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문제 정의
- This study was to investigate the balance ability through the change of foot pressure, limit of stability and velocity sway in stroke patients after providing the input of somatosensory information using TENS.
제안 방법
- This was a single-blind, randomized, placebo-controlled, clinical trial. General characteristics of subjects were investigated and physiotherapists who were blinded from the assessment recorded all the demographic data into a computer program designed for stratified randomization. The stratification performed before randomization was based on gender (male and female), side of hemiplegia (left and right).
- , 2011). In this study, TENS was applied to SOL, TA, TFL and VAS in line with previous study. It is believed that the increase of LOS was resulted from the improved capacity of movement of COP by facilitating the coordination between lower extremities and upper extremities with TENS.
- Interventions were given to subjects 5 days a week for four weeks. TENS group were treated with TENS (DMC, Bio Tron DX, Korea) for 60 minutes in addition to the conventional therapy which included 30-minute exercise and rehabilitation ergometer training for 15 minutes.
- Limit of stability is to analyze the maximal limit of maintaining the stability during spontaneous movement in standing position. Subjects were instructed to move their weight toward 8 directions which are left, right, forward, backward, left-forward, left-backward, right-forward and right-backward until maximal range without loss of balance. The distance of movement was analyzed, after separating affected side and non-affected side.
- Interventions were given to subjects 5 days a week for four weeks. TENS group were treated with TENS (DMC, Bio Tron DX, Korea) for 60 minutes in addition to the conventional therapy which included 30-minute exercise and rehabilitation ergometer training for 15 minutes. Control group performed only conventional therapy.
- The distance of movement was analyzed, after separating affected side and non-affected side. The measurements were conducted three times and then the mean value was calculated for statistical analysis. In order to minimize muscle fatigue, 3-minute break was given between measurements.
- , 2006). Thus, this study is to investigate the effectiveness of TENS on balance in stroke patients by analyzing some components such as foot pressure, limit of stability and velocity sway after providing somatosensroy input using TENS.
- In addition, independet t-test was also used to analyze other characteristics such as age, onset period, height and weight. To investigate the effects of TENS on balance of subjects, Paried t-test was used and Independent t-test was also used again to compare the changes of balance ability between groups. The significant level was 0.
대상 데이터
- The participants of this study were total of 25 stroke patients, 12 people in the control group and 13 in the TENS group, and the gender in the control group were 7 males and 5 females, and 8 males and 5 females in the TENS group, and the average age was 53.42±9.41 for the control group and 56.46±10.68 for the TENS group (Table 1).
- This study was to investigate the effect of TENS for somatosensroy input on balance ability in 25 stroke patients. Balance components such as foot pressure, limit of stability and velocity sway were measured for analyzing the balance ability of subjects.
- The stratification performed before randomization was based on gender (male and female), side of hemiplegia (left and right). Twenty five subjects participated and were randomly divided into two groups, Control group (n=12) and TENS group (n=13) by the computer program.
데이터처리
- To confirm the homogeneity of subjects, general characteristics such as gender, paretic side and onset type were analyzed using Chi-Square test. In addition, independet t-test was also used to analyze other characteristics such as age, onset period, height and weight.
성능/효과
- Balance components such as foot pressure, limit of stability and velocity sway were measured for analyzing the balance ability of subjects. In the results, TENS addition to conventional therapy was more effective on the increase of foot pressure and limit of stability and the decrease of velocity sway in eye-closed condition. This suggests that the application of TENS is effective to improve the somatosensory input of affected side and to increase the motor function and balance ability.
- In this study, foot pressure in affected side was increased from 40.19±4.53% to 44.88±3.71% in TENS group which was higher than control group.
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