만성 요통 환자와 정상 성인의 정적, 동적 족저압 비교 연구

이전형,김기철,서현규,박윤기 대한정형도수물리치료학회 2013 대한정형도수물리치료학회지 Vol.19 No.1

런지 시 기저면 변화에 따른 넙다리 근육의 근활성도와 족저압 비교 연구

이전형,이명희,김기철 대한고유수용성신경근촉진법학회 2017 PNF and Movement Vol.15 No.3

Purpose: This study aimed to suggest effective lunge exercise methods for various purposes by comparing differences in the muscle activity of thigh and plantar pressure according to changes in base of support during lunge exercises. Methods: The subjects were 20 college students who agreed to participate in the experiment. They performed three types of lunges—a basic lunge (BL), wide lunge (WL), and narrow lunge (NL). In a static position during each lunge, the muscle activity of the thigh and plantar pressure were measured. Each movement was maintained for 7 seconds, and the muscle activity for the 3 seconds in the middle was measured and analyzed. The plantar pressure was divided into six areas for analysis. The subjects randomly performed the lunges to prevent the influence of an experimental sequence. Each movement was performed three times, and the mean value of the three measurements was analyzed. Results: The analysis of muscle activities in the thigh during the three lunge movements showed statistically significantly higher muscle activity of biceps femoris in WL and NL than BL. Moreover, the analysis of plantar force showed statistically significant differences between BL and WL and WL and NL on the medial-forefoot and medial-midfoot, as well as between BL and WL and BL and NL on the lateral-midfoot. The analysis of plantar contact pressure exhibited statistically significant differences between BL and NL and WL and NL on the medial-forefoot, as well as a statistically significant difference between WL and NL on the medial-midfoot and lateral-hindfoot. Conclusion: This study suggests that changing the base of support during lunges can be useful to suit the purposes of various rehabilitation programs.

호흡운동이 뇌졸중 환자의 흉곽 확장과 폐 기능에 미치는 영향

이전형,권유정,김경,Lee, Jeon-Hyeong,Kwon, Yoo-Jung,Kim, Kyung 대한물리치료학회 2009 대한물리치료학회지 Vol.21 No.3

Purpose: This study examined whether breathing exercises might increase the chest expansion and pulmonary function of stroke patients. Methods: Twenty four patients with stroke were assigned randomly into two groups: a combination of diaphragmatic resistive breathing and pursed-lip breathing exercise (CB) group (n=10) and control group (n=14). The CB group completed a 4-week program of diaphragmatic resistive breathing and pursed-lip breathing exercise. The subjects were assessed using the pre-test and post-test measurements of the chest expansion (length for resting, deep inspiration, deep expiration, deep expiration-inspiration) and pulmonary function (forced vital capacity (FVC), forced expiratory volume at one second (FEV1), FEV1/FVC, peak expiratory flow (PEF), vital capacity (VC), tidal volume (TV), expiratory reserve volume (ERV), inspiratory reserve volume (IRV)). Results: A comparison of the chest expansion between the pre and post tests revealed similar rest, deep inspiration, deep expiration, and deep expiration-inspiration lengths in the CB and control groups (p>0.05). A comparison of the pulmonary function between pre and post tests, revealed significant improvements in the FVC, FEV, PEF, VC, IRV, and ERV in the CB group (p<0.05). There was a significant difference in the FVC, FEV1, PEF, VC and IRV between the 2 groups (p<0.05). Conclusion: These findings suggest that breathing exercise should help improve the pulmonary function, such as the volume and capacity. This suggests that the pulmonary functions of stroke patients might be improved further by a continued respiratory exercise program.

