I copied an article on freezing that I wrote for the Parkinson
Foundation of Harris County Newsletter.  Maybe it will have some hints
that could be helpful.

        I'M FREEZING…AND IT'S NOT EVEN COLD!
                        Nina Brown

To the uninitiated, freezing might refer to the temperature, but if you
have Parkinson's, "freezing," a temporary, involuntary inability to
move, is a symptom where your feet feel as if they are stuck to the
ground.  It is sometimes referred to as "start hesitation" or "gait
initiation failure" and can occur when you begin walking, while walking,
when turning, in doorways and upon entering a confined space.  This
condition can last anywhere from a few seconds to many minutes.
"Freezing" is a difficult symptom to treat but your neurologist may be
able to alter your medications (possibly add a dopaminergic agonist such
as Permax, Parlodel, Mirapex or Requip) and/or adjust your medication
scheduling to help control this problem.

Walking in general is more problematic for a person with Parkinson's
because of the slowness, the diminished arm swing and the shuffle that
comes from not raising your feet or toes high enough off the floor.  The
stooped posture affects your balance as your center of gravity shifts
forward with the upper part of your body preceding the lower part as you
walk.  In order to catch up with your center of gravity and regain
balance, the tendency to take increasingly faster, shorter and more
frequent steps, known as "festination" occurs.  "Propulsion" occurs when
you try to run forward to catch up to avoid falling.  "Retropulsion"
takes place when you feel pulled or forced to run backwards to recover
your balance.  As you might imagine, falling becomes the biggest concern
when your body continues moving and your feet stop.

Older bones tend to break easier, so it's important to keep them strong
with weight bearing exercises and the proper diet. Stretching and range
of motion exercises can also help combat muscular rigidity and keep your
joints from becoming immobile.

Falls are not only dangerous to your physical health but your mental
health as well.  Fearful of falling again, many people stay close to
home, abandoning exercise routines and social pursuits, but withdrawal
from activities is the worst way to prevent another fall.  (And anxiety
also increases the tendency to freeze.)  A fall to the floor doesn't
need to be a fall into isolation or depression.  If you've been hurt
from a fall, it's important to get out even if you need to use a cane or
a walker.  Just pay careful attention to the threat of "freezing" or
being off balance and don't make any reckless movements.

 You need to think about every step you take.  Walking is no longer an
automatic function.  Actions that were once routine become a challenge
because your muscles aren't getting instructions from your brain to move
and therefore don't respond to your need to move.  It can be very
frustrating when familiar tasks must be constantly relearned and given
such disproportionate amounts of concentration; but attitude and
exercise are vital to your well-being, so approach this challenge with
spirit and determination and fight to keep as much mobility as you
possibly can.  Don't become discouraged.  Some days it's just easier to
move than other days.  Resolve to maintain a "can do" regarding attitude
and a "will do" regarding exercise.  If you do fall down, at least it
proves you were on your feet and moving.

  * * * *
                EXERCISES FOR MARCH, 1998

Abracadabra…or a few tricks for better balance and some techniques to
overcome freezing when your head won't tell your feet to take that first
step.

 For better balance:  practice the ancient martial art of Tai Chi
(pronounced tie-chee).  Tai chi consists of more than 100 flowing,
dance-like movements of "postures" or "forms" that resemble ballet in
slow motion, performed while you concentrate single-mindedly on your
movements and your breathing.  The concentration required has been
likened to "meditation with motion."  Taken together, the forms are
designed to work all of your limbs and muscles.  Since it's a no-impact
form of exercise, it's much better for bones and joints that can't
withstand the jarring from high-impact activities.  The continuous,
smooth, gentle movements have been said to strengthen the motor skills
impacted by PD.  It is also particularly helpful in decreasing tremor
because Tai Chi reduces stress and the muscles relax.

Dr. Timothy C. Hain, a neurologist and associate professor at
Northwestern University Medical School, conducted a study examining the
potential benefits of tai chi on some patients with Parkinson's.  His
results were overwhelmingly positive.  Hain said, "We think it is
possible that tai chi can not only restore balance but eventually make
it better than normal." In addition to preventing falls, other benefits
included increased strength (especially in the thighs, buttocks and
calves) and flexibility (working a full range of motion without
straining the joints or connective tissues) as well as better posture.
PFHC offers free Tai Chi classes taught by Tony Medina at the Tracy Gee
Community Center on Monday's from 1:00-2:00 p.m. and Wednesday's from
11:00-12:00 a.m.  Try it, you'll like it!

More suggestions for better balance:
1. Stand with your hands on your hips, feet spread apart:
a) Practice marching in place
b) Practice raising your leg straight out behind you.
c) Practice raising your leg out to the side.
d) Practice drawing a circle with your leg.
2. Stand with your hands at your side, feet spread apart:
e) Lean forward and backwards.
f) Lean to both sides.
a) Lean in a circular motion and reverse the motion.
To help alleviate freezing:
Ø Start by maintaining an upright, tall stance, moving your body's
center of gravity backward so it runs straight up and down through the
spine, legs and ankles.
Ø Use your imagination.  Dr. Dwight C. McGoon, a Mayo Clinic surgeon,
pretends he has a rocking chair leg attached to each of his legs, and
that a proper step requires that the back end of the rocker touch the
floor on the forward step and the front end of the rocker touch the
floor before the step is completed.
Ø Exaggerate your step.  Imagine a point on the floor about two feet
ahead.  Make that first step as long a stride as possible because
subsequent steps tend to shorten.
Ø Rock from side to side to initiate a marching in place step.
Ø March like a soldier with a stiff-legged, long-striding military gait.
Ø Swing your arms up above your head, then bring them down sharply to
your side 2 or 3 times.
Ø Walk sideways
Ø Take a quick step backwards.
Ø Watch other people walk.
Ø If you hesitate walking through doors, focus on an object past the
doorframe.
Ø Step over an imaginary object on the ground, or use a cane or another
person's foot, tile or carpet patterns. Make a path at night with white
socks on carpet or white tape on a hard floor.
Ø Alternate the distribution of your body weight.
Ø Have someone rhythmically pull or push or raise your knee.
Ø Stamp your feet
Ø A sudden sound such as a clap may break a freeze.
Ø Walk to music to increase speed of motion and improve rhythm.
Ø Make wider turns to decrease the chance of getting your feet entangled
and falling.
Ø It helps to count each step.  You're less likely to freeze if you know
how many steps it takes to get from the bedroom to the bathroom.
Ø Avoid clutter.  Keep floor areas free of shoes and other objects to
reduce the risk of a fall.
Ø If you need a walker for balance, using one with wheels (with
automatic locking mechanisms) will allow for a more normal walking
pattern than standard ones.  [Hint: if tremors make the walker unsteady,
try weighting the lower bars by tying on socks filled with pennies.]