Category Archives: Wimbledon

Skilled Performance at Wimbledon: Pimms, Strawberries and Movement Variability

By Ben Langdown

Week 2 of Wimbledon is in full flow, as is my second week at The OU having taken on the position of lecturer in Sports Coaching within the Sport and Fitness team. As is customary at Wimbledon time, I am sat here typing this with a punnet of strawberries and cream and a glass of Pimms in hand, flicking my eyes left to right, and back again as a pressurised ball of yellow fluff gets whacked across a taut net and to within millimetres of a chalked line at the back of centre court! Murray is through to the quarter-finals for the 9th consecutive year after beating Nick Kyrgios comfortably in Monday’s last 16 match. This was despite Kyrgios achieving 90% accuracy on his first serve through the first set, 84% over the whole match and averaging 124mph! Murray wasn’t quite as accurate with a mere 64% of his first serves finding the service box, but did clock up an impressive 130mph fastest serve. So how are these top players able to serve the ball so fast but also be so consistently accurate?Sliced strawberries

First, let’s go back to my refreshments, the strawberries and Pimms are very relevant here I must add…Successfully picking up the glass of Pimms and guiding it to my mouth to have a swig without spilling any has resulted from me developing the ability to self-organise hand-to-glass and then glass-to-mouth movements when I was much, much younger! However, novice movements aren’t this smooth and successful. At first new movements are often robotic in nature, consciously controlled and performed using rigid coordination. This is the beginner’s attempt to simplify the skill as much as possible by freezing some of the possible movements in their joints. This is what we call, freezing degrees of freedom (the number of possible movements available at each joint involved in the movement) which allows a beginner to limit the amount of movement variability and achieve more success when first learning a skill. They may not use the most efficient or effective technique but they can achieve an outcome i.e. having a drink!

Whilst novice performances are characterised by this freezing of movements, dynamical systems theorists suggest that the variability in movements, in response to task goals, is an intrinsic part of skilled motor performance and as a result allows performers to adapt and be flexible in their dynamic sporting environment. Often there is a lot of ‘detrimental movement variability’ that impacts upon our success as a novice learner and this is why a lot of mistakes will be made (in my example – drinks spilt!). As we progress, we learn to “unfreeze” our joints’ degrees of freedom, allowing an increased number of movement combinations to be effectively self-organised in response to the goals of the task. So, in my example I can successfully drink from the glass by moving it from the table to my mouth on a variety of trajectories / movement paths, the glass may be at different angles each time, my hand may be holding the glass lower down or higher up, there is no set “motor programme” as was once thought, variability is a part of movement and as long as I am aware of how to adapt my movements to reach the end goal then I will get the glass to my mouth successfully. Through practise we are then able to use this ‘functional variability’ to become successful at performing the task in different environments and with varying constraints imposed on us as performers.

Tennis Serve

This also applies in tennis; the elite players we witness over the fortnight at SW19 are able to benefit from the practise they have put in to allow successful 1st serves to emerge from constraints in three interacting areas: the task, the environment and the player:

Task Constraints (the 1st serve): e.g. where they want to hit the serve, what spin do they want to place on the ball, the rules governing the service, how high has the ball been thrown etc.

Environmental Constraints (Centre Court): e.g. the crowd, the wind – irrelevant when the roof is closed on centre court!

Player Constraints: e.g. how much range of movement do they have in their shoulder, are they carrying a niggling injury that’s causing them pain, what state of mind are they currently in, are they focussed on the task in hand or have they just thrown away an easy point etc. The second set of Monday’s match demonstrated this point nicely where Kyrgios appeared to give up!

Figure 1.0 Dynamical Systems Theory adapted to the 1st serve in tennis: The serve emerges from the interacting constraints.

So how does a novice progress to the level of skill we see at Wimbledon? When attempting a serve, beginners may miss the ball, or hit into the net as they try to coordinate all the movements available at their shoulder, elbow, and wrist. Excluding the movements in the hand (which will be gripping the racket), there are 7 degrees of freedom in the arm:

  • 3 possible movements in the shoulder
  • 1 in the elbow
  • 3 in the wrist

Coordinating these can be a tricky task, hence why variability in the movements of these joints can lead to unsuccessful serves. It is also possible to see why beginners would freeze the lower body and even the wrist and elbow movements to make the serve easier to control (coaches often call this a frying pan service with just the arm moving and no turn of the hips!). In order to hit the ball like Murray and his peers at over 130mph the rest of the body also needs to be self-organised…for now though, we’ll freeze that discussion and just stick with the arm and racket!

