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JKM > Volume 35(1); 2014 > Article
Doo, Lee, Lee, Kim, Cho, Park, Ko, Bae, and Park: A Comparison Study of Postural Control Measures Between Before and After Applying Temporomandibular Joint Balance Appliance-Golf (TBA-G) Using Balance Master System

Abstract

Objectives

The purpose of this study was to examine whether Temporomandibular Joint Balance Appliance-Golf (TBA-G) can improve postural control ability of healthy adults.

Methods:

Twenty participants (10 male, 10 female) aged 20 to 39 years were involved. Postural control ability of all participants was assessed before and after applying TBA-G with Balance Master® system. Modified clinical test sensory interaction on balance (mCTSIB), unilateral stance, weight bearing and rhythmic weight shift were used to evaluate postural control ability.

Results:

After applying TBA-G, mCTSIB on a firm plate with eyes open increased from 0.2 to 0.23 (p<0.05) but directional control was improved in slow and moderate velocity of front/back rhythmic weight shift test (P<0.05). In two cases with postural imbalance, most of the postural control measures improved after applying TBA-G.

Conclusions:

The results suggest that TBA-G could improve balance control ability. A larger controlled trial is needed to determine more accurately the effect of TBA-G on balance control ability.

Fig. 1
Temporomandibular joint Balance Appliance for Golf (TBA-G)
jkm-35-1-50-5f1.tif
Table 1
General characteristics of Subjects.
male (n=10) female (n=10)
Age (yrs) 26.6±2.22 26.5±1.72
Height (cm) 173±3.68 161±3.97
Weight (kg) 66.62±8.22 51.35±4.81
Table 2
Comparison of Mean Center of Gravity(COG) Sway Velocity between before and after applying Temporomandibular Joint Balance Appliance-Golf(TBA-G).
Mean COG Sway Velocity(°/sec)
Before(n=20) After(n=20) P-value
mCTSIB-firm Eye open 0.2(0.17, 0.22) 0.23(0.2, 0.26) 0.03*
Eye closed 0.25(0.2, 0.36) 0.27(0.21, 0.3) 0.59
mCTSIB-form Eye open 0.57(0.5, 0.67) 0.5(0.5, 0.62) 0.1
Eye closed 1.4(1.17, 1.52) 1.25(1.14, 1.42) 0.06
Unilateral stance-eye open Right side 0.73(0.64, 0.82) 0.73(0.67, 0.82) 0.17
Left side 0.7(0.67, 0.8) 0.7(0.64, 0.79) 0.76
Unilateral stance-eye closed Right side 1.48(1.33, 1.83) 1.52(1.25, 1.77) 0.1
Left side 1.63(1.22, 1.92) 1.48(1.24, 1.69) 0.28

Values are median(lower quartile, upper quartile).

* p<0.05 in Wilcoxon Signed Rank Test versus baseline.

† Lower points indicate better balance control.

mCTSIB: modified clinical test sensory interaction on balance.

Table 3
Comparison of Weight bearing rate before and after applying Temporomandibular Joint Balance Appliance-Golf(TBA-G).
Before(n=20) After(n=20) P-value
0° 0.92(0.86, 0.96) 0.9(0.86, 0.96) 0.94
30° 0.92(0.85, 0.96) 0.92(0.89, 0.95) 0.83
60° 0.9(0.83, 0.95) 0.85(0.82, 0.95) 0.21
90° 0.9(0.82, 0.96) 0.9(0.82, 0.96) 0.71

Values are median(lower quartile, upper quartile).

† Ratio of weight bearing rate: closer to 1 indicates better balance.

Table 4
Comparison of Directional control and On-axis velocity during the Rhythmic Weight Shift before and after applying Temporomandibular Joint Balance Appliance-Golf(TBA-G).
Before(n=20) After(n=20) P-value
Front/Back slow Directional control(%) 80(75, 85) 83.5(79.25, 85.75) 0.03*
On-axis velocity(°/sec) 2.15(1.9, 2.38) 2(1.9, 2.1) 0.05
moderate Directional control(%) 83(78.25, 86.75) 85.5(82, 88) 0.03*
On-axis velocity(°/sec) 3.1(2.9, 3.4) 3.1(3, 3.28) 0.86
fast Directional control(%) 85(78.25, 90) 85.5(72.5, 90) 0.2
On-axis velocity(°/sec) 5.85(5.45, 6.93) 6.25(4.93, 6.6) 0.42
Left/Right slow Directional control(%) 81(77.25, 84) 81.5(80.25, 83.75) 0.26
On-axis velocity(°/sec) 3.1(3, 3.45) 2.9(2.8, 3.18) 0.12
moderate Directional control(%) 85.5(83.25, 88) 87(84, 90) 0.36
On-axis velocity(°/sec) 5(4.63, 5.28) 4.65(4.43, 5) 0.05
fast Directional control(%) 92(89.25, 93) 90(87.25, 93) 0.3
On-axis velocity(°/sec) 9.95(8.7, 11.05) 10.05(9.6, 10.6) 0.43

Values are median(lower quartile, upper quartile).

* p<0.05 in Wilcoxon Signed Rank Test versus baseline.

† Higher points indicate better balance control.

Table 5
Comparison of Balance parameter before and after applying Temporomandibular Joint Balance Appliance-Golf (TBA-G) in two cases.
Case 1 Case 2
Before After Before After
mCTSIB 0.6 0.5 0.7 0.6
Mean COG Sway Velocity(°/sec)
Unilateral stance-eye open 9 0 13 6
Left/Right difference(%)
Unilateral stance-eye closed 7 0 2 8
Left/Right difference(%)
Weight bearing 0.89 1 0.85 0.96
30° 0.72 0.92 0.82 1
60° 0.85 0.85 0.85 0.96
90° 0.82 0.85 0.85 1
RWS - Left/Right On-axis velocity(°/sec)§ 5.93 6.2 6.47 5.63
Directional control(%)§ 88.33 89.67 84 86.67
RWS - Front/Back On-axis velocity(°/sec)§ 3.37 4 3.67 3.4
Directional control(%)§ 68 81.33 62.67 75.33

† Lower points indicate better balance control.

‡ Ratio of weight bearing rate: closer to 1 indicates better balance.

§ Higher points indicate better balance control.

mCTSIB: modified clinical test sensory interaction on balance; Mean COG Sway Velocity: Mean Center of Gravity Sway Velocity; RWS: rhythmic weight shift.

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