Lumbar vertebral stress injuries in fast bowlers: A review of prevalence

February 27th, 2011 | Cricket, Quintic Video Software

M. Johnson, M. Ferreira, J. Hush*
Discipline of Physiotherapy, Faculty of Health Sciences, The University of Sydney, 75 East St, Lidcombe, NSW 2141, Australia

Objectives: To provide a concise overview of the prevalence and risk factors in the development of lumbar vertebral stress injuries in cricketers who are fast bowlers.

Methods: A search of Medline, SPORTDiscus and CINAHL databases was conducted to find relevant studies pertaining to: cricket, cricket biomechanics and lumbar vertebral stress injuries. Narrative review methods were used to synthesise the data.

Results: The prevalence of lumbar vertebral stress injuries in fast bowlers is high, with figures up to 67% reported. Potential risk factors identified include bowling action, overuse, age, lumbar muscle asymmetry and physical characteristics. While prospective studies provide evidence that bowling action and overuse are risk factors for developing lumbar vertebral stress injuries, to date there is limited evidence, largely from cross-sectional studies, regarding the other factors.

Conclusions: This study provides an up-to-date overview of the current literature on prevalence and risk factors for lumbar vertebral stress injuries in fast bowlers. This information may assist clinicians to prevent injury through early identification of risk factors. Recommendations for future research directions include further prospective investigation of the role of age, physical characteristics and muscle asymmetry in the development of such injuries as well as gender specific risk factors.

Acknowledgements : The authors would like to thank Dr Paul Hurrion from Quintic Consultancy Ltd, England and Wales, for generously providing digital images to illustrate the bowling actions.

Article history:
Received 11 December 2009: Received in revised form 15 December 2010: Accepted 17 January 2011

Keywords:
Fractures, Stress, Lumbar spine, Risk factors, Prevalence, Cricket

To view the complete academic paper, please download from the following link:
http://dx.doi.org/10.1016/j.ptsp.2011.01.002

Please note access to the full text of this article will depend on your personal or institutional entitlements.

Johnson, M., et al., Lumbar vertebral stress injuries in fast bowlers: A review of prevalence and risk factors, Physical Therapy in Sport (2011), doi:10.1016/j.ptsp.2011.01.002

Crown Copyright 2011 Published by Elsevier Ltd. All rights reserved

Video Analysis Coaching arrives at the Northants County Cricket Ground

December 17th, 2010 | Cricket, Quintic Video Software

Northants Recreational Cricket is pleased to announce a very ‘Special’ Christmas Present Offer by introducing Northants Cricket’s brand new Quintic Video Analysis software. If you’re still looking for that perfect present for a cricket mad individual, then Northants Recreational Cricket may just have the answer, with a special Christmas present offer of One to One Cricket coaching with video analysis.

The ‘Quintic’ Sports Biomechanical video analysis software uses state of the art technology to allow super slow motion analysis and progressive frame analysis – This allows coaches to give expert analysis of a player’s technique, skill and physical attributes.

The software will be used by all cricketers in Northamptonshire, from budding youngsters right the way through to the Steelbacks’ first XI.

 

Budding cricketers would receive a whole host of benefits including three one hour coaching sessions with a fully qualified ECB coach with video analysis at each session. The packages also include a ticket to one of the Steelbacks’ home t20 matches in the 2011 season.

The package will be sent in a gift Card presentation pack and costs just £150

The Present includes;

- Three one hour sessions with a Senior Coach
- Video Analysis at each session
- Memory Stick with Video Footage to review at home
- A written development plan to accompany the video footage
- A ticket for a Northants FP t20 game in the 2011 season of your choice
- Gift Card Presentation Pack

For more information or to purchase this special coaching package please contact Derek Styman on 01604-609253 or email derek.styman@nccc.co.uk

http://northantscricket.com/index.php?mod=show_news&id_nws=610

An Introduction to Quintic…

December 13th, 2010 | Quintic Video Software

Quintic Consultancy Ltd specialises in Premier Sports Biomechanics Video Analysis Software, Sports Biomechanics & Performance Analysis Consultancy. It is through our extensive biomechanics consultancy and constant liaison in the fields of elite sport, physiotherapy, podiatry and education that our three levels of premier sports video analysis software systems have evolved : Sports, Coaching & Biomechanics.