Research (e.g. Bootsma, & Van Wieringen, 1990; Betzler, et al., 2012) has shown that when performing the same task over and over elite performers are able to “zero in” on contact with a ball and in this tennis example, serve the ball from the centre of the racket. This means that as the ball is tossed into the air the player can utilise functional movement variability to adjust the position of the racket as it moves towards the ball. Then, as they approach the critical moment of the serve (i.e. impact between the centre of the racket and ball) the amount of variability is reduced to produce consistency from serve to serve. Novice players do not demonstrate as much ‘funnelling’ of variability which is where the mistakes and unsuccessful serves emerge from. Ok, it’s easy for me to say this sat here at a desk munching on strawberries…but try achieving a 90% success rate at over 120mph for a whole set in front of a centre court crowd, the majority of whom want you to lose to their British hopeful!

I don’t want to fool anyone here, elite players do still suffer from detrimental variability in their movements and this is evident when double faults creep into their game, but let’s face it, it doesn’t happen as often as us mere mortals when on the court playing much slower serves!

So, back to my strawberries and Pimms…the constraints on the goal of getting them to my mouth are currently far less daunting than being out on centre court, racket in hand, with 15000 people watching on, and trying to serve at 135mph into a 283.5sqr.ft service box! I feel the environment and my own ‘performer’ constraints alone would be far too imposing, and that’s before I even consider the task!

Enjoy the rest of Wimbledon and look out for those service stats! Cheers!

Useful references:

Bartlett, R., Wheat, J., & Robins, M. (2007). Is movement variability important for sports biomechanists? Sports Biomechanics, 6(2), 224-243.

Betzler, N.F., Monk, S.A., Wallace, E.S., & Otto S.R. (2012). Variability in clubhead presentation characteristics and ball impact location for golfers’ drives. Journal of Sports Sciences, 30(5), 439-448.

Bootsma, R.J., & Van Wieringen, P.W.C. (1990). Timing an attacking forehand drive in table tennis. Journal of Experimental Psychology: Human Perception and Performance, 16(1), 21-29.

Davids, K., Glazier, P.S., Araújo, D., & Bartlett, R.M. (2003). Movement systems as dynamical systems: The role of functional variability and its implications for sports medicine. Sports Medicine, 33, 245-260.

Gurfinkel, V.S. & Cordo, P.J. (1998). The scientific legacy of Nikolai Bernstein. In M.L. Latash, (Ed.), Progress in motor control: Volume one, Bernstein’s traditions in movement studies (pp. 1-20). Champaign: Human Kinetics.

Langdown, B.L., Bridge, M., & Li, F-X. (2012). Variability of movement in the golf swing. Sports Biomechanics, 11(2), 273-287.

Newell, K.M. (1986). Constraints on the development of coordination. In M.G. Wade & H.T.A. Whiting (Eds.), Motor development in children: Aspects of coordination and control (pp. 341-360). Boston: Martinus Nijhoff.

Parenthood and Tennis – the challenge of being an athletic parent

By Candice Lingam-Willgoss and Jessica Pinchbeck

A glance at the top seeded men and women at Wimbledon this year reveals an interesting contrast in terms of family. While Djokovic, Federer and Wawrinka all have young families none of the top ten seeded women in this year’s tournament have children. While sporting mothers are not an uncommon concept, it seems within the world of tennis motherhood and being a professional athlete are a harder combination to balance, with research in the field recognizing how pregnancy and motherhood are key reasons why female athletes may end their career. (Nash, 2011). There is no hidden reason why so few female players give birth during their career, and these are in no way unique to tennis, very few women want to harm their career in their twenties whether that is sporting or otherwise, but perhaps more importantly for an athlete is the physical impact that pregnancy and having a baby can have on a woman. For the better part of a year if not longer the competitive regime is gone, add to that the return to playing which sees huge demands on an athlete in terms of time and travel which can prove almost impossible to handle, with tennis involving if not the most travel demands of any sport.

