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Saturday, March 24, 2012

Loughborough University: the place where people "learn to win"





As an ex Loughborough student, I am very pround for the significant role that our University is currently playing in the preparation for the 2012 Olympic Games. Loughborough is indeed the place to study sports science and train for elite sports. As you may know Loughborough is now a Centre of Execellence for many sports. Many elite players use its state-of-the art facilities for their preparation for the Games.

Read what people say about their experience at Loughborough:

 "Loughborough is the best place to prepare... Everything is here: the facilities, the physios, the coaches, they've got a great medical team, so everything is perfect for my training." Laura Whittingham, Javelin thrower.


"... we want to create a place where people learn to win in all walks of life." Chris Earle, Loughborough's director of sport

To read more about the role of Loughborough in 2012 Olympic Games preparation please visit THE INDEPENDENT (24 March 2012)

http://www.independent.co.uk/sport/olympics/olympics-britains-secret-success-factory-7578100.html

Friday, March 23, 2012

Novel tests to evaluate muscle injury risk in professional football players


Source: au.eurosport.com

Muscle imbalance and in particular of the legs is considered as a risk factor for injuries in football players. To evaluate muscle strength and imbalances most practitioners use isokinetic dynamometry. However, there are a number of factors that limit the use of isokinetic dynamometry in a large number of players and thus threaten its practical applicability. The high cost of the isokinetic device, the time required to test one player (15-20 min) and the skills required by the examiner are some of them.

Hand held-dynamometers are simple devices that require no high expertise from the experimenters. Rod Witheley and his colleagues from Aspetar Orthopaedic and Sports Medicine Hospital, Qatar, published a very nice study few days ago which compares novel hand-held dynamometry tests results of knee flexion and extension with isokinetic dynamomery. Their study population was 216 male professional football players.
Their results showed:
·         Medium to high correlation between hand-held dynamometry measures and results from isokinetic dynamometry.
·         Reliability for the eccentric hamstrings, isometric hamstrings, and isometric quadriceps measures was excellent with the hand-held dynamometer.
Another strong point of the study is thepublication of normative data for hand-held dynamometry measures from a large sample of professional football players.
In my opinion, the novel measures with hand-held dynamometer described in the paper of Whiteley and colleagues will help a lot in the evaluation of football players since:
·         Measures are reliable and take only 4-5 min
·         The cost of the hand-held dynamometer is low, and
·         No specific skills are required

Reference
Whiteley et al (2012). Correlation of isokinetic and novel hand-held dynamometry measures of knee flexion and extension strength testing.  Journal of Science and Medicine in Sport, Mar 15. [Epub ahead of print]

Friday, March 16, 2012

Trainability in childhood and adolescence

Most coaches design their training programs based on players' chronological age. However, this is not the most effective way since biological maturation will affect many fitness-related components in athletes. Thus, coaches should train their players based on biological rather than chronological age. A good indicator of players maturity stage is the onset of Peak Height Velocity (PHV) or the age (A) at which players gain height rapidly. The average age for PHV is around 14 for boys although it varies widely and is affected by genes, environment etc. Before the APHV, boys could be trained based on their chronological age. After this age however, players should be trained based on their biological age.

The Long Term Athlete/Player Development Model (LTADM) is a general plan of training in children and adolescents. The LTADM was developed by  Balyi, British Columbia, Canada.

The LTADM describes five stages for players’ development:
  1. Fundamental stage (6-9 years)
  2. Learning to Train (9-12 years)
  3. Training to Train (12-16 years)
  4. Training to Compete (16-18 years)
  5. Training to Win (18+ years)

Below you can read a summary of the training targets and means for each of these stages.





Tuesday, March 6, 2012

BACK TO THE BASICS

We are living in an era of “accelerated knowledge”. We receive new, excited information that promises to make our professional life better. Have you heard about the “magic” water, the legal substances that “can boost performance”, the new training methods that will maximize training adaptations?
Much of this information lacks scientific support. The fact that something is perceived as good by a player or a coach does not mean that it can improve performance for all. Have you heard about the placebo effect? If you think that a substance or a strategy will improve performance it may actually do so without any biological effect. More importantly, it may not work the second time!
 Looking and hearing about all these I am wondering: Do we miss the basics?

Basics in training
The principles of training are:
-Specificity: In order to maximize the benefits, especially at high level, players should train with methods, exercises and speed of execution specific to their positional needs. For instance, sprint types and training structure should be planned based on match analysis (distances, intervals etc).
-progressive overload: To ensure long-term improvement training should be hard enough to stimulate adaptations but light enough to avoid over-training. Training plans should also incorporate resting periods/days to maximize adaptations (Figure 1).




Figure 1. The overload principle (source: roadcycling.uk.com)


-Reversibility or detraining: without suitable training players will lose the fitness gains.
-Individual response: To maximize performance training must be based on individual player’s needs. I would suggest a more individual approach to training planning. No matter what method you use, modern or conventional, if you ignore player’s needs you miss the point.

Think and design based on player needs
This is my conclusion so far. To maximize the benefits one must use the method, means and techniques that fit the specific situation (club, players etc). In my professional life I am always looking for scientifically proved information and try to think in a simple and clear way. This does not mean a simplistic way!
To my belief we should not forget the obvious. Sometimes the solution to the problem is in front of us but we are not able to see it. Why? Because we might spend a lot of our time looking for new, more and more attractive information. We spend our time searching and not thinking!

Saturday, March 3, 2012

A different analysis of van Persie's goal

Have you watched Arsenal's win against Liverpool today? Have you watched the goal by Robin van Persie at 92th min? (http://www.arsenal.com/home)
This is football!

Besides, fitness and tactical aspects it is also the player's ability to be at the right place at the right moment to make the right action!

To read more about it please visit http://georgenassis.blogspot.com/2011/10/be-at-right-place-at-right-moment-to.html

BIOMARKERS OF TOP PERFORMERS
http://georgenassis.blogspot.com/2011/06/biomarkers-of-top-performers.html