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Research in Australia has come up with conclusions that confirm the
Evolutionary Fitness premise, yet the researchers are not bright enough to
make the obvious jump.

It concerns osteoporosis – in both men and women (one in four Australian
men will have osteoporotic fractures at some time).  They are saying that
exercise can give bone strength, provided the exercise is:

#  dynamic

#  high magnitude (in relation to body weight)

#  high strain (that is, involves quick movements)

#  applies unusual loading patterns - avoid a set exercise routine

#  low reps is OK if above conditions met.  Meeting the above conditions
also increases the likelihood of avoiding injury

They make the following points as well:

#  good exercise includes: sprinting, slalom running, hurdling, jumping,
skipping, jumping off heights

#  jogging is bad for bone strength

#  exercise before puberty is up to four times as effective as post
puberty exercise.  Pre-puberty exercise increases bone size and lasts for
life; post puberty exercise increases bone density, but the density
reduces once the exercise stops.

The item on osteoporosis is followed by another looking at why older
people are reluctant to exercise.  This is mainly about our culture,
perception, the attitudes of others and our susceptibility to those
attitudes

The full transcript can be found at:

http://www.abc.net.au/rn/talks/8.30/helthrpt/stories/s1225732.htm

Keith

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