My Research

The aim of this page is to show the research I am doing in judo performance, what other research I am involved in and how this is beneficial to the judo community. I am currently a full-time member of staff at Anglia Ruskin University and therefore am expected to conduct research as part of my work.

PhD
I completed my PhD thesis in September 2017 and my viva in November 2017. The title of my thesis was “A time-motion, technical and tactical analysis of lightweight women’s judo.” The aims of the work were to:

* To develop an understanding of the technical aspects of lightweight women’s judo
* To develop an understanding of the tactical aspects of lightweight women’s judo
* To understand the physiological demands of lightweight women’s judo from a time-motion perspective

Some might ask why this is important. Well, in the UK, high-performance judo has a budget for London, Rio and the Tokyo Olympic cycles have been between approximately £7.5m – £7.9m per cycle of taxpayers money. For argument’s sake, lets say this is split 50/50 for men and women, that is almost £1m per year of taxpayers money to get a maximum of 7 Olympic medals. If we were spending this much taxpayers money on anything else you would expect the delivery system to be very well researched so why not judo?

Much of the currently available research is dated, it is based upon old weight groups and old rules. There is also little research that focusses on both men and women and virtually none that is solely on women.

Developing an understanding of how women’s judo is different from men’s can inform coaches of how best to train female judo players.

Supervisory team:
Professor Mike Cole
Dr Mike Callan
Adrian Scruton

you can download a copy of my thesis here –  Thesis – LW womens judo – ammended copy

Other research I am currently working on includes:

• Undulating periodisation and the menstrual cycle in female judoka
• Monitoring training load in judo athletes
• Tapering in judo athletes
• The use of athlete analyser in monitoring performance judo athletes
• Talent Identification in judo
• Talent development in judo

 

 

Published Research to date:

Challis, D.G., Scruton, A., Cole, M., Collins, N., and Callan, M. 2018. The Awarding of Penalties in Lightweight Womens’ Judo. 5th European Judo Science and Research Symposium. Porec, Croatia.

Calmet, M., Pierantozzi, E., Sterkowicz, S., Challis, B. and Franchini, E., 2017. Rule change and Olympic judo scores, penalties and match duration. International Journal of Performance Analysis in Sport, pp.1-8.

Miller, G., Collins, N., Stewart, M., & Challis, D.G. 2015. Throw type and technique efficiency of nage-waza  used in the 2013 Junior and Senior British Judo Championships. International Journal of Performance Analysis in Sport. Volume 15, Number 1.

Challis, D.G., Scruton, A., Cole, M., and Callan, M. 2015.  A Time-Motion Analysis of Lightweight Women’s Judo in the 2010 World Championships. International Journal of Sports Science and Coaching. Volume 10, Issue 3.

Collins, N. & Challis, D.G. 2013. An Analysis of Kumi Kata at the Junior and Senior British Championships 2013. 8th International Judo Federation World Judo Research Symposium. Rio de Janeiro, Brazil.

Challis, D.G. 2013. A Temporal Analysis of the u52kg Women’s Judo in the 2010 World Championships. 8th International Judo Federation World Judo Research Symposium. Rio de Janeiro, Brazil.

Challis, D.G. 2011. A Temporal Analysis of the u48kg Women’s Judo in the 2010 World Championships. 7th International Judo Federation World Judo Research Symposium. Paris.

Santos L., Fernández-Río J., Ruiz M. L., Del Valle M., Callan M., Challis B., Sterkowicz S. 2014. Three- dimensional assessment of the judo throwing techniques frequently used in competition. Archive of Budo, 10, 107-115.

Challis, D.G. 2013. Talent Identification in Judo. Unpublished data. (Research on behalf of International Judo Federation coaching academy).

 

Callan, M. & Challis, D.G. 2012. Top 8 Judo 2012 Olympic Qualification Ranking List – Tracking Study. Presented to UK Sport and the British Judo Association.