여성 노인의 신발 굽 높이가 균형에 미치는 영향

이전형,김경 한국스포츠리서치 2007 한국 스포츠 리서치 Vol.18 No.2

연성면에 따른 양발지지와 한발지지 시 족저압 비교

이전형,정형재,김신균 대한고유수용성신경근촉진법학회 2013 PNF and Movement Vol.11 No.2

Purpose : The purpose of this study was to investigate a plantar pressure distribution and the trajectory of the center of pressure on double limb support and single limb support according to level surface, air cushion, and aero step. Methods : 21 healthy adults participated in this study. The plantar pressure were assessed at three different surface conditions(on the level surface, air cushion, and aero step) on double limb support and single limb support. Testing orders were selected randomly. Results : Plantar pressure distribution show a significant difference contact area 1 and contact area 3 on double limb support and single limb support. The trajectory of the center of pressure show an significant difference anteroposterior(AP), mediolateral(ML), and total displacement on double limb support and single limb support. Conclusion : Through the use of soft surface as air cushion and aero step will be using the ankle strategy. This will be to strengthen the muscles around the ankle. Consequently, should help to improve stability and coordination. .

평지 보행 시 발 각도 형태에 따른 발바닥 압력 비교 연구

이전형,김기철,국중석 대한고유수용성신경근촉진법학회 2014 PNF and Movement Vol.12 No.2

Purpose: The purpose of this study was to examine the influence of foot angles on plantar pressure and the center of pressure (COP) trajectory length during level walking. Methods: The study subjects were 30 female university students without orthopedic diseases in the foot. The foot angle was divided into three forms (out-toeing, normal, in-toeing). The subjects practiced each type of gait, and then performed each of level walking, three times, and their averages were calculated. A plantar pressure measurement instrument was used, and the maximum force was obtained by dividing the foot into nine regions covering the anterior medial-lateral, middle medial-lateral, and posterior medial-lateral. The COP trajectory length was statistically processed by obtaining medial-lateral, anterior-posterior, and entire travel distance. Results: During normal walking, the maximum force was significantly higher in the anterior lateral than in the other areas, and the COP trajectory length was significantly shorter in the front-back and entire travel distances (p<0.05). During stair climbing. Conclusion: Walking at abnormal foot angles does not cause appreciable problems in the short term as pressure is concentrated on a specific plantar part. However, it becomes the cause of deformed foot structures and can result in musculoskeletal disabilities in the long term. Therefore, a kinesiatrics-based intervention is required to maintain normal foot angles. .

The Effect of Calf Stiffness on Gait, Foot Pressure and Balance in Adults

이전형,장종성 대한물리치료학회 2019 대한물리치료학회지 Vol.31 No.6

Purpose: The purpose of this study was to investigate the effects of calf tightness on gait, plantar pressure, and balance in adults. Methods: A total of 60 participants were divided into a normal group of 30 subjects with normal dorsiflexion angle (20-25 degrees) and an experimental group of 30 subjects with limited dorsiflexion angle (0-15 degrees) due to calf tightness. Gait ability and foot pressure of the subjects was measured with a treadmill, and the balance ability was measured by PROKIN system. Results: A significant difference in COP length, loading response, and single limb support was observed between groups. The COP length and single limb support ratio in the normal group was greater than in the experimental group, but the experimental group showed a higher ratio for loading response in the gait ratio. Conclusion: Our results indicated that calf tightness was negative effects on balance and gait ability, so assessment of the muscle tightness should be considered during exercise and treatment.

Comparison of Cervical Flexor Muscles Thickness During Cranial-Cervical Flexor Exercise According to Pressure Levels and Eye Directions in Healthy Subjects

