Lisa:

 Hoffman published his technique in 1953. It was the culmination of his
experience over a two year time period.

  In 1942 - Thorek questioned the usefulness of this proceedure.  ( 15 years
prior to Hoffman publishing on thise subject!)

  In 1987 Jo Alexander did the first "actual" study with 96 women . While
admitting to the small number of participants in her study she "dailed to
identify any benift of the policy of recommending Hoffman's exercise"

   While this does not "directly" answer your question -I let mother's know
that this has been used - if they believe that it would be advantageous for
them they most certianly shoud use it.

    I have the same philosophy about "shells"

        Patricia

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