It is this unique contact that allows us to produce easy to use, market leading software systems that specialise in 2D Biomechanical Analysis. Quintic Biomechanics v17 software includes Automatic 2D Tracking…

Quintic software systems are modular with each version building on the last. This facilitates continuity and easy use of premier 2D Auto Tracking Biomechanical and Performance Analysis Software for all levels of athlete, coach, scientist and educator.

Quintic provide a complete video analysis solution with market leading analysis software, hardware packages, tutorials, FREE viewing software, training days, education packages (including case studies (Q4E) along with maintenance contracts with online / email / telephone support, free upgrades and training.

For more information please visit www.quintic.com

The V-Lite Infinity Story

December 4th, 2010 | Biomechanics Consultancy, Hi-Tec, Quintic Video Software

The Hi-Tec V-Lite Infinity story started in 2006 with a single minded goal; to build the ultimate lightweight shoe, for adventure sports performance.

Back in 2004 Hi-Tec launched the highly successful V-Lite Franchise. With the help of leading Adventure Sport athletes, including Adventure Racing World Champion Martin Dreyer, V-lite continued to push the boundaries and has evolved into a new dimension.

Take a look at the video to find out more! http://www.hi-tec.com/infinity/uk/story/

Quintic Consultancy Ltd specialises in Biomechanics video analysis software, sports biomechanics & performance analysis consultancy. Hi-Tec have been working with Quintic for 6 years to help create some of our key products, from the CDT Golf collection to the successful 4:SYS Court and Athletic ranges. With V-Lite Infinity we have concentrated on the improved performance and the prevention of injury through the key technologies used in the shoe.

For more information please visit : http://www.hi-tec.com/infinity/uk/testing/

Technology putting Olympic archers on target for 2012

November 9th, 2010 | English Institute of Sport, GB Archery, Quintic Video Software

BBC Online interview EIS biomechanist Oliver Logan with the GB Archery set-up looking at how technology , specifically the biomechanics work is helping giving the squad the edge before 2012…

http://news.bbc.co.uk/sport1/hi/archery/9155537.stm

By Nick Hope

 

To say Great Britain’s archers were disappointing at the Beijing Games would be an understatement.

One fourth-place finish at the 2008 Olympics, where they had aimed to bring home two medals, represented a poor return on the near £3m investment, and was followed by an unsavoury internal spat about coaching methods. Despite this under-performance, and unlike many of the smaller Olympic sports who had their budgets slashed in the build up to London 2012, archery subsequently saw its funding increased by nearly 60%.

And the British camp is now confident that seven English medals, including four golds, from the recent Commonwealth Games (albeit in the absence of the all-conquering Koreans) proves things are back on track. “It was an excellent haul of medals for England,” GB performance manager Barry Eley told BBC Sport.

“With England’s archers making up most of the Great Britain’s women’s Olympic team it was great to see them right up there, as it was with Alison Williamson in the individual event where we hope to do well in London.”  So where has this improvement come from? 

Many within the Great Britain camp feel technology has played a pivotal role. According to Eley, Archery GB invested a “sizeable amount” of their budget in new equipment which helps measure every aspect of an archer’s technique. “We use slow-motion cameras and special mats to analyse posture, balance and body movement, which gives us immediate feedback on optimum body position,” said Oliver Logan, biomechanist from the English Institute of Sport.

“The technology also allows us to record the archers and watch them back on the computer frame-by-frame to ensure the bow and arrow set-up is optimised for competition.” Archers take aim from as far back as 70 metres, roughly the length of three tennis courts, at a target measuring just 122cm by 122cm – which from that distance looks no larger than your fingernail. Of course there is even more to consider than simply aiming at the target.