There are however, examples of tennis players who have managed to successfully combine the two worlds of motherhood and professional tennis, one such player is Lindsay Davenport, a player who is reported to have planned her first pregnancy and only retired when pregnant with her second child. While the demands of tennis may mean it is difficult for a woman to continue to have a competitive career after children there seems to be little negative impact on actual performance. Take Kim Clijsters, who retired from tennis to have a family but made ‘The Mother of All Comebacks’ when she won the 2009 US Open a couple of years after retiring just 16 months after giving birth to Jada Ellie.

It is clear that women who do return to sport following their pregnancy come back as different athletes. Of the women who have made it to the third round of Wimbledon Dellacqua is possibly the only player to spend a night on the floor, taking a turn lying next to her son’s cot the night before a crucial 2nd round match. Dellacqua has highlighted how having her son has led to a shift in priorities and even credits being a mother as “helping me in lots of ways” saying that having another mouth to feed had only made her more focused on her career.

This change in focus is something echoed by Heptathlete Jessica Ennis-Hill, “Before I had Reggie, it was all about me, me, me,” she said recently. “Now Reggie comes before everything else, but I’m still really competitive. I want to be there, and be at my best again.” But she also recognises that it is hard to do, “I’d be lying if I said there hadn’t been days when I thought, ‘I’m not sure I want to do this, because this is really, really hard.’ I thought, ‘I’ve already become Olympic champion. Do I want all the stress again?’ But I have to give it a go. I don’t want to look back and think, ‘Oh, maybe I could have done it.’ This could explain why some women wait until they retire until they have a family as it makes the job of professional athlete so much harder. As Palmer and Leberman (2009) note it isn’t just the sleepless nights often it is the management of the multiple identities of athlete and mother that can prove difficult, with constraints such as guilt, lack of time and lack of support all being potential barriers to a smooth transition back into sport which explains why more elite female athletes choose to wait until they retire to have a family.

Although men don’t experience the physiological repercussions of having a baby, as evidenced by Federer returning to tennis 6 days after the birth of his twin boys, they are still subject to the psychological impact of becoming a parent and having to balance family life and the demands of being a professional tennis player. In the last 25 years there are only nine players that have won grand slams as fathers. Federer however has accomplished winning grand slams and holding the world number 1 ranking since becoming a father and the key to his success may well lie in the fact that his wife and children frequently travel to tournaments with him, thus alleviating the psychological stress of having to spend long periods of time away from his family. Djokovic became a father in 2014 and won his first grand slam as a father earlier this year beating Andy Murray to win his fifth Australian Open Title. Replicating the views of Ennis-Hill and Dellacqua Djokovic feels fatherhood has benefitted his career and his approach to tennis claiming ‘I think it has a deeper meaning, more intrinsic value now to my life because I am a father and a husband’. Taking advice from Federer and his methods of balancing fatherhood and tennis Djokovic’s family often travel with him to tournaments and this year he took time off before Wimbledon to spend time with his family.

This all sounds like an easy solution however it should be noted that both Federer and Djokovic became fathers while already having established careers and are typically wealthy and successful enough to travel with their family to various tournaments or to take short breaks from the sport. Other professional tennis players with less lucrative earnings aren’t quite as lucky. Ivo Karlovic has an ATP ranking of 25 but talks of the struggles he experiences spending time away from his wife and daughter and relies on Skype to keep in touch.

In a 1984 study of analysing magazine articles on leading male and female professional tennis players for males the status of star professional athlete superseded other statuses such as husband and father, however for the women players the status of female took priority over the status of athlete. However after watching and reading the Wimbledon media coverage the role of the father has become more prominent in male tennis with increased media coverage on stars such as Nadal and Federa and their role away from the court as fathers and husbands.

John McEnroe admits that having children brought out the best in him, describing how often on the tennis circuit players lose touch with reality but having children changes that. Karlovic acknowledges that having a child does change things for a father stating that before having a child everyone is a little bit selfish but once you have a child life completely changes and everything is about the child. Research also suggests that fatherhood ‘may lead to a decrease in the output of cultural displays (behaviour used by males to compete for potential mates, such as the competitiveness in sport) which could have a negative effect on sports performance. Studies also document that married men and in particular married fathers have lower testosterone levels but to date there is no research on the effect of this on tennis performance. There is also a lack of sufficient data on fatherhood and the role that social and familial status has on sporting performance.

