Earticle

Purpose: The purpose of this study was to investigate the effects of muscle activity and muscle strength according to verbal command volume during isokinetic and isometric quadricep exercises. Methods: To measure muscle activity and muscle strength, surface electrodes were attached to the participants, as they sat on a Biodex chair. The isometric exercise was performed three times, with maximum exercise at 30° bending angle, based on a maximum extension state of the knee at 0°. The average holding time was unified to three seconds. In addition, the isokinetic exercise was performed three times, at 60°/sec. The verbal command ranged between 0∽60 dB and 0∽75 dB. Muscle activity was measured using surface electromyography (4D-MT, Relive, Gimhae, Korea). The Biodex System 4 was used to measure the isometric and isokinetic strength of the nodal line, and 4D-MT was used to measure muscle activity. Results: There were significant improvements in the maximal and relative muscle strengths, when the 0∽ 60 dB and 0∽75 dB verbal commands were applied with isokinetic extension/flexion (p<.05). The isokinetic exercise (0∽75 dB) group showed a significant difference in the vastus medialis oblique muscle activity change (p<.05), while the isometric exercise (0∽75 dB) group showed a significant difference in the rectus femoris muscle activity change (p<.05). Conclusions: Our results reveal that verbal commands effectively improve muscle activity and muscle strength during isokinetic and isometric quadricep exercises.

Purpose: This study aimed to understand the effects of biofeedback respiratory training on lung function, respiratory muscle activity, and gait in older individuals and to explore the effectiveness of new experimental methods. Methods: Thirty older individuals aged 65 years and older with normal cognitive function who actively cooperated during training were selected from a senior citizen center in Jeollanam-do. The study participants were randomly divided into control and experimental groups with 15 participants in each group. Based on the literature and previous research, an intervention plan was developed to conduct a 6-week respiratory exercise program and biofeedback respiratory training for older individuals. Respiratory muscle activity and gait were compared between the groups after the 6-week experiment. Results: Comparing the changes in respiratory muscle activity before and after the intervention, the experimental group showed a significant increase in the activity of the sternocleidomastoid, intercostal external, and rectus abdominis muscles, compared with the control group (p<.05)(p<.001). Comparing the changes in gait before and after overload, the experimental group showed a significant increase in steps per minute, walking speed, and stride length, compared with the control group, after the intervention (p<.05) (p<.001). Conclusion: Respiratory exercise intervention combined with biofeedback breathing training can help improve lung function, respiratory muscle activity, and gait in older individuals and is expected to become a new method of daily exercise for older individuals to improve their quality of life.

본 연구에서는 하지 골절 후 회복기 환자에게 러시안전류 자극이 넙다리네갈래근의 근수행력과 활성도에 미치는 영향을 알아보기 위하여 실시하였다. 본 연구는 2013년 1월 9일에서 2013년 3월 16일까지 실시하였으며, 하 지 골절 후 회복기에 있는 환자 20명을 대상으로 실험을 실시하였다. 러시아 전류자극기의 큰 도자를 넙다리네갈래 근의 근위부에 위치하고, 작은 도자는 원위부에 부착시키고 한 주에 세 번, 6주 동안 적용하였다. 대상자의 넙다리네 갈래근의 근활성도를 측정하기 위해 근전도가 이용되었고, 근수행력을 측정하기 위해 등속성기기가 이용되었다. 연구 결과 기간별 넙다리네갈래근의 근수행력 차이는 러시안전류 치료 전과 비교하여 4주 후와 6주 후에서 유의한 근수 행력의 증가를 나타내었다. 또한 넙다리곧은근, 안쪽넓은근, 가쪽넓은근의 근활성도는 치료 전과 비교하여 4주 후와 6주에서 유의한 증가를 나타내었다. 이와 같은 결과는 러시안 전류가 하지 골절 등과 같은 문제로 인해 약화된 하지 근육의 근력 강화를 위해 선택될 수 있는 효과적 치료 방법이라 할 수 있다.

