• Title, Summary, Keyword: Balance

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Effects of Dual Task Training on Balance and Functional Performance in High School Soccer Players with Functional Ankle Instability

  • Kwak, Kwang-Il;Choi, Bum-Jin
    • The Journal of Korean Physical Therapy
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    • v.28 no.4
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    • pp.254-258
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    • 2016
  • Purpose: This study was conducted to identify the effects of dual task training on balance and functional performance in high school soccer players with functional ankle instability. Methods: Twenty high school soccer players with functional ankle instability were randomly assigned to a single task training group and a dual task training group. One participant who did not participate regularly in the training was excluded. The single task training group (n=9) received balance training on an unstable surface. The dual task training group (n=10) received balance training on an unstable surface and had to catch thrown balls during the balance training. Both groups were trained for 4 weeks, 3 days a week. The balance and functional performance of both groups was measured before and after training. Balance was measured using an anterior-posterior and medio-lateral balance. Functional performance was measured based on a figure-of-8 hop test, up-down hop test, and a single hop test. All data were analyzed by repeated two-way ANOVA tests. Results: A time by group interaction effect was not observed in the medio-lateral balance test, figure-of-8 hop test, or single hop test (p>0.05). A time by group interaction effect was observed in the anterior-posterior balance and up-down hop test (p<0.05). Conclusion: These results suggest that dual task training improved balance and functional performance better than single task training for some items.

The Effect of Core Program Exercise on Dynamic Balance of the Patient with Post-Stroke Hemiplegia (코어프로그램이 편마비환자의 동적 균형 감각에 미치는 영향)

  • Kim, Kwang-Soo;Seo, Hyun-Du;Lee, Byoung-Hee;Kim, Seong-Yeol;Lee, Jong-Soo
    • Journal of Korean Medicine Rehabilitation
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    • v.20 no.2
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    • pp.79-87
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    • 2010
  • Objectives : The purpose of this study is to analyze and to compare the difference and the change between dynamic balance exercise group and dynamic balance exercise with core program exercise group. Also, based on this data, to prescribe effective exercises for hemiplegic patients and the pubis in order to achieve more effective dynamic balance exercise rehabilitation and better dynamic balance exercise in the field of therapeutical exercise. Methods : Twenty subjects(Core program exercise plus Dynamic balance exercise group, CP: 10, Dynamic balance exercise group, NCP: 10) were chosen among hemiplegic patients. Measurements of dynamic balance were evaluated at initial presentation(pretest) and after 4, 8, 12 weeks'. Paired t-test and Repeated measured ANOVA was utilized to detect the mean difference between the groups. Results : Firstly, after 4 weeks' and 8 weeks' and 12 weeks' CP exercise and NCP exercise, there were all significant difference to increase dynamic balance (p<0.05). secondly, after 4 weeks' and 8 weeks' and 12 weeks' CP and NCP exercise, there was significant difference to increase dynamic balance more CP group than NCP group. Lastly, among 4 weeks' and 8 weeks' and 12 weeks' CP exercise, there was progressively significant difference to increase dynamic balance(p<0.05). Conclusions : This study showed that dynamic balance exercise with core program exercise is an effective treatment strategy for hemiplegic patients than dynamic balance exercise rehabilitation.

Effect of Visual Block, Task Type, and Participation in an Exercise Program on Static Balance in the Elderly (시각 차단, 과제 유형, 및 운동프로그램 참여가 노인의 정적 균형에 미치는 영향)

  • Woo, Young-Keun;Yi, Chung-Hwi;Cho, Sang-Hyun;Kwon, Hyuk-Cheol
    • Physical Therapy Korea
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    • v.10 no.3
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    • pp.1-15
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    • 2003
  • The purpose of this study was to assess the effect of visual block (eyes open or closed), mental task type, and participation in an exercise program on static balance in the elderly. The subjects were 34 elderly (>65 years old) residents of a social welfare institute in Gyeonggi-do. We measured the following variables. Berg balance scale, mini mental state examination, balance performance monitor (sway area, path, and maximal sway velocity), age, weight, height and whether the subject participated in an exercise program. Scores for the Berg balance scale and mini mental state examination were evaluated to assess static balance ability either alone (single task paradigm) or while performing a mental task (dual task paradigm). Static balance variables that were measured included sway area, path, and maximal sway velocity. Each test was repeated three times. Multiple regressions analysis was used to examine the effect of each variable on static balance ability. For the dual task paradigm, static balance was affected by whether the subject participated in an exercise program. The Berg balance scale score for subjects with their eyes open was affected by whether they participated in an exercise program, while this variable in addition to the height and weight of subjects were determining variables in subjects with their eyes closed. As a result, whether subjects participated in an exercise program affected their static balance irrespective of whether their eyes open or closed. Therefore, regular exercise is recommended for elderly people and further research is needed to examine the relationship between static and dynamic balance while performing mental tasks such as cognition and attention.

