• 한국운동역학회지
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• 제20권3호
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• pp.337-344
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• 2010

This study was conducted on male college students with pronated foot to measure the foot pressure by having them wear three kinds of mid-sole wedge ($0^{\circ}$, $5^{\circ}$, $10^{\circ}$). Maximum force, foot contact area, mean pressure and peak pressure were measured using a foot pressure distribution measuring instrument. And the surface of the foot sole was divided into 10 areas. Regarding maximum force, there were statistically significant difference in the area 3 of the middle foot(p<.05). Regarding the foot contact area, it appeared broad in the outside area(1, 3, 5) of the foot according to mid-sole wedge, and there was statistically significant difference in the area 1 of the rear foot(p<.05) and the area 3 of the middle foot(p<.05). Mean pressure by foot area decreased in the inside of the foot according to mid-sole wedge, and there was statistically significant difference in the area 2 of the rear foot(p<.05) and the area 3 of the middle foot(p<.05). Regarding the peak pressure by foot area, the pressure roughly decreased in the inside area(2, 4, 7) of the foot according to mid-sole wedge, and there was statistically significant difference in the area 1(p<.05), 2(p<.05) of the rear foot and the area 3 of the middle foot(p<.05).

• Physical Therapy Rehabilitation Science
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• 제5권2호
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• pp.78-83
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• 2016

Objective: The purpose of this study was to investigate whether the intrinsic foot muscle training method can improve the medial longitudinal arch in patients with chronic ankle injury and with pronated feet, as well as to investigate for the most effective exercise method for these patients. Design: Randomized controlled trial. Methods: Thirty men and women with pronated feet had participated in this study and were allocated to either the short foot exercise group (SFEG) or the towel curl exercise group (TCEG) randomly. SFEG and TCEG underwent exercises three times a week for 8 weeks, with three sets per day, totalling up to 5 minutes per day. The navicular drop test (NDT) was used in order to assess for changes in the medial longitudinal arch and the Cumberland ankle instability tool (CAIT) was used to assess for ankle instability of the chronic ankle sprain patients. Results: There was a significant increase in CAIT scores in the SFEG (p<0.05) and a significant difference between groups was presented (p<0.05). The NDT scores were significantly decreased in both groups (p<0.05). In the SFEG, the NDT scores were more decreased than in the TCEG (p<0.05). Conclusions: These results suggest that short foot exercises are more effective in providing intrinsic foot muscle training for patients with pronated feet among chronic ankle sprain patients. Furthermore, short foot exercises may be used to provide ankle stability.

• 한국운동역학회지
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• 제31권2호
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• pp.95-103
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• 2021

Objective: The aim of this study was to investigate the differences in spatiotemporal gait performance, function, and pain of lower-extremity according to foot morphological characteristics. Method: This case-control study recruited 42 adults and they were classified into 3 groups according to foot morphology using navicular-drop test: pronated (≥ 10 mm), normal (5~9 mm), and supinated (≤ 4 mm) feet. Spatiotemporal gait analysis and questionnaires including Foot and Ankle Ability Measure activities of daily living / Sports, Western Ontario and McMasters Universities Osteoarthritis Index, Lower Extremity Functional Scale, International Physical Activity Questionnaire, and Tegner activity score were conducted. One-way analysis of variance was used for statistical analysis. Results: The pronated feet group showed longer loading response and double limb support in both feet and increased pre-swing phase in non-dominant feet. The supinated feet group demonstrated a longer swing phase in non-dominant feet and single limb support in dominant feet. However, there was no significant group difference in function and pain of knee joint and lower-extremity between groups. Conclusion: Our results indicated that abnormal spatiotemporal gait performance according to foot morphology. Although there was no difference in lower extremity dysfunction and pain according to the difference in foot morphology, they have the possibility of symptom occurs as a result of continuous participation in activities of daily living and sports. Therefore, individuals with pronated or supinated foot should be supplemented by utilizing an orthosis or training to restore normal gait performance.

