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- Title
Effect of Semi-Rigid and Soft Ankle Braces on Static and Dynamic Postural Stability in Young Male Adults.
- Authors
Noriaki Maeda; Yukio Urabe; Shogo Tsutsumi; Shuhei Numano; Miho Morita; Takuya Takeuchi; Shou Iwata; Toshiki Kobayashi
- Abstract
Ankle braces have been suggested to protect ankle joints from a sprain by restricting inversion and improving proprioception. However, the difference in effects between a semi-rigid brace and a soft brace regarding dynamic postural control after landing is not known. The aim of the present study was to compare the effect of soft (SB) and semi-rigid (SRB) ankle braces on static and dynamic postural stability in healthy young men. Altogether, 21 male adults (mean age 24.0 ± 1.5 years) were assessed for one leg while wearing non-brace (NB), SB or SRB. Balance in single-limb stance on a single-force platform with open eyes and closed eyes were assessed for the non-dominant leg under SB, SRB, and NB conditions. Locus length/second (mm/s) and the enveloped area (mm⋅s-2) surrounded by the circumference of the wave pattern during postural sway were calculated. For assessing dynamic postural stability, the participant jumped and landed on one leg on a force platform, and the Dynamic Postural Stability Index (DPSI) and the maximum vertical ground reaction force (vGRFmax) were measured. The data were compared among the three conditions with repeated-measures analysis of variance. The correlations between locus length/second, enveloped area, DPSI values (DPSI, Anterior-Posterior Stability Index, Medial-Lateral Stability Index, and Vertical Stability Index), and vGRFmax were then calculated. The results indicated that locus length/second and enveloped area with open eyes and closed eyes were not significantly different for each condition. However, a significant lower in the DPSI and Vertical Stability Index were observed with the SRB in comparison to the SB and NB. A significant improvement in vGRFmax was also observed with the SRB in comparison to NB. SRB demonstrated a positive effect on dynamic postural stability after landing on a single leg and may improve balance by increasing dynamic postural stability.
- Subjects
JAPAN; ANKLE physiology; ANALYSIS of variance; ANTHROPOMETRY; CEREBRAL dominance; CLINICAL trials; CROSSOVER trials; DIAGNOSIS; POSTURAL balance; EXERCISE physiology; GROUND reaction forces (Biomechanics); JUMPING; MATHEMATICS; POSTURE; STATISTICAL sampling; STATISTICS; DATA analysis; EFFECT sizes (Statistics); RANDOMIZED controlled trials; REPEATED measures design; DATA analysis software; ORTHOPEDIC apparatus -- Design &; construction; DESCRIPTIVE statistics; INTRACLASS correlation
- Publication
Journal of Sports Science & Medicine, 2016, Vol 15, Issue 2, p352
- ISSN
1303-2968
- Publication type
Article