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This ties in well with my VO2max testing idea----the main use of the VO2 max tests have been as a measure of cardiovascular fitness, used typically by sports physiologists, in determining potential of an athlete in various endurance based sports. For several decades, the Eastern block countries would have child athletes muscle biopsied ( to determine percentages of slow and fast twitch fibers in primary muscle groups) and VO2 max tested, and then pushed into the sport that most closely matched their genetic potential. In the experiment with pigs below, the two populations of pigs, if VO2max tested, would show the VO2max values to be directly related to incidence of DCS. Dan Volker >I think the following is what you are referring to. This is the summary of >the article. I OCR'd it so the spacing is off, but the text is accurate. >Please be careful in reading the last line. It does NOT say that DCS is >independent of being fat, it says that conditioning helps the fat pigs too. >(so to speak). >It also suggests that being immature, male, and castrated helps promote >DCS!!!! > >Art > > >Undersea & Hyperbaric Medicine, Vol. 22, No. 1, 1995 > Exercise conditioning reduces the risk of neurologic > decompression illness in swine > > J. R. BROOME, A. J. DUTKA, and G. A. MCNAMEE > Naval Medical Research Institute, 8901 Wisconsin Avenue, Bethesda, >Maryland 20889-5607; and National > Naval Medical Center, 8901 Wisconsin Avenue, Bethesda, Maryland 20889-5088 > Broome JR, Dutka AJ, McNamee GA. Exercise conditioning reduces the risk >of neurologic > decompression illness in swine. Undersea Hyperbaric Med 1995; 22(1):73-85. > > During development of a pig model of neurologic decompression illness >(DCI) we noted that tread-mill-trained pigs seemed less likely to develop >DCI than sedentary pigs. The phenomenon was formally investigated. >Twenty-four immature, male, castrated, pure-bred Yorkshire swine > were conditioned by treadmill running, while 34 control pigs remained >sedentary. All pigs > (weight 18.75-21.90 kg) were dived on air to 200 feet of seawater (fsw) >in a dry chamber. > Bottom time was 24 min. Decompression rate was 60 fsw/min. Pigs that >developed neurologic > DCI were treated by recompression. Pigs without neurologic signs were >considered neurologi- > cally normal if they ran on the treadmill without gait disturbance at 1 >and 24 h postdive. Of the 24 exercise-conditioned pigs, only 10 (41.7%) >developed neurologic DCI, compared to > 25 of 34 (73.5%) sedentary pigs ~2 = 5 97; P = CO.015). Neither mean >carcass density > (adiposity) nor mean age were significantly different between groups. No >patent foremen ovali was detected at necropsy. An additional control >group of 24 pigs was dived to clarify the influence of weight. The >results suggest that the risk of neurologic DCI is reduced by >physical conditioning, and the effect is independent of differences in age, >adiposity, and weight. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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