In Athletes, Kids, Radio, Sports Applications

November 10, 2008

Audio Article

This is the eighth episode of CrossFit Radio, which aired at 8am PST on November 9th, 2008.

0:00 Intro and Jason "Rhabdo" Kaplan - The 1:53 Fran
22:30 CrossFit Journal Challenge
24:00 Success Story: Steve Liberati from Steve's Club
38:20 John Brown of CrossFit Agoge and the Hopper Deck
48:00 Comments of the Week
53:00 Cyndi Rodi from CrossFit Kids

1hr 14min 16sec

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3 Comments on “CrossFit Radio Episode 8 081109”

1

wrote …

re: Cyndi Rodi from CrossFit Kids
cool stuff! I'm reading "Spark" by John J. Ratey, really dumbed down but eye-opening nonetheless wrt physical activity - mental health and functioning

interestingly enough, exercise not only helps children with brain development, but also the cognition in the adult and geriatric population. the brain is able to produce new neurons and connections even to old age apparently, debunking the myth that after childhood the brain has no more brain cell growth.

apparently your mind is more tuned to learn directly after exercise. i say do the crossfit WOD, recover for 15-30 minutes - then read for an hour!

learning + physical activity going hand-in-hand makes a lot of sense - prior to developed civilization learning was learning how to survive by hunting/gathering, not getting killed reminds me of http://www.againfaster.com/articles/you-need-me.html

most of the studies are done with aerobic exercise - i wonder how doing doing crossfit would do with regards to brain development

2

wrote …

Love the research on brain function. Regarding jumping though. Cannot find studies at time of this writing but what about studies that suggest that its not always short kids who get into gymnastics rather correlation that the pounding can stunt growth. Granted with gymnastics only the kids do much more volume of jumping therefore pounding growth plates. And i am a phyisical therapist and totally agree controlled loading is good. And would say that the kids who are competitive probably spending hours pounding themselves.

So, not trying to be naysayer, in fact get turned off with all the negative testosterone bashers (ex, recent hammering of Rhabdo). Just want to hear educated rebuttle to this topic of plyometrics in kids. Thanks

3

wrote …

Leo,
Check out these studies re: the benefits of jumping for kids in relation to bone density.
http://oregonstate.edu/dept/ncs/newsarch/1998/Sep98/kidbone.htm
http://bjsm.bmj.com/cgi/content/abstract/39/8/521

With regard to gymnastics,I am no expert. However, I have read studies which indicate that participation in elite gymnastics increases bone density and joint health but may temporarily slow bone growth. Data indicates that bone growth catches up (at least partially) once the the intense levels of training are discontinued. This is a correlation rather than a causal relationship. Researchers are unsure if the impact of training, malnutrition caused by starvation in order to maintain a thin frame, or some other factor(s) are to blame. The literature does indicate that gymnasts are, indeed, often genetically destined for shorter stature based on their parents' growth patterns and adult heights. Check out this study in the "Clinical Journal of Sport Medicine." It addresses this topic and has an extensive reference list that you can use to further investigate the topic.

http://latinut.net/documentos/deporte/metabolismo/Gimnasia%20y%20crecimiento%20Caine%20D%20CJSM.doc

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