The present study was aimed to comprehend the effect of the Russian current stimulation on the muscular performance and activity of quadriceps femoris muscle of the convalescent patient after the leg fracture .This study conducted test based on 20 patients after leg fracture. Russian current was applied for six weeks as three times in a week, between January 9, 2013 and 15 March 16, 2013. The electromyogram was used to measure the muscle activity of the quadriceps femoris, and the isokinetic equipment was used to measure the muscular performance.The muscular performance difference by duration depending on the application of the Russian current showed the significant increase in all muscular performances. The activity of all muscles of the quadriceps femoris muscle by duration showed significant increase. These results showed that the Russian current can be the effective treatment method for enhancing the muscular strength of the weakened lower limbs muscle due to the problem such as the leg fracture.

Purpose: This study is to see if the calf muscle movement affects the length of stride, symmetry, and ability to overcome obstacles, and muscle activity in patients with hemiplegia. Methods: Electromagnetic signals were first measured by ankle plantar flexion or muscle testing in a supine position with 12 patient ankle plantar flexor in the standing position. In the second measurement, the length and symmetry of stride are measured through the gait analyzer. In the third measurement, the ability to measure obstacles was measured. The paired- T test revealed a significant difference. Results: After the intervention, the step length was significantly decreased (p<.05), while the speed and failure rate of the obstacle overcoming was significantly decreased (p<.05). also muscle actvitiy was significantly increased (p<.05), and muscle power was significantly increased (p<.05). the different was statistically significant between pre- and post-intervetion. but after intervention, the gait symmetry was no significantly difference (p>.05), between pre- and post-intervention. Conclusion: The results of this study show that the length of stride, ability to overcome obstacles, muscular activity, and muscle strength are increased more after exercise. Therefore, it is a movement that requires patients with hemiplegia to aim for calf muscle exercise because it increases the length of step in their daily lives, overcomes obstacles, and has a positive effect on muscle activity and muscle strength.

Purpose: This study aimed to investigate the effect of ergometer exercise after performing static stretching and strength exercise on the activity of the quadriceps muscle. In general, the effects of performing both the strength and stretching exercises before ergometer exercises were examined. Methods: The participants were divided into two exercise groups and performed static stretching and strength exercises and then ergometer exercise. Each exercise was performed for 4 weeks, three times a week, by each group to measure changes in the muscle activities of the rectus femoris, vastus lateralis, and vastus medialis. Measurements were made at weeks 0 and 4, and electromyography was used in a static posture. Results: Both the stretching and strength exercise groups showed significant increases in the rectus femoris, vastus lateralis, vastus medialis muscle activities after exercise. Conclusion: Stretching and strength exercises before ergometer exercise helps to increase muscle activities. Stretching is thought to be more effective for gaining muscle activity than muscle strength. However, no significant difference was found between the two groups.

The present study examined muscle activity in response to backward perturbation in patients with clinical vertebral compression fracture (CVCF). The subjects were 32 patients aged 65 years and above con-sisting of 16 each with (CVCF group) and without (control group) CVCF. The time to peak activity, and time of onset of muscle activity of the an-terior tibial, vastus medialis, and rectus abdominis muscles when unex-pected backward perturbation was applied were evaluated by surface electromyography. The strength of perturbation was 4% or 6% of the subject’s body weight. In addition, the presence of the stepping reaction to perturbation, severity of low back pain, and vertebral alignment were evaluated. Each item was compared between the two groups. In the CVCF group, kyphosis and severity of low back pain were significantly more severe, the time to peak activity of the anterior tibial muscle after the application of perturbation at 6% of the body weight was signifi-cantly shorter, and the time of onset of activity of the rectus abdominis muscle was significantly delayed. This suggests that the time to peak activity of the anterior tibial muscle is shortened and the time of onset of activity of the rectus abdominis muscle is delayed in unexpected backward perturbation in patients with CVCF.