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A Study on the Correlation between Static, Dynamic Standing Balance Symmetry and Walking Function in Stroke (뇌졸중 환자의 정적, 동적 선자세 균형 대칭성과 보행 기능의 상관관계 연구)

  • Kim, Joong-Hwi
    • The Journal of Korean Physical Therapy
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    • v.24 no.2
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    • pp.73-81
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    • 2012
  • Purpose: The aim of the present study was to measure the standing balance symmetry of stroke patients using a force-plate with computer system, and to investigate the correlation between the standing balance symmetry and that of the walking function in stroke patients. Methods: 48 patients with stroke (34 men, 14 women, $56.8{\pm}11.72$ years old) participated in this study. Static standing balance was evaluated by the weight distribution on the affected and the nonaffected lower limbs, sway path, sway velocity, and sway frequency, which reflected the characteristic of body sway in quiet standing. Dynamic standing balance was evaluated by anteroposterior and mediolateral sway angle, which revealed the limit of stability during voluntary weight displacement. Symmetry index of static standing balance, (SI-SSB) calculated by the ratio of the affected weight distribution for the nonaffected weight distribution, and symmetric index of dynamic standing balance (SI-SDB) by the ratio of the affected sway angle for the nonaffected sway angle. Functional balance assessed by a Berg balance scale (BBS), and the functional walking by 10m walking velocity, as well as the modified motor assessment scale (mMAS). Results: Static balance scales and SI-SSB was the only correlation with BBS (p<0.05). Dynamic balance scales and SI-DSB, not only was correlated with BBS, but also with 10m walking velocity and mMAS (p<0.01). Additionally, there was a significant difference between SI-SSB and that of SI-DSB (p<0.01). Conclusion: The balance and the walking function relate to real life in the stroke showed strong relationships with the dynamic standing balance symmetry in the frontal plane and the ability of anterior voluntary weight displacement in sagittal plane.

The Effects of Visual Biofeedback Balance Training on Functional Ability in Children with Cerebral Palsy : A Pilot Study

  • Yun, Chang-Kyo;Yoo, Ji-Na
    • Journal of the Korean Society of Physical Medicine
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    • v.11 no.3
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    • pp.133-139
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    • 2016
  • PURPOSE: The purpose of this study is to examine the impact of balance training on a three-dimensional balance trainer that provides the up-and-down vertical movement of the knee joint and left-and-right horizontal movement, along with visual feedback on the functional ability of children with spastic cerebral palsy (CPs). METHODS: 8 CPs participated in this study. The experiment was implemented for 40 minutes, three times a week for a total of six weeks. The subjects received general physiotherapy for 15 minutes in each session focused on balance and walking, as based on the neuro-developmental treatment theory. Balance training was performed for 20 minutes on a three-dimensional balance trainer where knee joint movement providing visual feedback is applied. The evaluations were conducted before and after the test, and posture sway was measured using 10 Meter Walking Test (10MWT), Timed Up & Go Test (TUG), and the Good Balance System to evaluate the functional ability and balance of the subjects RESULTS: 10MWT was not statistically significant (p>.05). On the contrary, TUG and postural sway indicate static balance showed a statistically significant decrease (p<.05). In a static balance test using the Good Balance System, the average moving speed statistically significantly decreased in the AP and ML directions (p<.05), and the mean velocity moment also significantly decreased (p<.05). CONCLUSION: These findings suggested that balance training using the three-dimensional balance trainer, with the features of visual feedback and up-and-down knee joint movement effects on increasing dynamic and static balance.

Vibration Characteristics of High Pressure Multi-Stage Pump with Anti-Swirl Injection Balance Sleeve (역스월 유로 입력을 가지는 밸런스 슬리브를 적용한 고압 다단 펌프의 진동 특성)

  • 곽현덕;이용복;김창호;이봉주
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.214-219
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    • 2002
  • As the tangential flow inside the clearance of tribe elements such as bearings and seals is increased as the shaft speed increases, the system stability will be decreased due to the increment of the instability parameter. To reduce the tangential flow inside the clearance of the balance sleeve, anti-swirl injection mechanism is applied. The balance sleeve is used in resisting the axial force induced by impeller in high pressure multi-stage pump. In this paper, total three cases are experimentally investigated; original balance steeve, anti-swirl injection balance steeve with 0 axial degree and anti-swirl injection balance sleeve with 30 axial degree. Experiments are focused in the comparison of vibration level and leakage flow rate. The results clearly shows that the anti-swirl injection balance sleeve with 0 axial degree improves the vibration characteristics. However, the anti-swirl injection balance sleeve with 30 degree aggravates the vibration characteristics. In the standpoint of leakage performance, both anti-swirl injection balance sleeves show the better result than the original balance sleeve.

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Can Functional Assessment Tools Reflect Balance Abilities at 3 Months after Total hip Arthroplasty?