So whether you are a professional tennis player and a mother or a professional tennis player and a father it would appear that parenthood brings about change and challenges men and women in different ways. Some of the change incurred has a positive effect on a player’s career and some of the transitions to being a parent may be difficult to manage alongside the lifestyle of being a professional athlete.

Where have all the teenage tennis prodigies gone?

By Jessica Pinchbeck

Over the years tennis has seen many teenage stars grace the courts and defeat their more senior competitors. One of the youngest teenage tennis prodigies was Jennifer Capriati who turned professional and had attained top 10 status by the age of 14 in 1990. However following her successful teenage years of tennis Capriati experienced many issues away from the court and ended up taking a year out of the game in 1995. Following this she resumed her career and won three grand slam titles before retiring in 2005. Martina Hingis also reached great heights at a young age becoming the youngest ever player to win a match in a grand slam at 14 and at 15 the youngest player to ever win at Wimbledon in 1997. Injury forced her to retire at the age of 22. For both of these cases one must surely question the physiological and psychological implications of achieving excellence at such as young age. Monica Seles and of course Serena and Venus Williams also spring to mind when thinking of teenage tennis prodigies, all of whom specialised in tennis from a very young age. However it would appear that teenage prodigies are few and far between in the modern game and in Wimbledon this year 18 year old Belinda Bencic and 17 year old Ana Konjuh are the youngest top ranked players to watch.

This decrease in the number of teenage prodigies hitting the top world rankings is also replicated, possibly even more so, in the men’s game. In the past we have seen Boris Becker win Wimbledon at the age of 17 in 1985 and Michael Chang taking the title at Roland Garros aged 17 in 1989, with other teenage stars such as Bjorn Borg and Rafael Nadal winning Grand Slams under the age of 20. However top ranked male tennis players under the age of 20 are becoming rarer in the modern era and this year Borna Coric aged 18, is currently ranked at 40 but failed to take his Wimbledon journey any further after losing to Andreas Seppi in the second round.

So why is this the case?

The age at which children should ‘specialise’ in one sport is always a discussion point and early specialisation has frequently been fuelled by Eriscsson’s 10,000 hour rule with early specialisation in one sport being reported as the only way to accrue this amount of practice and achieve expertise. With the majority of research on 10,000 hours conducted outside of the sports domain Ericsson’s theory has received some criticism within sports research with the majority of studies concluding that early specialisation is not an essential part of elite athlete development. Instead sports can be classified as either early specialisation or late specialisation sports which is dictated by the age at which peak performance is typically attained. Those sports classified as early specialisation sports include diving, figure skating, and gymnastics where early sport-specific training around the age of 5 to 7 is traditionally seen as the route to achieving excellence. Late specialisation sports consist of all other sports including racket sports, where there is no advantage at specialising in just one sport at an early age.

Back in 1988 Carlson investigated the development of 10 elite tennis players in Sweden and remarkably found that non-experts engaged in more tennis during early adolescence than the expert group. The results showed that the non-experts specialized in tennis by age 11, while the experts did not specialize until age 14, concluding that ‘early life specialisation did not benefit the development of elite tennis players’. So is the current lack of teenage prodigies due to the combination of evidence and common sense prevailing and young tennis stars being encouraged to sample a range of sports and specialise in tennis at a later age?

Interestingly this shift at the top does not appear to be preventing early specialisation from occurring. A study of 519 US Tennis Association junior tennis players found that 70% began specializing at an average age of 10.4 years old. There are also reports in the media of young child prodigies such as Jonah Ziff who appeared in national papers aged 2, 8 year old Diego Quispe-Kim and 9 year old Gabby Price. Of the young Wimbledon stars this year Bencic remembers playing tennis at the age of two with her her father (and coach) and at just 4 years old began training at the Melanie Molitor tennis school. Ana Konjuh started playing tennis at 5 years old and left home at the age of 10 to develop her tennis career. Borna Coric also started playing tennis at age 5. So in Wimbledon this year we have a few examples of early specialisers that have managed to break through and it will be interesting to see the path that their careers take as a result of such early specialisation. However the question remains as to what is happening to the rest of our young tennis stars?