The purpose of this study was to investigate whether pelvic stabilization affects multifidus (MF) and iliocostalis lumborum (IL) muscle activities during dynamic extension exercise. Nine males (age, 25.1±6.3 yr; height, 176.6±2.4 cm; body mass, 74.9±6.7 kg) performed an isometric lumbar extension strength test and dynamic exercise in an upright seat-ed position with or without pelvic stabilization. The electromyography and muscle strength of the MF and IL muscles were measured when the subjects performed the isometric lumbar extension strength test at the trunk angle 110˚, 146˚, and 182˚. In addition, the trunk extensor mus-cle activities were measured using 50% muscle strength of maximum isometric strength during a dynamic trunk extension exercise. The MF and IL muscle activities were significantly higher at 110°, 146°, and 182° with pelvic stabilization than that without pelvic stabilization during the isometric lumbar extension strength test (P<0.05) and the dynamic ex-ercise (P<0.05). These results suggest that the lumbar extension exer-cise with pelvic stabilization may be more effective for MF and IL mus-cle activity compared to that without pelvic stabilization.

Purpose: This study confirmed the effect of horseback riding, trotting, and walking on muscle activity on patients with and without chronic back pain. Methods: We analyzed 15 patients with chronic back pain with a score of 5 or higher and 15 patients with a score of 5 or less on the Korean version Oceanic Disability Index (K-ODI). For the analysis of muscle activity, electrodes were attached to the rectus abdominis, multifidus, rectus femoris, biceps femoris of both groups. Muscle activity during horseback riding, trotting, and walking were measured, and the result was calculated with MVIC%. Results: In the comparison of muscle activity during horseback riding and trotting in patients with chronic back pain, there were significant differences in the rectus abdominis, rectus femoris, and biceps femoris (p<.05). In the non-symptomatic group, there were significant differences in the multifidus and rectus femoris (p<.05). During horseback riding, trotting, and walking, all muscle activity was not statistically significant except for that of the biceps femoris and multifidus, but the muscle activity was low in the back pain group (p>.05). Conclusion: Equestrian exercise for patients with chronic back pain may be a therapeutic training program when comparing the muscle activity of those with and without chronic back pain while horseback riding, trotting, and walking.

The purpose of present study was to compare the tibialis anterior (TA), rectus femoris (RF), and erector spinae (ES) muscle activities at variety chair height during sit-to-stand (STS) on normal weight and obese sub-jects. Also, we compared the muscle activity difference between the normal weight and obese subjects. The study included 26 subjects (nor-mal weight 13 and obese 13). Each subject performed STS at three chair heights (40 cm, 50 cm, 60 cm) and TA, RF, and ES muscle activities measured. According to the results of the measurement, muscle activa-tion of TA showed significantly higher than RF and ES muscle activation during STS at all chair heights on obese subjects. The muscle activation of TA showed significantly higher than RF muscle activation during STS at all chair heights on normal weight subjects. The muscle activation of RF and ES showed significantly higher in normal weight subjects than obese subjects at 40 cm and 50 cm of chair heights. However, the TA muscle activation showed no significant difference between normal weight subjects and obese subjects. This study’s results suggested that obese subjects should practice the use of RF and ES muscles in a low-height chair during STS.

