• Title/Summary/Keyword: Foot pressure

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Acute Effects of Prolonged 15minnute Static Stretching on Foot Contact Area Surface and Foot Pressure Changed in Young Adults (15분간의 지속적인 스트레칭이 족저압과 족저면적 변화에 미치는 영향)

  • Kuk, Jung-Seok
    • Journal of Korean Physical Therapy Science
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    • v.18 no.4
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    • pp.59-64
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    • 2011
  • Purpose : The purpose of this study was to evaluate the effects of the stretching of the calf muscles on foot pressure and contact area in young adult. Participants stood on a wedge board that was sloped between 15~25 degree for 15min. After stretching participants stood quietly on force plate, result was recorded. Participants stood on a force plate for 1 min in eye closed condition, and them the foot pressure and area was recorded. The following variables were calculated off-line: anterior and posterior foot pressure and contact area, medial and lateral foot pressure and contact area. Results showed that anterior pressure change due to stretch, but mediolateral was not significant. This result suggested that stretching of the calf muscle has the effect of increasing anterior pressure by flexibility change on calf muscle, so this effects might be effective intervention for reduce of serious problem to neurologic patients in therapy session.

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The Research of the Insole Suitability in Accordance with Foot Characteristics of Women (성인 여성의 발 특성에 따른 인솔 적합성 연구)

  • Choi Soon-Bok;Lee Won-Ja
    • Journal of the Korean Society of Clothing and Textiles
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    • v.29 no.6
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    • pp.783-792
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    • 2005
  • The purpose of this research is to develop appropriate Insole according to foot characteristics of female adults. This research concentrates on proving the effectiveness of Insole on resolving foot discomforts by analyzing the differences between the fitting and foot pressure before and after wearing Insole. Among 216 female testers of previous research, six testers wear selected and placed into six different groups classified according to foot discomforts and foot characteristics. After wearing Insole, the results indicates that the entire groups represented the improvement of fitting and the mitigation of foot discomfort. The results of foot pressure experiment shows that the maximum pressure of foot spreads out evenly after wearing Insole, which indicates the effectiveness of Insole. This efficacy works particularly well for foot testers of second and sixth group. The results indicate that group 6, which consist of the flat-footed and the old, have more noticeable effects derived from Insole, whereas group 3 and 5 do not, due to its constitution of people with fairly normal feet. Furthermore, it was evident that maximum pressure played a major role in proving the beneficial effects of Insole, one of which is to scatter the maximum pressure of heel away and lessen the foot pressure of plantar.

Foot Pressure Analysis of Chronic Low Back Pain Patients by Foot Analyzer (Foot analyzer를 이용한 만성 요통 환자들의 족저 압력 분석)

  • Kim, Eun-Joo;Cho, Yu-Jeong;Song, Mi-Yeon
    • Journal of Korean Medicine Rehabilitation
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    • v.19 no.4
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    • pp.115-126
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    • 2009
  • Objectives : The aim of this study was to evaluate whether the foot pressure distribution correlates with the lumbo-sacral curvature, and the Oswestry Disability Index in chronic low back pain patients. Methods : We measured the fore foot pressure and the rare foot pressure using the foot analyzer in 28 women subjects with chronic low back pain. The lumbo-sacral curvature and the Oswestry Disability Index(ODI) were also measured. Results : 1. Subjects with higher ODI(%) had significantly lower Fore foot pressure/Rare foot pressure ratio(F/R ratio) (p<0.01). 2. Lumbar lordotic angle and Ferguson angle were inversely related to ODI(%) (p<0.05, p<0.01). 3. Lumbar lordotic angle and Ferguson angle were positively related to F/R ratio (all p<0.05). Conclusions : Using the Foot Analyzer(FA-48S, Tech storm Inc.) we have shown that F/R ratio has significant correlation with the lumbo-sacral curvature and the Oswestry Disability Index. These result suggest that the Foot analyzer may be used in assessing back pain in chronic low back pain patients.