Once released an arrow does not travel in a straight line but flies on a curved trajectory – rising then falling on its flight path to the target. Pulling the arrow backwards on the bow generates tension on the string – and the greater the tension then the straighter an arrow can potentially travel. However, it is difficult for even elite archers to consistently achieve this whilst maintaining a steady hand. As such archers will often aim away from the centre to take into account this curved trajectory. 

It is a calculation and action which becomes further complicated in outdoor events where wind variations make accuracy even more challenging. A few degrees of inaccuracy can result in not only dropping one or two points, but missing the target all together. The multi-camera setup being used by the GB team detects movement in both the bow and the arrow with frame-by-frame analysis helping archers hone their technique. “Just the slightest adjustment to one of the settings can make the difference between winning and losing, so this technology has been a really key development,” Logan added.

Veteran Leicestershire-born archer Williamson, who won a bronze at the Athens Games in 2004, is bidding to compete at her sixth Olympics in 2012 and is perhaps best placed to judge just how influential these enhancements have been. “We have benefitted hugely from the developments in technology. It has certainly evolved and the video play-back allows you to view your technique in a way that wasn’t possible before.”

“The facilities make a big difference. When I began training I had to wait for people [members of the public] to finish before we could practice, we now have our own training centre [in Lilleshall] which is just for our use. After finishing fourth in the women’s individual recurve event in Beijing, Williamson took an 18-month break from major competitions.  But she returned earlier this year and the 39-year-old proved that at she still has what it takes at the elite level by claiming two silver medals at this year’s Commonwealth Games – only being denied gold in the women’s individual event by India’s 16-year-old sensation and world number one Deepika Kumar.

“The technology helps, it keeps things fresh and it’s certainly good to access it when you need it, but I do think it’s important to be self-reliant and be able to read the conditions and your equipment yourself.”

“I’m still learning and take something new from every event so hopefully it will all come together and I will do well in 2012.” Williamson’s Commonwealth collection aside, it is worth noting that England’s other five medals all came in the compound event, which is not part of the Olympic programme. Nicky Hunt won two gold medals in Delhi and is the current world number one in the women’s compound, but she has ruled out a switch to the Olympic class recurve event. “I’ve enjoyed a lot of success this year, but to be honest the switch would be difficult and I have probably left it a bit late,” she said. However Hunt is experiencing funding issues in her event. 

Last month she told BBC Radio Suffolk that she needed £1,200 to represent her country at next year’s European Indoor Championships in Spain. Great Britain’s Olympic head coach Lloyd Brown says he has tried to tempt her over to the other archery class. “I’ve talked to her many times about it because she does have a form that would lend itself to the recurve style, but she’s the best at what she does and it’s difficult to change, we’ll have to see,” he said. At present only Simon Terry, a double Olympic bronze medallist at the 1992 Barcelona Games, Alan Wills and Naomi Folkard are ranked within the world’s top 15 recurve archers. However, UK Sport’s commitment to £4.5m of investment through to 2012 has enabled Great Britain to fund six full-time archers on an Olympic programme. In addition to Williamson, Wills, Folkard and Terry, this includes Charlotte Burgess and Larry Godfrey as well as a further 19 archers who form a part-time development team. With that and their new technology, Archery GB say they have everything in place to achieve their minimum aim of one Olympic and five Paralympic medals at the London Games.

“Looking forward I think we’re in a really good spot right now. With the facilities and the staffing we’re ready to move forward with a strong performance in 2012,” Lloyd added.

http://news.bbc.co.uk/sport1/hi/archery/9146187.stm

http://www.quintic.com/quinac/archery.htm

British Cycling… “Quintic is one of our most valuable training and competition tools!”

September 17th, 2010 | British Cycling, English Institute of Sport

Quintic video analysis software is of huge assistance to the ongoing development of our athletes at all levels, and most certainly at Olympic level. Success in our sport is highly dependant upon technical skill performance, and Quintic allows us to very accurately analyse skill performance and provide the individual athlete will clear visual information on current performance and required adjustments.

Quintic also allows us to quickly and accurately measure elapsed time of efforts in training or competition, which we then use in a number of ways to further enhance performance.

