Invitation to Participate in Judo Survey

24 October 2005
To: Judo Clubs all Across the Country
From: David Matsumoto
Re: Looking for volunteers for a study on judo

All of us for years have been touting the positive benefits to participants
of judo. Now, the USJF Development Committee and Technical Research Subcommittee
is conducting a study to test the efficacy of judo. It is extremely important
for us to conduct this study and document the positive effects of judo so that
such evidence can be used to help create more dojos in the country and spread

We are soliciting dojos who would like to cooperate by participating in this
study. If you cooperate, all you would have to do is introduce the study to
your students and encourage them to participate. Their participation should
be entirely voluntary and should not have an impact on any benefits or consequences
they might accrue from the USJF or your dojo.

If they do participate, they will be asked to complete a battery of brief questionnaires
about themselves, and to tell us about their judo experiences. We will ask for
their email address so that we can send them a request in a few months’
time to do the questionnaires again, and thereafter every three months.

We are especially interested in getting new students who join your
dojo for the first time to participate.

The study is designed for adolescents and adults ages 12 and up who can complete
the surveys. Those under 18 should consult with their parents and obtain their
approval before participating.

We will have a website where all participation can occur via internet. For
those who prefer, we will mail out hardcopies of the questionnaires in a packet.

At this time we are just soliciting dojos who would like to participate. If
at all possible we would like a wide cross-section of the dojos in the country.
Won’t you consider being part of our study? If you’re at all interested
in participating, please send me the following information via email to

Your name:
Dojo name:
Mailing address:
Email address:

On behalf of the USJF Development Committee and Technical Research Subcommittee,
thanks in advance for your help and cooperation on this important project for


David Matsumoto, Ph.D.