Post by pttrackcoach on Feb 23, 2007 16:35:40 GMT -6
Does anyone have an opinion or research to indicate a 10 year old child participating in the shot put event with a 6lb. shot is appropriate or not. I was at a meeting and coaches turned it down because of bad advice and outdated opinions. Kids that age play football, do push ups, climb ladder walls, pitch, do archery etc and I think all of these activities are appropriate as long as the coaching is competent. Thoughts?
Post by Mianfang Ruan on Feb 27, 2007 14:45:34 GMT -6
I think you may be correct. The question should be "what is the appropriate way for 10 year older child participating in shot put", rather that "is shotput appropriate for 10 years old child". A friend of mine has been doing research on shot put for many years. You can go to his website and email him for more details : www.hpcsport.com//index.php?option=com_contact&Itemid=3
Post by rodwhiteley on Mar 1, 2007 20:56:10 GMT -6
I'D agree with the earlier posts that advice to largely 'do nothing' until you've finished growing is no longer the benign platitude that we previously thought. In the case of throwing, there's a reasonable case that you really should do some before you finish throwing. How much is another thing. My research is in part looking at humeral torsion in throwers (how twisted the bone in your upper arm is), in particular its measurement (we’ve developed an ultrasound based measure that shows better inter-rater reliability than CT) and humeral torsion genesis. Long story short: we’re all born with a marked humeral retrotorsion such that it appears we have a large amount of glenohumeral external rotation and a similar reduction in internal rotation. During the next 16 years, particularly the first 8 it ‘de-rotates’ such that you end up with the picture of an adult. The reverse happens in the femur, and it’s why small children are happy to sleep with their arms above their heads, and can kneel with their feet out to the side seemingly in an impossibly large amount of hip internal rotation. Our results seem to indicate that throwing during these years prior to skeletal maturity helps slow the progress of this humeral de-rotation maintaining the ability to display large ranges of external rotation (while losing some of their internal rotation range). Although I can’t say for sure yet if this is simply self-selection. In this case, it seems that throwing prior to skeletal maturity may actually be protective of shoulder injuries, and performance enhancing in the long term. Much of the literature regarding sporting participation pre-skeletal maturity makes blanket motherhood statements along the lines of reducing participation in any single event and this is a case where this may not hold true, although the parameters (in terms of intensity, duration, and frequency of throwing are still shady). My advice would be: sure, let him throw, but get good coaching so he does it with correct technique, and be sensible in regards tolerating pain (i.e. don't put up with any). Just my 2 cents' worth.
(7) The shot shall be of solid iron, brass or any metal not softer than brass, or a shell of such metal filled with lead or some other material.
(8) The shot shall be spherical in shape, its surface shall have no roughness and the finish shall be smooth. It shall conform to the following specifications:
MEN SENIOR JUNIORS Minimum Maximum Minimum Maximum Weight 7.26kg 6kg Diameter 110mm 130mm 105mm 125mm
UNDER 17 Weight 5kg Diameter 100mm 120mm
UNDER 13 UNDER 15 Weight 3.25kg 4kg Diameter 90mm 105mm 95mm 110mm
WOMEN SENIORS AND JUNIORS UNDER 17 Minimum Maximum Minimum Maximum Weight 4kg 4kg Diameter 95mm 110mm 95mm 110mm
UNDER 15 UNDER 13 Weight 3.25kg 2.72kg Diameter 90mm 105mm 85mm 95mm
MASTERS MEN 40-49 MEN 50-59 Minimum Maximum Minimum Maximum Weight 7.26kg 6kg Diameter 110mm 130mm 105mm 125mm
MEN 60-69 MEN 70 AND OVER Weight 5kg 4kg Diameter 100mm 120mm 95mm 110mm
WOMEN 35-49 WOMEN 50 AND OVER Weight 4kg 3kg Diameter 95mm 110mm 85mm 110mm
NOTE: Weight indicated is the minimum for admission to the competition and for acceptance of records.
Manufacturers are recommended to supply equipment for competition which exceeds the specified weights by at least 5gr.
In these Rules 'smooth' implies a normal cast or turned surface which may or may not have been coated with a fine powder, sand blasted, sprayed or painted-such surfaces are 'orthodox'. Any surface which has been roughened by ribbing, grooving, knurling etc., is not 'smooth'. No unorthodox surface is permitted.
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