  • Kim, Min-Woo;Ryu, Young-Uk
    • Journal of the Korean Society of Physical Medicine
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    • v.13 no.4
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    • pp.51-58
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    • 2018
  • PURPOSE: This study was conducted to determine if the Harrison hip score (HHS), a tool for assessing hip joint function, and the Burg balance scale (BBS), a general balance assessment tool, actually reflect the balance ability of total hip arthroplasty (THA) patients 3 months after surgery. In addition, this study investigated the initial weight distribution strategy for bilateral lower extremity after THA surgery to understand the balance of THA patients. METHODS: Fourteen 3-month THA patients performed static dual standing and sit-to-stand (STS) tasks. Ground reaction forces on each leg were collected to calculate the weight distribution symmetricity (SWD), and the HHS, functional HHS (f-HHS), and BBS were evaluated. Correlation analyses between SWD and the HHS (also f-HHS) and BBS were then applied to the THA patients. RESULTS: The correlations between functional evaluation tools (HHS, f-HHS, BBS) and SWD were weak strength for the static balance task, but moderate for the dynamic STS task. Among the evaluation tools used in the present study, f-HHS was most useful for evaluation of dynamic balance ability. CONCLUSION: The results suggest that use of HHS, f-HHS, and BBS as functional evaluation tools does not provide meaningful information regarding balance ability, but that they are useful for evaluating dynamic balance ability of THA patients. The dynamic balance ability at 3 months after THA seems to be under development.

Effects of Transcranial Direct Current Stimulation on the Static Balance Ability of Patients with Back Pain

  • Oh, Seung Keun;Kim, Yong Nam
    • The Journal of Korean Physical Therapy
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    • v.31 no.5
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    • pp.328-332
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    • 2019
  • Purpose: This study examined the effects of transcranial direct current stimulation (tDCS) on the static balance ability of patients with back pain. Methods: The subjects comprised of 30 males and females in their 20s, who were divided into two groups with and without tDCS. The balance posture ratio score was calculated to determine the changes in balance ability before and after the application of tDCS using balance equipment. A paired t-test was conducted to determine the changes over time, and an independent t-test was performed to determine the changes between the groups. The significance level was set to ${\alpha}=0.05$. Results: A significant difference in the changes in the static balance ability of CTDCSG between before and after applying tDCS was observed while the subjects' eyes were open (p<0.05). A comparison between the groups after the experiments revealed significantly increased changes in CTDCSG compared to STDCSE (p<0.05). The changes in static balance ability were not significant when the subjects' eyes were closed (p>0.05). Conclusion: The application of tDCS positively changed the static balance ability of patients with back pain. The results of this study showed that tDCS could be used as an intervention to increase the static balance ability of patients with back pain in the clinical field. The study results could be used further as foundational data for future studies on tDCS.

Vibration Characteristics of High Pressure Multi-stage Pump with Anti-swirl Injection Balance Sleeve (역스월 유로 입력을 가지는 밸런스 슬리브를 적용한 고압 다단 펌프의 진동 특성)

  • 곽현덕;이용복;김창호;이봉주
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.12 no.8
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    • pp.632-638
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    • 2002
  • As the tangential flow inside the clearance of tribo elements such as bearings and seals is increased as the shaft speed increases, the system stability will be decreased due to the increment of the instability parameter. To reduce the tangential flow inside the clearance of the balance sleeve, anti-swirl injection mechanism is applied. The balance sleeve is used in resisting the axial force induced by impeller in high pressure multi-stage pump. In this paper, total three cases are experimentally investigated; original balance sleeve, anti-swirl injection balance sleeve with 0 axial degree and anti-swirl injection balance sleeve with 30 axial degree. Experiments are focused in the comparison of vibration level and leakage flow rate. The results clearly shows that the anti-swirl injection balance sleeve with 0 axial degree improves the vibration characteristics. However, the anti-swirl injection balance sleeve with 30 degree aggravates the vibration characteristics. In the standpoint of leakage performance, both anti-swirl injection balance sleeves show the better result than the original balance sleeve.

A Study on Generating Process of Regional Balance Point Temperature for Heating Degree-days in Korea (국내 난방도일의 지역별 균형점온도 산정 과정에 관한 연구)

  • Park, So Min;Song, Doo Sam
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.29 no.9
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    • pp.482-495
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    • 2017
  • Degree-days are practically used as a tool to estimate energy consumption for heating and cooling. Degree-days are calculated by summing differences of balance point temperature and outside temperature for the analyzed period. Determining balance point temperature is a key point in calculating accurate degree-days. However, ASHRAE standards are used for balance point temperature in Korea because balance point temperature considering climate conditions and building thermal performance is not proposed in Korea. This study proposes the process to generate balance point temperature for heating degree-days considering Korean climate and building conditions. Also, a new balance point temperature for three regions in Korea will be suggested in this study. Balance point temperature of Seoul is approximately $15.0^{\circ}C$, lower than the current standard of $18.3^{\circ}C$. Balance point temperature of Seoul considering climate conditions and building performance can be different from the ASHRAE suggested value ($18.3^{\circ}C$). Results revealed the current standard for balance point temperature should be changed considering climate and building conditions in Korea.