Quintic is one of our most valuable training and competition tools!

Grant White: National BMX Coach, British Cycling.

 

Quintic v17 Biomechanics Software

May 27th, 2010 | Quintic Video Software, RSscan - Footscan

It is possible to synchronise Quintic Biomechanics v17 software with RSscan – Gait & Balance software. All video files, graph and data displays can be synchronised with RS Scan data. Therefore allowing the user to access the pressure, weight distribution and centre of mass measurements synchronised with the video images. The ‘SST Controller’ software allows the user to control both software programs via the one scroll bar, yet allowing both programs to be access independently.

Quintic v17 Biomechanics Software synchronised with RSscan Footscan Software  : 210 frames per second

For more information please visit http://www.quintic.com/software/biomechanics/index.htm

Quintic Ball Roll v2.4 is launched… 200fps!!!

April 23rd, 2010 | Quintic Ball Roll

Quintic Ball Roll is the brainchild of Dr Paul Hurrion who is an internationally recognised Sports Biomechanist. Dr Hurrion is perhaps best known as Padraig Harrington’s trusted putting advisor and biomechanics analyst over the past six years. He works with many other Tour golfers including Rory McIlroy, Oliver Wilson, Paul McGinley, Robert-Jan Derksen, Lee Westwood… and also carries his top level skills, knowledge and experience into the design of his own range of putters with GEL Golf.

Dr Hurrion uses the Quintic Ball Roll Software regularly in all his analysis work. Quintic Ball Roll v2.4 software is capable of analysing up to 200 frames per second, automatically recognising markers on the golf ball, and instantly producing fully digitised analysis of each putt. The software tracks the ball for the first 30cm of the putt length. It then instantly and clearly shows the ball speed, sidespin (cut or hook), angular rotation (degrees & RPM), vertical bounce, launch angle and point at which true roll occurs.

Crucially – and this is the most significant advance on Quintic’s already pioneering analysis tools – all of the above are reflected graphically and numerically in a summary sheet in a way that was formerly only available for full swing analysis software for irons and woods. The average, range and standard deviation of the putts is automatically updated after each putt and can be saved into a session folder. It is then possible to compare session results, for example, with different types of putter, before and after changes to the loft / lie / length of a putter and before or after a putting lesson.

“The software measures the performances of the golf ball, which at the end of the day, is what matters…”

 

 

Download Demo Version (www.quinticballroll.com)

Click on the link on the front page of the website (www.quinticballroll.com) to download a free 21 day trial of the program. The Demo has preloaded putts that highlight different key elements to look for. It allows you to view these putts so that you can see the fantastic range of information it provides.

Importantly you will begin to realise the unique benefits that a full understanding of the effect of a putting action on the ball brings to your own putting style, to accurate putter fitting, to the definitive choice of the correct putter to suit the golfer’s style.

Virtually every golfer whose putting is analysed with Quintic Ball Roll will find it fascinating and will not be able to ignore the visual evidence that assistance with putting lessons is necessary. Quintic Ball Roll will then also demonstrate the effect of those putting lessons and in the following months and years the sensible golfer will have regular putting check-ups to stay on line…

 

“I cannot thank you enough for all your help over the last few weeks; I am very excited to add Quintic’s Ball Roll Software to my Putting Academy at The Club at Cordillera! The data provided by your system adds much more credibility to the skid and roll videos that I show each client currently. This information offers each student- the true “Facts NOT Opinions” about their stroke. It is really nice to actually be able to quantify what is happening as we alter a putter’s lie, loft, and length over time.

Quintic is on the verge of something great with this simple analysis tool- every serious teacher should have this software on their computer!”

Tom F. Stickney II
The Club at Cordillera

“I sold more putters in the first month I used the Quintic Ball Roll software than I did the entire previous year. It is so fast and easy to use, and gives you the results needed instantly, it completely verifies which putter is right for each customer. Thank you for putting life back into my putter sales”

Eric Simonson
Pro-Vision Golf

England Athletics & Quintic…

March 26th, 2010 | Athletics, Quintic Video Software

Get the Flash Player to see this content.

