Sunday, February 2, 2014

fitness training and fitness assessment in Junior Football

What is the value of fitness training and fitness assessment in Junior Football. AFL National Coaching Conference, Feb 1st, 2014
This was an interesting topic to be asked to present on. As a former PE teacher I worked in a school that fitness tested all students in Years 8-12 twice a year and reported those results to parents. I am aware that the idea of fitness testing students, as a form of standardised national testing in PE, periodically surfaces and is quickly opposed by the peak professional body for Health&PE in Australia, the Australian Council for Physical Education, Recreation and Dance (ACHPER). The  ACHPER SA Branch has a position statement questioning the value and validity of fitness testing in school PE http://www.achpersa.com.au/wb/pages/about-us/position-statements.php but does fitness training and assessment have any value in community sport settings like junior Australian football clubs?

My understanding of the skill acquisition literature is that the best thing coaches can do for junior players is maximise their time "with the football". I believe a better framing is to talk about physical activity accumulation rather than fitness. This directs coaches to training structures that decrease waiting times for "turns" and maximise time spent active at training. It also directs coaches to encourage players to continue their game development away from formal training through "pick up games" in the park, the backyard or on the street, or as Professor Damien Farrow illustrated in his conference session, through coach developed practice cards that players can take with them to direct informal practice outside of club practice sessions. Designing training to maximise physical activity accumulation serves the added benefit of conditioning the mind to "stay engaged in the game" for longer periods in contrast to traditional training activities involving players waiting for a turn to run off the line: in these activities players minds are able to switch off football to other distractions while they wait to re-engage with the next turn. They are not being taught to sustain a game active mind during these body and mind breaks typical of "skill and drill" training sessions.

Prioritise putting a football in junior players’ hands over fitness training and assessment

This coaching direction would be consistent with Llyod, Colley & Trebley's (2010) suggestion to identify children with low physical fitness and promote positive health behaviours such as encouraging children to be active.
Fitness training junior players is also compromised by the natural variation in biological development evident in any age group. Simply being born earlier in the year provides a benefit of greater exposure to deliberate play and practice and informal play. However, physical growth, biological maturation and behavioural development are complex and interacting contributors to physical fitness in children (Llyod, Colley & Trembley, 2010). As the diagram below shows, in a group of 8 year old footballers skeletal growth may range from 5 years through to 11 years of age.
Added to this diversity of growth and development, and therefore functional capacity, is that the majority of preadolescent children (and approximately 20% of adults) are non-responders  (Vo2 max)to fitness training (Payne & Morrow, 2003; Timmons, Knudson, Rankinen, 2010). Payne & Morrow's research suggests primary school age children show little physiological response to training (Payne & Morrow, 1993). So while there are undoubted health effects and growth and development advantages in encouraging children to accumulate the recommended minimum of 60 minutes of moderate intensity physical activity everyday, is there any real benefit in incorporating fitness training activities during football practice, especially if it comes at the expense of players spending time engaging with the football?
Game-based training can be used specifically for conditioning players for team sport participation comparable to traditional conditioning activities
There is some evidence from Association football (soccer) research to suggest that game-based training can provide aerobic conditioning comparable to traditionally fitness training activities. The benefit for junior and youth football of game-based training used for the purpose of conditioning is the potential for "fitness" training, tactical training and movement skill training to be combined into one activity that works with childrens and youths motivations to play.
SmallSidedGame’s enable HR responses to increase, similarly to some short-duration intermittent runs shown to be effective in enhancing player endurance
Dellal, Chamari, Pintus, Girard, Cotte, Keller (2008) Journal of Strength and Conditioning, 22(5), 1449-1457
adaptations were the same for football and running, but in a number of areas football training exceeded that of endurance running
P. Krustrup, J. Dvorak, A. Junge, J. Bangsbo (2010) Scandinavian Journal of Medicine & Science in Sports, 20 supplement S1, 132-135
SmallSidedGames training can provide a reliable aerobic training stimulus.
Stephen Hill-Haas, Aaron Coutts,  Greg Rowsell, Brian Dawson 2008 Journal of Science and Medicine in Sport
11(5) 487-490
SmallSidedGames containing fewer players can exceed match intensity and elicit similar intensities to both long- and short-duration high-intensity interval running...It also appears that fitness performance can be improved equally with SSG and generic training drills.
Hill-Haas SV, Dawson B, Impellizzeri FM, Coutts AJ. 2011 Sports Medicine, 41(3), 199-220
Fitness is a broad concept – it refers to a set of attributes that people have or achieve relating to their ability to perform physical activity
Generally, when I hear coaches talking about fitness training they are referring to endurance or what is sometimes called aerobic fitness. Fitness is, however, attributed to a combination of components
Speed, Acceleration, Agility, Power, Strength, Aerobic Endurance
Australian football is generally played in 1-to-30m running efforts to contest possession of the ball. Who will get to the ball first - the player with the highest speed, acceleration or aerobic endurance? Who is most likely to break away from the contest - the player with the highest speed, acceleration or aerobic endurance? Who is more likely to be able to stand their ground in a marking contest - the player with the highest speed, acceleration, core strength or aerobic endurance?
There are a lot of factors that come into play when considering a young players fitness - genetics, position that the player is suited to, chronological age, biological age, experience, how active the young person is outside of football are just a few. Again we see that it is very difficult to generalise the training of young footballers fitness.
What about Fitness Testing?
I am not an advocate of fitness testing junior and youth footballers for many of the same reasons fitness training is largely irrelevant for players at junior and youth level.
- Wide variations in biological age at the same chronological age
- Age differences of as little as 3 months impact performance scores
- Some people are non-responders to training
- Coaches not trained in the protocols of tests mean the test measurements lack validity and reliability
- Percentile based evaluative feedback fitness tests (or criterion referenced tests) confound the issue of relative fitness by failing to take maturation into account (Harris & Cale, 2006)
- Children and youth often view these tests in a negative manner. They dislike fitness testing, find it competitive or boring, and often are not motivated and prepared to participate in the various tests and this carries over into future physical activity (Silverman, Keating & Phillips, 2008).
 - The appropriateness of some fitness tests for use with children is questionable as the tests were developed for adults (eg. the Multistage Fitness Test was developed for use with elite, adult populations) and a child’s metabolic, cardiopulmonary, thermoregulatory, and perceptual responses to exercise are different from those of adults
I do believe that there may be some merit in using fitness testing to stimulate fitness education and teach about fitness concepts with junior and youth footballers. In this scenario, fitness assessments would be used as stimulus material and formatively to assist fitness education and not used as  assessment. 
At the conference, we demonstrated how closed and open drills and carefully designed small-sided games could be used for the purpose of conditioning players while practicing movement skills and game-based decision making. Day 2 Keynote, Darren Burgess demonstrated how the manipulation of game constraints, such as the size of the smal-sided games playing space, can be used for a different conditioning effect. He also emphasised warming up with the ball at all levels of game development.
In Conclusion
It is much better to focus on teaching young players the game and to focus on physical activity accumulation during practice through the use of practice task design that maximises individual activity. This includes an emphasis on game-based training that incorporates different types of small-sided games. There is also value in coaches encouraging physical activity outside of formal practice times to help children and youth to achieve the health benefits that derive from accumulated physical activity. There is also some evidence of the value of this "backyard" game play in the long term development of playing talent as young people engaged in this type of play accumulate additional game-like practice volume.
The best thing coaches of junior and youth footballers can do is to put a football in their players hands and facilitate purposeful play.

1 comment:

  1. Very well written. Keep up the good work!

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