• 대한정형도수물리치료학회지
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• 제7권2호
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• pp.57-64
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• 2001

Plantar fasciitis is a common pathological condition of the foot and often be a challenge for clinicans to successfully treat. The purpose of this article is to present and discuss selected literature on the function and anatomy, causes, symptoms and clinical treating methods of plantar fasciitis. A majority of patients with plantar fasciitis present with either a pronated or a cave foot. Pain is usually localized to the plantar medial heel at the attachment of the plantar fascia to the calcaneus. Surgical and nonsurgical techniques have been used in the treatment of plantar fasciitis. Nonsurgical management for the treatment of the symptoms and discomfort associated with plantar fasciitis can be classified into brod categories: reducing pain and inflammation. reducing tissue stress to a tolerable level, and restoring muscle strength and flexibility of involved tissue.

• 한국운동역학회지
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• 제16권1호
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• pp.65-79
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• 2006

The purpose of this study was firstly to investigate correctional function of custom semi-rigid foot orthotics for excessively pronated people during gait by observing comfort, navicular movement and leg muscles' activity according to short-term and mid-term wearing duration and secondly to understand positive and/or negative point of view of a recently proposed paradigm related to foot orthotics more profoundly. Sixteen subjects who showed excessive pronation at navicular drop test were recruited for this study. Custom semi-rigid foot orthotics were made fitting for foot characteristics of the subjects by podiatry division of Otto Bock Korea company. While wearing the foot orthotics for two months, comfort of wearing were questioned and vertical navicular movement and electromyography of leg muscles during gait were measured at the condition of both immediately after and 2 months after including a control condition, respectively. The subjects were required to walk on a treadmill at the speed of 1.5m/s and four digital video camera filmed the movement of navicular process at the speed of 60 frames/s. In conclusion, in excessively pronated group continuous increase of comfort from short-term to mid-term wearing of custom foot orthotics is assumed to be closely related with short-term and mid term correctional action, of which are consisted the decrease of the range of navicular drop and navicular raisins- the faster timing of minimum navicular position occurring, and the decrease of leg muscles' activities. This conclusion could lead to positively accept new paradigm related to foot orthotics suggested by Nigg and the author suggest that in the future study the variable which could observe navicular movement would be one of major variables to study preferred path of skeleton in the paradigm.

• 대한물리의학회지
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• 제16권4호
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• pp.139-151
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• 2021

PURPOSE: This study examined the effects of wall-squat with short-foot exercise on pain, dysfunction, and pelvic alignment in chronic low back pain patients. METHODS: Thirty outpatients diagnosed with chronic low back pain and pronated foot were enrolled in this study. The patients were divided randomly into a wall-squat with short-foot exercise group (WS; n = 15) and a normal wall-squat exercise group (NW; n = 15). These groups performed their respective exercises 15 times, for three sets, three times a week over six weeks. The visual analogue scale (VAS) was used to measure the subjects' pain, and the Roland-Morris disability questionnaire (RMDQ) was used to measure the subjects' dysfunction. A navicular drop test (NDT) was used to measure the subjects' arch height. To assess the patients' pelvic alignment, their lordosis, sacral tilt, lumbar width, sacral width, ilium length, and ilium width were measured by X-ray imaging. RESULTS: Both the WS and NW groups exhibited significant decreases in their VAS and RMDQ scores after exercise (p < .05). The WS group exhibited significant increases in their arch height (p < .05). Significant differences in the VAS, sacral tilt, sacral width, and ilium length were observed between the WS and NW groups (p < .05). CONCLUSION: These results suggest that wall-squat exercise is effective in decreasing the level of pain and dysfunction in chronic low back pain patients. In addition, the wall-squat with short-foot exercise is considered more effective in improving the pelvic alignment than without short-foot exercise. This can be an effective method for the non-pharmacological and non-surgical treatment of chronic low back pain

• The Journal of Korean Physical Therapy
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• 제22권6호
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• pp.29-33
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• 2010

