Research Report Abstracts - Gesundheit

eS856
completion of the cyclic testing. Furthermore, stiffness was
calculated at the 1st and 600th cycles and one hour post test.
Analysis: One-way repeated measures analysis of variance
(ANOVA) was used to determine statistical differences of the
displacement values at 5 N from the 1st to 600th cycle and one
hour after the cyclic tests for each group. Dunnett multiple
comparison was used as a post hoc to compare the displacement
values at 5 N of the 1st cycle with the subsequent
cycles. In addition, one-way repeated measures ANOVA were
applied to determine any change in the stiffness between the
1st, 600th cycle and one hour post cyclic testing. Bonferroni
multiple comparison was used as a post hoc. The alpha level
was set at 0.05.
Results: When compared with the 1st cycle, the displacements
were significantly greater from the 100th to 600th cycle
in all groups. Significant increases in the displacements and
stiffness were observed between the 1st cycle and one hour
post cyclic tests in the 20 N and 40 N groups.
Conclusions: The cyclic loading in the toe region resulted in
immediate elongation of the posterior capsule, but its effect
was temporary. The cyclic loading in the transition region
and beginning of the linear region caused not only immediate
but also continuous elongation of the capsule. Although the
continuous elongation was larger with increasing the load,
stiffness of the capsule did not decrease even after 600 cycles
of repetitive loading of the highest loading test.
Implications: The beginning of the linear region corresponds
with the final resistance where the therapists sense a “stop”
at the end range during joint mobilization. Our findings suggested
that the posterior capsule could be elongated without
serious damage of main supportive fibers even though oscillatory
joint mobilization up to final resistance was performed
repetitively.
Keywords: Shoulder; Joint mobilization; Posterior capsule
Funding acknowledgements: None.
Ethics approval: The study protocol was reviewed and
approved by our institutional Biospecimens Committee.
Research Report Poster Display
Number: RR-PO-310-15-Tue Tuesday 21 June 13:00
RAI: Exhibit Halls 2&3
RELATIONSHIP BETWEEN BODY SWAY DURING
EYES-OPENED ONE-LEG STANDING AND
PHYSICAL FUNCTION AMONG
COMMUNITY-DWELLING ELDERLY FEMALES
Murata S. 1,2 , Horie J. 1 , Miyazaki J. 2
1Nishikyushu University, Faculty of Rehabilitation Sciences,
Saga, Japan, 2Mejiro University, Department of Health Sciences,
Saitama, Japan
Purpose: One-leg standing ability and its related factors have
been studied in elderly subjects. In past studies on muscular
strength in the upper and lower limbs, only part of the mus-
cles was examined. To examine factors involved in one-leg
standing, it is necessary to measure and evaluate total body
function. In this study, we measured the muscular strength
of the lower limbs, foot grip, and plantar sensibility, which
were considered to affect one-leg standing, and evaluated the
relationship between these parameters and body sway during
eyes-opened one-leg standing.
Relevance: Effective physiotherapy for the enhancement of
one-leg standing ability is evaluated by comprehensive examination.
Participants: The subjects were 56 community-dwelling
elderly females (average age 69.8 ± 6.3 years). Eyes-opened
one-leg standing over more than 30 seconds was possible in
all subjects.
Methods: Body sway on one-leg standing was measured
for 30 seconds using a stabilometer. The isometric contraction
was measured as the muscular strength of the lower
limbs using Hand-held dynamometer, and the foot grip was
measured using a foot grip meter. With regard to plantar sensibility,
the 2-point discrimination sensibility in the heel and
thenar regions was measured using a Vernier calliper, and the
mean was analyzed. These measurements were performed in
the dominant leg.
Analysis: The relationships between body sway (total trajectory
length and circumferential area) and other body
measurement values were examined using Pearson’s correlation
coefficient. Multiple regression analysis (stepwise
method) was performed using body sway on one-leg standing
as the objective variable, and factors affecting body sway
were extracted.
Results: Body sway on one-leg standing was significantly
correlated with the 2-point discrimination sensibility (0.67),
foot grip (−0.53), femoral quadriceps muscle strength
(−0.43), and middle gluteal muscle strength (−0.42). Factors
involved in body sway in the one-leg standing position
extracted by stepwise regression analysis were the foot grip
(0.49) and 2-point discrimination sensibility (0.43).
Conclusions: These results suggested that foot functions,
such as foot grip and 2-point discrimination sensibility,
affected body sway in the one-leg standing position rather
than the strength of major muscles in the lower limbs, such
as femoral quadriceps muscles. To enhance one-leg standing
ability in subjects who can stand on one foot for more than
30 seconds, it was suggested that improvement of plantar sensibility
and foot grip is more important than strengthening the
major muscles of the lower limbs.
Implications: These results suggest the effectiveness of foot
grip strength exercise in preventing falls in the elderly people.
Keywords: Body sway during eyes-opened one-leg standing;
Community-dwelling elderly females; Foot grip strength
Funding acknowledgements: None.
Ethics approval: This study was conducted with the
approval of the Research Ethics Committee at Nishikyushu
University.