The Effects of Foot Placement and Lifting on Lower Extremity Muscle Activity and Foot Pressure During Sit to Stand in Hemiparetic Patients (뇌졸중 환자의 물건 들고 일어서기 동작이 하지근 활동도 및 족저압에 미치는 영향)

  • Kim, Hee-Tag;Lim, Wan-Sang
    • Journal of Korean Physical Therapy Science
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    • v.17 no.3_4
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    • pp.29-39
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    • 2010
  • Purpose: The purpose of this study was to examine the effect of foot position and lifting an object on muscle activity and foot pressure during sit to stand(STS) in hemiparetic patients. Methods: Fourteen patients participated in this study. Surface electromyography was used to collect muscle activity and foot pressure measurement system was used to analyze foot pressure in hemiparetic side. Three different foot position was assumed(anterior, neutral, posterior) in hemiparetic side. The repeated two-way analysis of variance and multiple comparisons were conducted to determine statistical significance with a significance level of 0.05. Results: The results were as follows. 1) Lower extremity muscle activity was significantly higher(p<0.05) in biceps femoris and tibialis anterior muscle during STS without holding an object. With changing positions of the affected foot, muscle activity was significantly increased (p<0.05) in vastus medialis and lateral gastrocnemius when the foot was positioned in posterior. 2) There was no significant difference(p>0.05) in foot pressure during STS with object holding and foot positioning. Conclusion: Muscle activity showed a significant increase when the foot was positioned in posterior in comparison to the muscle activity when the foot was in neutral or anterior position.

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A Review of Biomechanical Treatments for the Diabetic Foot (당뇨발을 위한 생체역학적 치료방법들에 관한 고찰)

  • Koh, Eun-Kyung;Jung, Do-Young
    • The Journal of Korean Physical Therapy
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    • v.19 no.5
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    • pp.51-63
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    • 2007
  • Diabetic foot ulcers result from abnormal mechanical loading of the foot, such as repetitive pressure applied to the plantar aspect of the foot while walking. Diabetic peripheral neuropathy causes changes in foot structure, affecting foot function and subsequently leading to increased plantar foot pressure, which is a predictive risk factor for the development of diabetic foot ulceration. To early identify the insensitive foot makes it possible to prevent diabetic foot ulceration and to protect the foot at risk from abnormal biomechanical loading. Abnormal foot pressures can be reduced using several different approaches, including callus debridement, prescription of special footwear, foot orthosis. injection of liquid silicone, Achilles tendon lengthening, and so forth. Off-loading of the diabetic wound is a key factor to successful wound healing as it is associated with reduced inflammatory and accelerated repair processes. Pressure relief can be achieved using various off-loading modalities including accommodative dressing, walking splints, ankle-foot orthosis, total contact cast, and removable and irremovable cast walkers.

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Analysis of Foot Pressure according to the Work Postures on Fire Fighters (소방대원들의 작업자세에 따른 족저압력 분석)

  • Son, Sung Min;Roh, Hyo Lyun
    • Journal of the Korean Society of Safety
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    • v.28 no.1
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    • pp.88-94
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    • 2013
  • The purpose of this study is to find out the difference of foot pressure according to the firefighter's work postures for providing the basic information to prevent Musculoskeletal disorders. This study was conducted by 9 male firefighters. Work postures were selected for rescuee handling, fire hose and hydraulic rescue equipment work postures. These were divided into 3 position, "High", "Middle" and the postures of taking out and letting down hydraulic rescue equipment were analyzed as starting point and end point respectively. Foot Pressure was used to analyze contact area, peak pressure, and maximum force in terms of work postures, and compared between fire hose and hydraulic rescue equipment work postures. The results of foot pressure are as follows. According to the results of rescuee handling work postures, one person handling posture showed wide contact area and foot pressure showed the highest at right foot. Accoridng to the (High), (Middle), (Low) postures of fire hose, the results didn't show the difference among the contact area, peak pressure and maximum force. As the results of hydraulic rescue equipment work postures, (Low) postures showed the highest in terms of the right foot of contact area, peak pressure and maximum force and (High) postures showed the highest in left foot. The increase of foot pressure lead to be inconvenience of low extremity and muscle fatigue for maintaining postural control cause pain. Thus, it is necessary to design insole-equipped working shoe for reduce the impulse and effect of foot during the rescuee handling work which standing out as foot pressure.

A Study on Foot Pressure by using an Insole Equipped with the Orthogonal Grid Sensor (직교 그리드 센서가 삽입된 인솔을 이용한 족압분포 연구)

  • Son, Jeong-Hyeop;Jun, In-Jun;Chang, Seung-Hwan
    • Composites Research
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    • v.34 no.3
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    • pp.161-166
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    • 2021
  • In this study, we present a research method to develop a shoe that prevents foot injury by inducing the foot pressure. An orthogonal grid sensor was used to check the foot pressure in the upright standing position, and the change in the foot pressure distribution for various conditions was compared. We checked the conditions for distributing foot pressure efficiently by changing the spring constant of the spring inserted into the sole of the shoe and the foot pressure generated with or without the arch of the insole. In order to minimize the experimental error from the randomness of the human body's behavior, it is possible to predict through foot pressure under certain conditions through finite element analysis that simulates the pressure distribution. By checking the change of foot pressure according to the number and arrangement of springs through finite element analysis, conditions were established to provide more efficient foot pressure. The result can be used for designing footwear for patients with diabetic feet.

