Swimming in Australia
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SWIMMING IN AUSTRALIA asctaINTERNATIONAL 2012 Conference By Julie Speechley ASCTA conducted its’ first asctaINTERNATIONAL Attendees travelled from Saudi Arabia, Taiwan, Hong Kong Conference from 10 to 13 February Thailand, Singapore, Phillipines, China, Hong 2012. Laurie Lawrence was the keynote speaker Kong and the United Kingdom. They have who delivered some fabulous presentations on all been emailed some of the conference the Do the Five campaign, World Wide Swim presentations as well as a link to a section of School and Turning Good Teachers in Great the World Wide Swim School website. Teachers. Thanks should also go to Sharon and Tony Laurie certainly provided the Teachers in Asia Wrobel who worked in partnership with with knowledge and ideas to help reduce the ASCTA and did a lot of the “leg work” in Hong high drowning toll A special “thank you” to Kong. ASCTA would also like to thank the Laurie who worked tirelessly over the four days companies who helped sponsor the event – and was a wonderful ambassador for Australian Qantas, Langham Place Hotel, Rocket Science, swimming. Thanyapura Sports and Leisure Club and the Australian Consulate- General. Other Presenters included John Konrads, Julia Ham, Ross Gage, David Speechley (Australia), Ensure early March 2013 is noted in your diary. Chew Tan, Alain Chan (Singapore), Andy Astflack The asctaOFFICE has already heard of quite a (Phillipines), Dr Violette Lin and Sharon Wrobel few Teachers and Coaches wanting to attend, so (Hong Kong). The feedback was wonderful so if you would like to travel overseas we are sure a huge “thank you” also goes to the Presenters, you will love the asctaINTERNATIONAL 2013 most of whom had to travel a long way to Hong Kong Teachers Conference. Following the present. success of the asctaINTERNATIONAL 2012 Hong Kong conference, an asctaINTERNATIONAL 2013 Phuket Coaches Conference is being planned for November 2013. 38 SWIMMING IN AUSTRALIA e the Laurie Lawrence 'Doing the Five' with a Learn to Swim Student Laurie prepares some young students for a safe future in swimming SWIMMING IN AUSTRALIA 39 Biomechanicsand Kickboards By David Speechley Some of the teaching drills and A person will float, that is stay on or near The actual body’s displacement of water progressions that swimming and water the surface of the water, if the up force (buoyancy) has not changed but the safety Teachers and swimming Coaches is more than the down force. Salt water centre of gravity has moved closer to the use are folklore handed down from one which is heavier than fresh water due to centre of buoyancy and the result is that generation to the next without question. the dissolved salt (approx 6 kilograms per the legs and hips will rise closer to the I personally encourage all Teachers 100 litres) will enable a person to float surface of the water. and Coaches to regularly question what higher as the downward force remains they are doing and why; to review the unchanged (weight of the person) but When a kickboard is used, it aids in feedback they receive from their learners the upward force has increased. You buoyancy by greatly increasing water and swimmers and to measure the could speculate that a good teaching pool displacement, however the rules of latest trends and methods against sound should contain heavy water (i.e. have salt determining the angle of floatation still pedagogy and scientific principles. added). apply. The bigger the kick board the more it will aid in holding the swimmer As an example, if you were to apply an A common misnomer is to look at up, but at what angle in the water will the understanding of science of biomechanics the angle of the body in the water to swimmer be? This will depend on where to the way kickboards are used, many determine how “skilfully” someone is the board is positioned. The closer the of the drills and progressions currently floating. This is incorrect as the angle board is to the centre of gravity (i.e. the evidenced in some swim schools and of a person floating is not improved by further back it is placed) the more the squads would be discarded. that person being lighter or floating in body will become horizontal. heavier water. The angle is determined by the body finding a balance between We know that: Thus if a kick board is held by a beginner the centre of gravity and the centre of with the arms over the board and the • A person in water has a centre of buoyancy. The angle the body is floating head out of the water the legs are most buoyancy usually located somewhere at can be changed by simply moving the likely to sink. To compensate for this about the lower sternum area centre of gravity and/or the centre of the beginner may do a number of things • Buoyancy is an “up” force buoyancy. The nearer these two pivot which are now understandable. The points get to each other, the closer to a • A person in water has a centre of beginner may pull the board back and horizontal position the body will become. gravity usually located somewhere tuck it underneath their body which will around the hip area help raise the legs (they are moving the • Gravity is a downward force Try the following to prove it. Float on centre of buoyancy closer to the centre of you back with your hands by your side gravity) or alternately utilise a kick which and your legs straight out. Stay still for will lift the legs towards the surface. The When a person finds equilibrium in the 15 to 20 seconds and find the point of most efficient freestyle kick to do this is water, the buoyant force is determined by equilibrium. Then keeping the arms in commonly known as “bicycle kicking” the amount of water displaced. The more the water, move the arms up above the which is where the feet go round in cyclic water displaced the greater the buoyant head, bend the knees and draw the feet manner. If viewed from the side this looks force. downwards towards the floor of the pool. a bit like “climbing a ladder with the By doing this you are shifting the centre feet”. If kicking Breaststroke, the most Gravity is determined by the weight of the of gravity upwards by rearranging some efficient kick to raise sinking feet towards person. body weight. the surface is a scissor kick with one foot turned in. 40 SWIMMING IN AUSTRALIA Biomechanics Incorrect positioning of kickboards If science were used to create a rule for A more advanced learner would use a leads to the acquisition of a “survival use of kickboards I would suggest it looks smaller board held under the front of kick” and undesirable kicking pathways, something like this. “The younger or less the body, whilst an 8 year old proficient not an efficient kick empathetic to a experienced the swimmer the larger the swimmer would be on an average sized swimmer. size of the board and the closer to the board with the board held out in front. As swimmer’s centre of gravity it should be proficiency improved the size of the board held.” In application this would mean can decrease even further. Remember also Sure, in advanced swimmers where a young 3 year old trying kicking for the a proficient freestyle kicker may be less some strengthening and conditioning is first time would be on a body board with proficient at breaststroke kicking so an desired, a kick board may be placed in just the legs and hips hanging of the back adjustment for how the kick board is held this previously described position. of the board. may need to be made depending on the stroke prescribed. It’s Finally Here... �������������������������������� Give your swimmers a head start with Anti Wave’s Give your swimmerslatest addition! a head start As an introductory offer you will receive free shipping of your ANTIwith Block Anti With Wave's TrackStart, latest just placeaddition! and pay for your order before November 30th 2011! (Please quote our promo code TS001.) *Only on ANTI Block with TrackStart Orders with promotional code quoted (07) 3812 2283 (07) 3812 1187 [email protected] Or Dive Into Our New Look Website - www.antiwave.com.au 41 SWIMMING IN AUSTRALIA Swimming and water safety A School Teacher’s Perspective. The number of drowning deaths in Australia is regarded by governing bodies as far too many, hence it is proposed that teachers within primary schools be utilised more efficiently in the education process. One strategy offering opportunities to gain A considerable amount of work has been Introduction swimming and water safety discipline attributed to educating the public about knowledge and subsequently qualifications, swimming and water safety awareness Data gathered indicates that Australian are Australian Swimming Coaches and in a commitment to reducing drowning drowning fatalities for not only children, Teachers Association - Swim Australia fatalities. It is acknowledged that the best but people of all ages are at a plateau, if Teacher (SAT) and Austswim – teacher of time to prepare children for safe aquatic not slightly increasing. It is alarming that swimming and water safety. participation and provide the skills and figures are not decreasing despite the knowledge needed to have a lifelong safe many well developed swimming and water association with water is during childhood. safety education programs available. From Swimming and water the perspective of a school teacher it is safety: the plateau Hence, primary schools and in particular proposed that implementation of swimming primary school teachers play a vital role in and water safety into the school curriculum, The Royal Life Saving Society Australia providing access to all children.