장종성,이전형 대한물리치료학회 2015 대한물리치료학회지 Vol.27 No.1

Purpose: The purpose of this study is to investigate differences of cervical flexor muscle thickness (i.e., sternocleidomastoid muscle anddeep cervical flexor muscles) depending on levels of pressure bio-feedback unit and eye directions during cranial-cervical flexor exercisein healthy subjects. Methods: A total of 30 subjects (12 males and 18 females) who had no medical history related to musculoskeletal and neurological disorderswere enrolled in this study. They were instructed to perform cranial-cervical flexion exercise with adjustment of five different pressures(i.e., 22 mmHg, 24 mmHg, 26 mmHg, 28 mmHg, and 30 mmHg) using a pressure biofeedback unit, according to three different eyedirections (i.e., 0°, 20°, and 40°). Muscle thickness of sternocleidomastoid muscle and deep cervical flexor muscles was measured accordingto pressure levels and eye directions using ultrasonography. Results: In results of muscle thickness in sternocleidomastoid muscle and deep cervical flexor muscles, the thickness of those muscles wasgradually increased compared to the baseline pressure level (22 mmHg), as levels in the pressure biofeedback unit during cranial-cervical flexionexercise were increasing. In addition, at the same pressure levels, muscle thickness was increased depending on ascending eye direction. Conclusion: Our findings showed that muscle thickness of sternocleidomastoid muscle and deep cervical flexor muscles was generally increasedduring cranial-cervical flexion exercise, according to increase of eye directions and pressure levels. Therefore, we suggested thatlower eye direction could induce more effective muscle activity than the upper eye direction in the same environment during cranial-cervicalflexion exercise.

공간직물형 에어 인솔의 공기압 차이가 젊은 성인의 균형 능력에 미치는 영향

김기철,이전형,김상수,남휴형,Kim, Gi-Chul,Lee, Jeon-Hyeong,Kim, Sang-Su,Nam, Hue-Hyeong 대한고유수용성신경근촉진법학회 2015 PNF and Movement Vol.13 No.1

Purpose: This study examined the effects of space fabric type air insole pressure differences on young adults' dynamic balance ability. Method: The subjects of this study were 17 young female adults without musculoskeletal system disease. Balance ability was measured by dividing the subjects into three groups: an experimental group which did not wear an air insole (insole-off group), an experimental group which wore an air insole to which air pressure of $0.55kg/cm^2$ was applied (insole-0.55 group), and an experimental group which wore an air insole to which air pressure of $0.75kg/cm^2$ was applied (insole-0.75 group). For dynamic balance, the subjects stood on a balance pad, and perimeter length and medium speed were measured three times. The averaged values were recorded and statistically processed. Result: There were significant differences in average speed, and the insole-0.75 group's average speed decreased compared to the insole-off group and the insole-0.55 group. Although the total movement distance did not statistically differ, the insole-75 group's movement distance decreased compared to the insole-off group and the insole-0.55 group. Conclusion: Application of a space fabric type air insole, in particular insole-0.75, was helpful in improving balance ability. This is considered to occur because the space fabric structure was conducive to decreasing sway and producing balance.

일부 경도지적장애인의 이점식별 능력에 관한 연구

송현남,이전형,김경 한국장애인고용공단 고용개발원 2010 장애와 고용 Vol.20 No.1

본 연구의 목적은 이점식별(two-point discrimination) 검사를 통해 경도지적장애인과 일반인의 이점식별 능력 비교를 통하여 직업재활과 인지운동치료 등의 재활치료로의 접근에 있어임상적 기초 자료를 마련하고자 하였다. 본 연구는 경도지적장애인 20명과 일반인 20명이 참여했다. 이점식별 측정 도구(Three-Point Aesthesiometer, Lafayette, 미국)를 이용하여 손바닥, 손등, 하퇴부에 오름차순으로 측정한 후, 다시 내림차순으로 동일한 부위를 측정하였다. 손바닥, 손등, 하퇴부위에서 이점식별능력을 비교한 결과, 통계적으로 유의미한 수준의 차이는 없었으며(p 〉.05), 두 집단 모두 손바닥, 손등, 하퇴부의 순으로 민감도가 낮아지는 것으로 나타났다. 본 연구 결과, 경도지적장애인들은 일반인들과 유사한 정도의 이점식별 능력을 가지고 있는바 직업재활과 재활치료의 접근에 있어 이점식별 능력을 향상시키기 위한 별도의 훈련이나 치료는 필요치 않을 것으로 예측되었다.