Purpose: This study was designed to investigate inter-rater and intra-rater reliability of navicular drop measurements by clinicians in sitting and standing positions. Methods: Fourteen subjects with pronated foot were recruited. Two physical therapists randomly assessed the same patients on different occasions but on the same day. Almost all patients were assessed on more than one day. The intra-rater and inter-rater reliability of navicular dropwas estimated by calculation of the intraclass correlation coefficient (ICC). Results: The intra-rater reliability of navicular drop measurements ranged from 0.93 to 0.87, the inter-rater reliability from 0.98 to 0.70 with the patient in standing and sitting positions. These results showed good reliability for calculated variables. Intra-rater and inter-rater reliability of navicular drop in standing position was higher than those of sitting position. Conclusion: Although inter-rater and intra-rater reliability of navicular drop in the sitting position was lower than in the standing position, measurement of navicular drop in the sitting position showed good reliability and was acceptable for patients who could not stand alone without assistance. We recommend that having the patient in the standing position is appropriate in navicular drop measurement.

• 한국전문물리치료학회지
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• 제19권3호
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• pp.115-123
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• 2012

It is important to assess foot posture when investigating the relationship between lower extremity dysfunctions and foot types. Although several measurements of static foot posture have been used, there is no consensus regarding clinical measurements for foot posture. The aim of this study is to explore the differences among navicular drift (NDt), foot posture index (FPI), arch index (AI), dorsal arch height ratio (DAHR), normal navicular height truncated (NNHt) and to discover the most effective measurement. After foot types were classified by navicular drop test (NDp), clinical measurements of NDt, FPI, AI, DAHR, and NNHt were performed on 64 subjects' feet. ANOVA analysis was used for the variance of the difference between the NDp and the five kinds of clinical measurements, and the level of significance was set at ${\alpha}$=.05. The results showed that all five clinical measurements demonstrated significant differences with navicular drop. In post-hoc, FPI and NNHt showed significant differences in all foot types. The five clinical measurements are suitable the classification of foot types through the NDp. Therefore, it could be possible to assess correct and objective foot posture by using FPI and NNHt.

• 한국정보전자통신기술학회논문지
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• 제17권2호
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• pp.108-112
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• 2024

회내족은 넙다리두갈래근의 활성화를 증가시키거나 근피로 또는 과사용증후군(overuse syndromes)을 초래한다. 본 연구에서는 회내각(pronation angles)이 20° 이상인 회내족 피험자를 대상으로 회내각과 근피로지수와의 관계를 파악하는 것이다. 나이 범위가 15-61세인 12명의 피험자가 실험에 참여하였으며, 30초 동안 4.5 km/h의 속도로 트레드밀 보행시 넙다리두갈래근의 근전도를 측정하여 근피로지수인 중앙주파수와 저주파수 대역 크기의 기울기를 산출하였다. 본 연구에 참여한 피험자로부터 산출한 두 가지 근피로지수와 회내각 사이의 관계가 정상인과 유사할 것이라는 가정 하에 실험한 결과, 근피로지수와 회내각 사이의 유의한 상관성을 얻을 수 있었다 (r>0.60; p<0.05).

• 한국전문물리치료학회지
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• 제29권3호
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• pp.208-214
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• 2022

Background: Pronated foot posture (PFP) contributes to excessive dynamic knee valgus (DKV). Although foot orthoses such as medial arch support (MAS) are widely and easily used in clinical practice and sports, few studies have investigated the effect of MAS on the improvement of DKV during stair descent in individuals with a PFP. Moreover, no studies reported the degree of improvement in DKV according to the severity of PFP when MAS was applied. Objects: This study aimed to examine the immediate effect of MAS on DKV during stair descent and determine the correlation between navicular drop distance and changes in DKV when MAS is applied. Methods: Twenty individuals with a PFP (15 males and five females) participated in this study. The navicular drop test was used to measure PFP severity. The frontal plane projection angle (FPPA) was calculated under two conditions, with and without MAS application, using 2-dimensional video analysis. Results: During stair descent, the FPPA with MAS (173.1° ± 4.7°) was significantly greater than that without MAS (164.8° ± 5.8°) (p < 0.05). There was also a significant correlation between the navicular drop distance and improvement in the FPPA when MAS was applied (r = 0.453, p = 0.045). Conclusion: MAS application can affect the decrease in DKV during stair descent. In addition, MAS application should be considered to improve the knee alignment for individuals with greater navicular drop distance.