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Validity of the single limb heel raise test to predict lower extremity disablement in patients with sporadic inclusion body myositis.
[inclusion body myositis]
Abstract
Purpose
:
To
determine
the
validity
of
the
single
limb
heel
raise
(
SLHR
)
test
as
a
potential
screening
tool
to
detect
lower
extremity
disability
in
patients
with
sporadic
inclusion
body
myositis
(
sIBM
)
.
Methods
:
We
compared
gait
speed
and
fall
history
between
subjects
with
sIBM
who
either
could
complete
one
SLHR
(
SLHR
group
)
or
could
not
complete
one
SLHR
.
Discriminative
validity
was
established
by
comparing
between
group
differences
in
functional
measures
based
on
group
assignment
.
Receiver
operating
characteristics
curve
analysis
was
used
to
determine
the
predictive
validity
of
completing
one
repetition
on
the
SLHR
test
.
Spearman
correlations
were
used
to
determine
the
association
between
gait
kinematics
and
number
of
repetitions
achieved
on
the
SLHR
test
.
Results
:
Forty
-
three
subjects
(
13
females
)
were
studied
.
The
SLHR
group
(
n
 
=
 
21
)
showed
significantly
greater
gait
speed
(
p
 
<
 
0
.
001
)
and
decreased
gait
aid
use
(
p
 
<
 
0
.
05
)
compared
to
the
no
SLHR
group
(
n
 
=
 
22
)
.
SLHR
cut
scores
of
1
,
20
,
and
22
repetitions
maximized
positive
likelihood
ratios
(
+
LR
)
for
the
ability
to
walk
at
54
.
9
(
+
LR
.
2
.
2
)
,
63
.
2
(
+
LR
.
9
.
5
)
,
and
73
.
1
 
m
/
min
(
+
LR
.
5
.
0
)
,
respectively
.
Conclusion
:
The
SLHR
test
demonstrates
adequate
discriminative
and
predictive
validity
as
a
screening
tool
for
lower
extremity
disablement
in
patients
with
sIBM
.
Implications
for
Rehabilitation
The
SLHR
test
has
adequate
reliability
and
validity
to
screen
for
the
presence
of
lower
extremity
disablement
in
patients
with
sIBM
.
Results
of
this
rapid
field
test
may
be
used
to
guide
the
need
for
rehabilitation
services
to
mitigate
the
effects
of
slow
gait
speeds
in
patients
with
sIBM
.
Diseases
Validation
Diseases presenting
"fall history between subjects with sibm who either could complete one slhr"
symptom
inclusion body myositis
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