 

Challis, D.G. 2009. A comparison of two methods of coaching judo to 9-11-year-olds. 6th International Judo Federation World Judo Research Symposium. Rotterdam.

Challis, D.G. 2007. The Implementation of Long-Term Athlete Development: A Case Study. 5th International Judo Federation World Judo Research Symposium. Rio de Janeiro. Challis, D.G. 2006. Talent Identification in British Judo. Unpublished data.

 

Book chapters:

Challis, B., 2018. Periodization and Planning of Training for Judo. In: Callan, M., 2018. The Science of Judo. Routledge. Ch 11.

Challis, B. and Mataruna, L. 2018. Notational Analysis for Judo. In: Callan, M., 2018. The Science of Judo. Routledge. Ch 14.

 

Currently working on or work submitted and being reviewed:

Challis, D.G., Scruton, A., Cole, M., Collins, N., and Callan, M. TBC. A Technical and Tactical Analysis of Lightweight Women’s Judo at the 2010 and 2014 World Judo Championships: Effects of Rule Changes. TBC

Miller, G., Nevison, C., and Challis, D.G. TBC. A Technical profile of nage-waza used by Judoka from Great Britain, and top four nations at the 2015 Baku Grand Slam. TBC

Collins, N., Miller, G. & Challis, D.G. TBC.  A comparison of kumi-kata  across age, gender and weight categories in British Judo. TBC

Challis, D.G., Scruton, A., Cole, M., Collins, N., and Callan, M. 2017. A Temporal Analysis of Lightweight Women’s Judo in the 2016 World Judo Championships: Effects of Rule Changes. TBC

 

Journal Articles reviewed by me:

Sterkowicz-Przybycien, K., Miarka, B., & Fukuda, D. H. 2017. Sex and weight category differences in time-motion analysis of elite judo athletes: Implications for assessment and training. The Journal of Strength and Conditioning Research.

Miarka, B., Sterkowicz-Przybycien, K., & Fukuda, D. H. 2016. Evaluation of Sex-Specific Movement Patterns in Judo Using Probabilistic Neural Networks. Motor Control, 1-29.

Miarka, B., Branco, B. H., Vecchio, F. B., Camey, S., & Franchini, E. 2015. Development and validation of a time-motion judo combat model based on the Markovian Processes. International Journal of Performance Analysis in Sport, 15(1), 315-331.

Adam, M., Smaruj, M., & Laskowski, R. 2014. A Technical and Tactical Profile of the Double Olympic Judo Champion: A Case Study. International Journal of Sports Science and Coaching, 9(1), 123-138.

Pujszo, R., Marek, A., & Kuźmińska, A. 2014. The course of the judo fight in the heaviest category (+ 100kg) seen from the perspective of attacks in the standing position, based on the Olympic Games in London 2012. Ido Movement for Culture. Journal of Martial Arts Anthropology, 14(1), 63-71.

Lage, I. P., Gutiérrez-Santiago, A., Foguet, O. C., & Argilaga, M. T. A. 2013. Knowledge of Error in Relation to the Teaching and Learning of the Osoto-Gari Judo Throw. International Journal of Sports Science and Coaching, 8(1), 53-62.

Sterkowicz, S., Sacripanti, A., & Sterkowicz_Przybycien, K. 2013. Techniques frequently used during London Olympic judo tournaments: a biomechanical approach. Archives of Budo. Issue 1 vol 9.

 

Postgraduate Supervision:

Glenn Miller (Ph.D student) – A Technical profile of Nage-waza used at world ranking events.

Tara Fitzjohn (MSc student) – Is profiling athletes using performance analysis a beneficial coaching tool?

Rio Will – Undulating periodisation and the menstrual cycle in female judoka

If you are interested in doing judo research or in doing a judo based Ph.D and would like to discuss doing with of these at Anglia Ruskin University please email me at bob.challis@anglia.ac.uk.