full potential. Further research required. Consistency within data analysis important. Important role for GPS in the sports coaching future.
  12. 12. Discussion. What is the future of GPS technology? Is modern-day sport too data-orientated? As a coach, how would you use GPS? Please continue the discussion with me online.  Twitter: @fitzcity or use the hashtags #sportGPSfuture #SpCP13  http://fitzcity.wordpress.com/
  13. 13. Literature References. AUGHEY, R. J. 2011. Applications of GPS technologies to field sports. Int J Sports Physiol Perform, 6, 295-310. BARBERO-ÁLVAREZ, J. C., COUTTS, A., GRANDA, J., BARBERO-ÁLVAREZ, V. & CASTAGNA, C. 2010. The validity and reliability of a global positioning satellite system device to assess speed and repeated sprint ability (RSA) in athletes. Journal of Science and Medicine in Sport, 13, 232-235. CUNNIFFE, B., PROCTOR, W., BAKER, J. S. & DAVIES, B. 2009. An evaluation of the physiological demands of elite rugby union using global positioning system tracking software. The Journal of Strength & Conditioning Research, 23, 1195-1203. DUFFIELD, R., REID, M., BAKER, J. & SPRATFORD, W. 2010. Accuracy and reliability of GPS devices for measurement of movement patterns in confined spaces for court-based sports. Journal of Science and Medicine in Sport, 13, 523-525. DWYER, D. B. & GABBETT, T. J. 2012. Global positioning system data analysis: Velocity ranges and a new definition of sprinting for field sport athletes. The Journal of Strength & Conditioning Research, 26, 818-824. GABBETT, T. J., JENKINS, D. G. & ABERNETHY, B. 2012. Physical demands of professional rugby league training and competition using microtechnology. Journal of Science and Medicine in Sport, 15, 80-86.
  14. 14. Literature References. LACHAPELLE, G., MORRISON, A. & ONG, R. Ultra-precise positioning for sport applications. proceedings of 13th IAIN world congress, Stockholm, 2009. 27-30. LARSSON, P. 2003. Global positioning system and sport-specific testing. Sports Medicine, 33, 1093-1101. VENTER, R. E., OPPERMAN, E. & OPPERMAN, S. 2011. The use of global positioning system (GPS) tracking devices to assess movement demands and impacts in under-19 rugby union match play. African Journal for Physical, Health Education, Recreation and Dance, 17, 1-8. WISBEY, B., MONTGOMERY, P. G., PYNE, D. B. & RATTRAY, B. 2010. Quantifying movement demands of AFL football using GPS tracking. Journal of Science and Medicine in Sport, 13, 531-536.
  15. 15. Photo References Satellite - http://upload.wikimedia.org/wikipedia/ms/3/34/MEASAT- 3_Boeing_601.jpg Code – http://image.shutterstock.com/display_pic_with_logo/476578/476578,1 314026326,12/stock-photo-code-numbers-computer-data-coding- 83236099.jpg Targethttps://upload.wikimedia.org/wikipedia/commons/9/98/Archery_ target.jpg Team running - http://resources1.news.com.au/images/2012/02/01/1226258/983521- israel-folau.jpg Carlton FC- http://media.sbs.com.au/news/thm/articlemain/aap_3323_9Nov_Carlto n_800x600.jpg

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