Effects of Foot Strengthening Exercises and Functional Insole on Range of Motion and Foot Plantar Pressure in Elderly Women

  • Shin, Jin Hyung;Lee, Joong Sook;Han, Ki Hoon;Bae, Kang Ho
    • Korean Journal of Applied Biomechanics
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    • v.28 no.1
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    • pp.45-54
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    • 2018
  • Objective: The purpose of this study was to investigate the effect of foot strengthening exercise program and functional insoles on joint angle and plantar pressure in elderly women. Thirteen elderly women who were enrolled in a university senior citizens academy of a metropolitan city in 2017 were divided into two groups: exercise group with functional insole (n=7) and exercise group without functional insole (n=6). Method: Three-dimensional motion analysis and Pedar-X were performed to compute the joint angle and the foot plantar pressure, respectively. Two-way repeated measure ANOVA was conducted to compare dependent variables within and between groups. The significance level was set at ${\alpha}=.05$. Results: The range of motion (ROM) of the ankle, knee, and hip joints in the exercise group with functional insole increased significantly more than the exercise group without functional insole. In both the experimental group and the comparison group, the maximum foot plantar pressure and the mean foot plantar pressure were decreased, but the comparison group without functional insole showed more decrease. Since the experimental group demonstrated greater pressure than the comparison group in the contact area (forefoot, midfoot), it was distributed over a greater area. Conclusion: The results of this study suggest that participation in foot strengthening exercises and using a functional insole has more positive effects than foot strengthening exercises alone on the joint angle and plantar pressure in elderly women. Increased foot plantar pressure led to an increased contact area (forefoot, midfoot) for distribution of the foot plantar pressure, but the effect of reducing the maximum and average plantar pressures was incomplete. However, wearing functional insoles along with exercise, could help in improving the stability of the joints, by increasing the range of motion, and could help the elderly in movement of the muscles more effectively, leading to an improvement in gait function.

The Effect of Height Increase Elevator Shoes Insole on Gait and Foot Pressure (키높이 깔창이 성인남성의 보행 및 발의 압력분포에 미치는 영향)

  • Goo, Bong-Oh
    • Journal of the Korean Society of Physical Medicine
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    • v.6 no.2
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    • pp.199-205
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    • 2011
  • Purpose: The purpose of this study was to investigate the effect of 0cm, 2.5cm, 5cm height increase elevator shoes insole on gait and foot pressure Methods: Fifteen young adult were recruited this study. Gait and foot was measured by Gait AnalyzerTM(Tech Storm Inc. korea). Statistical analysis was used one-way ANOVA to know difference between 0cm, 2.5cm insole and 5cm insole Results: There was no significantly difference on foot length, foot width, foot angle, step time during gait. But step length and step width was significantly difference during gait. There was no significantly difference on gait ratio during stance phase. There was significantly difference on forefoot pressure and rearfoot pressure ratio. Conclusion: These results indicate that height increase elevator shoes insole may be caused step length, step width decreaseed during gait. It caused forefoot pressure increased and rearfoot pressure decreased on foot.

Ground Reaction Force and Foot Pressure Analysis During Golf Iron Swing by Gender (골프 아이언 스윙 시 성별에 따른 지면반력 및 족저압력 분석)

  • Park, Jae-Young
    • Korean Journal of Applied Biomechanics
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    • v.20 no.2
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    • pp.167-174
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    • 2010
  • This study aims to quantitatively compare and analyze kinetic variables in the motion of male and female professional golfers to suggest basic scientific materials for golf iron swing. Five male and five female professional golfers participated in this experiment. Ground reaction force and foot pressure were measured during performing 10 swings for each participants using an iron club. The result of the ground reaction force indicates that the force occurs at the left foot toward right(-) direction in the mid-downswing(E3) and impact(E4) events in X-axis, while it occurs at the right foot toward anterior(-) direction in Y-axis for both male and female, showing a big difference between them. Also, in Z-axis, large force occurs at the left foot in most events. The analyzed result on foot pressure indicates that men have the highest pressure and area at the left foot, and women have the highest ones at the right foot in the mid-downswing(E3) and impact(E4) events in the max foot pressure, ground contact area and average pressure. It is considered that there is difference of central movement methods between men and women. Thus, different education and training on golf swing should be necessary by gender due to their different patterns of golf iron swing.