The purpose of this study was to investigate changes of gait pattern, muscle activity, and perceived comfort in response to variations of height-elevating insoles (HEIs) in young adults. The subjects of this study were 30 young adults who voluntarily consented to participate in this experiment after listening to its purpose and method. They were di-vided into 3 groups who wore HEIs height (0, 3, and 7 cm). Each group consisted of 10 young adults and wore the HEIs for 4 hr a day. Electro-myographic signals were collected from the tibialis anterior, the gas-trocnemius, the hamstring, and the right and the left erector spinae (ES) before and after walking with the HEI. Gait pattern was measured be-fore and after walking with the HEI. Perceived comfort was measured after a subject wore the insoles for 4 hr. The activities of ES showed significant differences among the three groups. The activity of the left ES was significantly different between groups 1 (0 cm) and 2 (3 cm) and groups 1 and 3 (7 cm). The activity of the right ES was significantly dif-ferent between groups 1 and 3. The left stride length and the left step length showed significant differences between groups 1 and 3. Per-ceived comfort was significantly different among the three groups. As the HEIs increased, the activities of ES were gradually increased and the left step length and stride were decreased. Using of higher HEIs over 4 hr may be occurred excessive activities of the ES, abnormal gait patterns, and perceived discomfort.

Purpose: This study aimed to investigate the effects of taping-assisted rhythmic stabilization exercises on shoulder muscle activity and function in patients with shoulder impingement syndrome. Methods: Twenty patients diagnosed with shoulder impingement syndrome were randomly assigned to experimental (n=10) or control (n=10) groups. The experimental group underwent rhythmic stabilization exercises combined with taping, while the control group underwent general physical therapy for 30 min per session, three times a week, for six weeks. Muscle activities of the upper trapezius (UT), lower trapezius (LT), and serratus anterior (SA) were measured using surface electromyography, and shoulder function was assessed using the Oxford Shoulder Score (OSS) before and after the intervention. Results: After the intervention, the experimental group demonstrated a significant increase in SA muscle activity and shoulder function compared with the control group (p<.05). Within-group analysis revealed significant improvements in SA activity and OSS only in the experimental group (p<.01), whereas no significant changes were observed in UT or LT muscle activity in either group. Conclusion: Taping-assisted rhythmic stabilization exercise was found to be an effective intervention for enhancing selective muscle activation and shoulder function in patients with shoulder impingement syndrome. This combined approach may serve as a valuable clinical rehabilitation strategy to improve shoulder stability and functional recovery.

본 연구에서는 뇌성경직양측마비 아동을 대상으로 융합적인 자세교정치료가 근강직도(muscle stiffness) 및 근활성 도(muscle activity)에 미치는 단기적인 영향을 알아보고자 하였다. 연구 대상자는 4세부터 7세의 뇌성경직양측마비 아동 3명(남자2, 여자1)을 대상으로 하였다. 측정부위는 위등세모근, 배곧은근, 큰볼기근이며, 근강직도 측정기(Myoton)와 표면 근전도(EMG)를 이용하여 근강직도와 근활성도를 측정하였으며, 양측 대칭성에 대해서도 알아보았다. 연구결과, 보상작용 이 심했던 아동들이 융합적 자세교정 치료 중재 후 전반적으로 위등세모근과 배곧은근에서 근강직도와 근활성도가 감소하 였고, 큰볼기근에서는 증가하는 경향을 보였다. 특히 해당 근육에서 왼쪽과 오른쪽의 대칭성이 줄어드는 특성을 보였다. 본 연구에서는 몇 가지 제한점에도 불구하고 융합적인 자세교정치료가 뇌성경직양측마비 아동의 자세교정 측면에서 긍정 적인 효과가 있음을 보여 주었다.

The aim of this study was to investigate the short-term effects of combined postural correction exercises (CPCE) on muscle stiffness and muscle activity in children with cerebral spastic diplegia(CSD). The subjects were 3 children (2 male and 1 female) with CSD from 4 to 7 years old. The measurement sites were upper trapezius muscle(UT), rectus abdominis muscle(RA), and gluteus maximus muscle(Gmax), muscle stiffness and muscle activity were measured using Myoton and surface EMG, and the symmetry of both sides was also examined. As a result, children with severe compensatory action showed decreased muscle stiffness and muscle activity in UT and RA and increase in Gmax after CPCE intervention. Especially, the left and right symmetry of the muscles was decreased. In this study, despite some limitations, CPCE have shown a positive effect in posture correction of children with CSD.