Assessing the evidence there would appear to be two possible answers to this question. The first explanation attributes the lack of youngsters at the top of the sport to the increased speed and strength of the modern game whereby players, particularly in the men’s game, need to be physically mature to be able to cope with the demands of the game. In addition careers are now lengthier with improved training methods and advancing sports science knowledge keeping players injury free and physically and mentally match-fit for longer. The second conceivable answer is that intense specialisation at an early age is having a detrimental effect on the performance of young tennis players and may even be causing young tennis stars to burnout and dropout before they reach their peak performance age. Studies show that youth sport is becoming increasingly competitive which in turn has led to children taking part in extensive training, specialising in one sport at a young age, and playing large numbers of competitions at young ages. The result of this is an increasing occurrence of overuse injuries and burnout. John O’Sullivan author of ‘Changing the Game’ reveals in the US that a shocking 70% of children drop out of sport by the age of 13!

So whether it is due to the increasing demands of the current game creating a longer road to the top or the fact that tennis continues to encourage early specialisation at the risk of future champions losing motivation and burning out or withdrawing from the sport, either way it is highly unlikely that the pattern of teenage champions as young as Hingis, Becker and Capriati will repeat itself any time soon.

Sport can help with your asthma if you learn how to listen to your body

By Helen Owton

It’s Wimbledon season again and many will be wondering whether champions Petra Kvitova and Novak Djokovic will repeat their 2014 winning performances; it’s worth remembering that both are asthmatic.

There are more than 230m people in the world with asthma and attacks result in a hospitalisation every seven minutes.

Sport can be a double-edged sword for people with asthma and even in the best of weather exercise can act as a stimulus, narrowing the airways and making it difficult to breathe. Around 80-90% of sufferers have exercise-induced asthma, which can trigger symptoms such as coughing, wheezing, tightness of the chest and breathlessness which can be caused by heat and water losses during exercise hyperventilation or endless streams of allergens such as pollution and pollen. If symptoms progress and become more severe, it can lead to a full-blown asthma attack where an overproduction of mucus further narrows the airways and limits oxygen intake.

So during May through to August, high pollen and pollution levels many are urged to reduce activity levels outdoors and keep their inhalers (normally the reliever) with them.

Yet, as Asthma UK points out, eight out of ten people with asthma aren’t doing enough exercise and as we know exercise has a number of positive effects including helping the heart, bones and digestive system to stay healthy, reducing stress and insomnia, and keeping unwanted weight off.

Mark Foster in 2008: has spoken about training with asthma.
Mark Foster/Flickr, CC BY-NC-SA

Other well-known sports asthmatics include swimmers Ian Thorpe, who reportedly took up sport as a way of dealing with his asthma, and Olympian Mark Foster, who has said “swimming can actually help because it teaches you breath control and how to make the most of your lung capacity … we are taught the best way to use all of our lungs not just a small part.” Foster said that in addition to taking a puff of his inhaler before every race, his coaches also kept a careful watch on his lung capacity and peak flow levels. Kvitova has said that she suffers worse symptoms in certain places and often arrives early before a tournament begins so her lungs can adjust.

Listening to your body

Sport can act as a distraction from asthma triggers and a way of ignoring the body. But asthma and sport are both central body experiences, that benefit from listening acutely to breathing patterns. Good breathing technique is fundamental to sport – and used alongside specific training designed to help professional sports people with their asthma, it can improve the experience of asthmatics.

Listen in.
Jogging by Shutterstock

“Deep listening” is an activity that requires careful, attunement to the nuanced and multiple layers of meaning enmeshed in sound. Asthma includes listening to sounds from the body: noisy heavy breathing, wheezing, coughing, panting, spluttering and sneezing. Some athletes develop acute attunement by identifying very subtle changes in their bodies in an attempt to anticipate and monitor their asthma and breathing.

Not only do athletes develop “deep listening” to their bodies, but “acute attentiveness to and active steadying of respiration, together with conscious efforts to relax and keep calm” is also required. With the benefit of experience and a developed attunement to their bodies’ responses, some sportspeople can learn what to expect during their sporting participation enabling them to feel more in control.

Therefore, many sportspeople can be more aware of their limitations when exercising, more in control of their breathing and know when not to push it to the max to avoid the onset of an asthmatic episode.

In research we carried out, some sportspeople said that, in general, they “did not listen to their bodies”, which often had later consequences such as a sudden onset of asthma after training or competing, along with feelings of panic and a reliance on an inhaler as a quick fix.