“We primarily use Quintic as a video analysis tool that allows us to implement in-session and post-session analysis, while also providing comparative analyse of techniques and movements over a period of time. Quintic enables us to compare videos and technique from today’s training session against past (and future) training sessions and competitions.

If with one of our athletes we are looking at the angles of shoulder to elbow to hand, Quintic allows us to draw this angle straight onto the video and provide the athlete with ongoing visual feedback. One of the most important ways I utilise Quintic is my post session coaching analysis, with functions like the export analysis tool and the stage by stage multi-photo sequence.

Export analysis allows me to add angle drawings, foot contact timings, coaching points and other notational analysis to the video; I can then email this video along with the free Quintic Player to any of my athletes. The extra functionality of the Quintic Player allows my athletes to watch the video and see all of my coaching points as they play the video through, scroll back and forth, use frame advance and other functions. Retaining a video copy of important training/competition notes and advice allows them access at any time.

I like the stage by stage photo sequence which breaks down the technique into a series of still images with coaching points, shapes and angles overlaid on top such as angle of dorsiflexion, angle of pole at take off, various angles throughout the jump, and lines to highlight body alignment /position. I can drop the stage by stage sequence into Word or Excel, save it as a digital image or easily send it by email /CD to the athlete as further coaching advice or for discussion…

Quintic allows me to provide advice and feedback to the athlete in this fantastic way – the athlete can access it away from the training session – in this way we keep building a pattern of analysis as we move forward throughout our training season.

Alan Richardson – National Coach Mentor
Pole Vault and Jumps : England Athletics

www.englandathletics.org

English Archery ‘hit Gold’ with Quintic software in Delhi

March 19th, 2010 | English Archery, Quintic Video Software

Quintic Testimonial : Paul Atkins of English Archery

“Quintic was chosen after comparison with other similar products. The demo was well presented covering all areas. Time had been taken to obtain clips of Archers so the presentation was personalised to us and our requirements. No pressure to buy was put on us at any time, being a British company also had its attractions. The licensing, registering and setting up of the programme for our athletes was very straight forward allowing them to be up and using it in a short space of their precious time. Within 2 hours the archers were using the system with confidence and exploring different areas that it could be applied to.

Over the 09/10 Winter training camps Quintic have attended with their pressure plate and in conjunction with the Casio high speed cameras we have been able to rectify faults and improve our teams performance. Their attitude has always been helpful and friendly regularly working longer hours to ensure all our needs had been met before departing. Backup has been excellent, always someone at the end of the phone to answer any queries we have had. Overall we have found a British company supplying a product that best suited our requirements.

The Quintic programme is very user friendly allowing the archer / analyst to be up and running with its operation in a short space of time. Our Archers have improved their scores with the aid of Quintic. We have just returned from our Test Event in India in preparation for the Commonwealth Games in October with a pleasing haul of medals, including Gold’s, from Archers who have been benefiting directly from the Quintic Analysis Software for only a few months.”

 

Andy Rikuenko of English Archery, is currently ranked 4th in the Gentlemen’s Compound GNAS Target Archery rankings for 2009.

Quintic Biomechanics v17 is used to calculate velocity of the arrow along with the technique of the individuals. This is vital to the performance analysis of archery. By knowing these values overall technique can be improved in order to achieve the optimum velocity for the task e.g. in archery hitting the target. By calculating the different types of velocities separately a comprehendible breakdown of the effect of external factors affecting performance can be achieved. As well as this problem areas can be established and in turn rectified. This is fundamental as usually it’s the small mistakes that usually go unnoticed which are responsible for an overall poor technique.

The Quintic® software provides a visual aid for calculating velocity and other kinematic values. It is a useful tool in both coaching and teaching fields as it presents data in an uncomplicated and understandable format thus making it easier for athletes/students to appreciate the velocity mechanism, and how it applies to them in their own field of sport.

All the best for the upcoming Commonwealth Games in Delhi from all at Quintic…



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