The purpose of this study was to examine the effects of core stability-en-hancing exercises on the lower trunk and muscle activity of stroke pa-tients. The control group (n=10) underwent standard exercise therapy, while the experiment group (n=10) underwent both the core stability-en-hancing exercise and standard exercise therapy simultaneously. The standard exercise therapy applied to the two groups included weight bearing and weight shifts and joint movements to improve flexibility and the range of motion. The core stability- enhancing exercise was per-formed 5 times a week for 30 min over a period of 4 weeks in the room where the patients were treated. For all 20 subject, the items measured before the exercise were measured after the therapeutic intervention, and changes in muscle activity of the lower trunk were evaluated. The activity and stability of the core muscles were measured using surface electromyography and the trunk impairment scale (TIS). The mean TIS score and muscle activity of the lower trunk increased in the experi-ment group significantly after performing the core stability-enhancing ex-ercise (P<0.05). The results of this study show that the core stability-en-hancing exercise is effective in improving muscle activity of the lower trunk, which is affected by hemiplegia.

Purpose: The purpose of this study is to find and compare the differences between muscle activity change and balance during unstable support and weight load during the squat exercise. Methods: The subjects were 36 normal adults (18 male and 18 female). It was randomly divided into a stable support group (control group), an unstable support group (experimental group 1), and an unstable support surface weighted group (experimental group 2), and the squat exercise was performed for 4 weeks. Togu jumper (TOGU, Germany) was applied as the unstable support surface, and 4 kg of Kettlebell (Schmidt, China) was applied for the weight load. The squat exercise was conducted three times a week and consisted of 10 minutes of warm-up, 20 minutes of the main exercise, and 10 minutes of down exercise. This exercise was repeated three sets of 15 squats. Results: The result is as follows. First, changes in muscle activity according to the experimental period increased in both the stable and unstable support groups and the unstable support and the largest increase in the weight load group (p<.05). Second, change in the balance ability according to the experiment period was most improved in the unstable support according to the experiment period in the change of Endpoint excursion (EPE) and the Directional control (DCL) than the other two groups (p<.05). Conclusion: Squat exercise is effective as an exercise to improve the strength and balance of leg muscles. As in previous studies, it was found that exercise is more effective on the unstable support than on the stable support and that it is most effective to give weight load on the unstable support.

The purpose of the present study is to evaluate the effects of isometric exercise types on low back pain (LBP) patients. Isometric exercise types were mat exercise and I-Zer exercise. Subjects were divided into 3 groups: LBP control group, LBP mat exercise group, and LBP I-Zer ex-ercise group in 23-25 aged men. Visual analogue scale (VAS) and elec-tromyography (EMG) were used to evaluate the degree of pain and the muscle activity in LBP patients. Root mean square (RMS), median fre-quency (MDF), and mean frequency (MNF) were checked by EMG pow-er spectrum analysis on longissimus thoracic (LT), iliocostalis lumborum (IL), mulitifidus (M), and rectus abdominis (RA). LBP mat exercise pro-gram and LBP I-Zer exercise program were conducted 5 sets once time, 3 times per week during 6 weeks. The two-way ANOVA with repeated measure was used to check the pain degree and muscle activity. The present results showed that muscle activity in the LBP I-Zer exercise group was increased compared to the LBP mat exercise group and LBP control group (P<0.05). LBP I-Zer exercise group and LBP mat exercise group showed increased mean frequency in LT, IL, M, and RA muscles than the LBP control group. Therefore, LBP patients performed isomet-ric exercise may have positive effect to reduce pain degree and to in-crease muscle activity. Especially, LBP I-Zer exercise type showed more effectiveness in reducing pain degree and enhancing muscle activity.