On the other hand, those who said that they “listened deeply” to their bodies, articulated an intelligent form of knowledge about their bodies which meant that while they couldn’t always engage in more activities, they did enjoy the activities in which they were able to participate and asthma seemed to be less disruptive to their daily lives.

Nonetheless, there are limits to the predictability of asthma and there are incidences where there can be an endless stream of potential allergens which takes conscientious efforts, precautionary measure and monitoring of bodily reactions.

The Conversation

Helen Owton is Lecturer in Sport & Fitness at The Open University.

This article was originally published on The Conversation.
Read the original article.

Wimbledon is here – finally the summer of sport begins

By Simon Rea

This summer in the absence of an Olympics Games or major men’s football tournament sports fans are relying on events such as the women’s Football World Cup, the first European Games in Baku and the ICC women’s championships for entertainment.  From Monday 29th June this will be supplemented by two weeks of Wimbledon fever and a supply of tennis from lunchtime to bedtime.  The British tennis fans will be asking whether all our hopes of glory rest with Andy Murray or can any other British players have a good run in the tournament.

TennisBallNetSky

Image courtesy of PinkBlue at FreeDigitalPhotos.net

Who will win?

The men’s singles and women’s singles could not be more different at the moment in terms of predictability.  If asked most people would answer that one of four, possibly five, men will win the men’s title while it seems that anyone could win the women’s title.

Women’s tournament

Serena Williams is once again the favourite for the women’s title and has been in spectacular form winning the last 3 major tournaments.  Most recently she won the French Open on her less favoured surface of clay but she hasn’t won Wimbledon since 2012.  Is she overdue to win or is her time at Wimbledon over?  If not Serena then two time winner and defending champion Petra Kvitova must be a favourite to succeed or Maria Sharapova, who has not won since 2004. These three stars of the game are joined in the top 5 by Simona Halep of Romania and Caroline Wozniacki of Denmark, both of whom have appeared in Grand Slam finals. Personally, I think this may be the year for Wozniacki who has underperformed at Wimbledon but in the last two years her performances have steadily improved and she has gained the consistency needed for success.

Men’s tournament

Novak Djokovic is favourite for the men’s title just ahead of Andy Murray.  They recently shared an epic semi-final on clay at the French Open that Djokovic just won before he was beaten in the final by Stanislas Wawrinka.  We are living through probably the toughest era in men’s tennis where four men, Djokovic, Federer, Nadal and Murray, have been competing for the major titles.  There has often been a rivalry between two players but never have we had four of the best players ever to play the game competing in the same era.  This has meant that each man has had to raise their game and work on every weakness to remain competitive

I think that this year may be Andy Murray’s year to win a second title.  Firstly, he came very close to beating Djokovic after producing incredible tennis to drag himself back from two sets down. Djokovic is probably his closest rival at the moment and grass courts represent Murray’s favourite surface.  He recently replicated his form of 2013, when he previously won Wimbledon, at the Aegon Championships to win the tournament convincingly.  His form has been up and down over the last two years but he finally seems fit and strong after his back surgery towards the end of 2013.  Murray needs to ensure that he doesn’t lets his opponent back into the match during the second set after he has won the first.  If he can show his ruthless streak he would be very well placed to succeed this year.

Are there any other British players to watch out for?

Heather Watson and Laura Robson are now well established on the tennis circuit but Robson has only recently overcome a wrist injury that had kept her side-lined for 17 months.  Watson is joined in the top three British women by Naomi Broady and a relative newcomer, Johanna Konta.  Konta is Australian born and has never got beyond the first round at Wimbledon, however, she performed impressively at the pre-Wimbledon Aegon tournament in Eastbourne where she knocked out 2 top-20 players so she is definitely one to watch.

British men’s tennis has a new number two in the shape of Aljaz Bedene who is ranked 74 in the world and has held a British passport since March, having moved to Britain from Slovenia seven years ago to develop his tennis career.  It is the first time since the days of Henman and Rusedski that Britain has had two men in the world’s top 100. He has never won a grand slam match but is one to watch to see how he responds to the fervent support of the British public.

This summer may be quieter than others but hopefully along with the England women’s football team and England cricket teams there will be plenty of success to savour.