Purpose: The purpose of this study was to investigate the effects of physical exercise program implemented on unstable support surface on changes in lower limb muscle activity and gait speed in people with developmental disabilities. Methods: The study included 20 developmentally disabled people, randomly assigned to two groups: the control group and experimental group. The physical exercise program implemented on a stable support surface for control group and an unstable support surface for experimental group. An analysis of covariance (ANCOVA) was conducted to compare lower limb muscle activity and gait speed between the groups, revealing significant differences. Results: The muscle activity, there were statistically significant differences before and after the intervention in the anterior tibialis and soleus in both control group and experimental group(p<.05), and in rectus femoris and biceps femoris only in experimental group(p<.05). There were statistically significant differences between groups in rectus femoris (p<.05) and biceps femoris (p<.01). Second, the gait speed, there were statistically significant differences between groups (p<.05), and before and after the intervention only in experimental group(p<.05). Conclusion: Physical exercise programs using unstable support surface can be an effective intervention for improving lower extremity muscle activity and gait speed. These findings suggest that, in the future, this training can serve as an efficient physical exercise program for people with developmental disabilities.

Purpose: This study focuses on intervention of the sling exercise combined with transcranial direct current stimulation to examine its effect on trunk muscle activity and game performance ability of soccer players. Methods: The study included 30 college soccer players and divided them into a sling exercise group (Group Ⅰ), which combines transcranial direct current stimulation, and a general sling exercise group (Group Ⅱ). Fifteen subjects were randomly assigned to each group. After receiving general soccer training, the subjects participated in a sling exercise combined with transcranial direct current stimulation (Group Ⅰ), and a general sling exercise (Group Ⅱ) for 30 min twice a week for eight weeks. Prior to intervention, the trunk muscle activity of the body (erector spinae, rectus abdominis, external oblique abdominal muscle) and the ability to perform the game (30 m sprint test and t-test) were analyzed. Eight weeks after the intervention, the above items were equally re-measured and an inter-group analysis was implemented. Results: As a result of a comparative analysis of trunk muscle activity and game performance ability between the groups, the sling exercise group (Group Ⅰ), which combined transcranial direct current stimulation, represented a statistically significant difference in trunk muscle activity and game performance ability compared to the general sling exercise group (Group Ⅱ). Conclusion: We discovered that the sling exercise, which combines transcranial direct current stimulation, is effective in improving body muscle activity and game performance ability. The use of transcranial direct current stimulation will activate muscles and improve exercise ability, which can be applied in training in various ways.

Purpose: The study attempts to understand the effect of lumbar stability exercise of transcranial direct current stimulation on muscle activity and jump performance in soccer player. Methods: Transcranial direct current stimulation combined lumbar stability exercise have been implemented on 15 trainees and general lumbar stability exercise have been implemented on another 15 trainees for 30 minutes at 5 times per week during 8 weeks, and elector spinae, rectus abdominis, external abdominal obilique have been measured using to evaluate the muscle activity of the trunk. The counter movement jump, counter movement jump with arm swing have been measured using g-jump to measure the jump performance. Results: There was statistically meaningful difference on the elector spinae, rectus abdominis, external abdominal obilique in the muscle activity of the trunk and there was statistically meaningful difference on counter movement jump, counter movement jump with arm swing in the jump performance(p<.05). Conclusion: Based on above, it is realized that the transcranial direct current stimulation combined lumbar stability exercise is more effective than the general lumbar stability exercise on the improvement of the muscle activity of the trunk and the jump performance.

The purpose of this study was to investigate the change the muscle activity of the sternocleidomastoid and upper trapezius during a walking with the backpack of different weight. We recruited 20 healthy volunteers of male 11 and female 9. Backpack weight were prepared 10％, 15％ and 2 0％. the volunteers completed to walk at a speed of 4 ㎞/h on a treadmill for 1 min with the backpack of three different weight at three time. Surface electromyograms were recorded from sternocleidomastoid and upper trapezius for the change of muscle activity. EMG values were normalized by maximum muscle contractions (％maximum voluntary isometric contraction, MVIC). One-way repeated of ANOVA with post-hoc Bonferroni's correlation was used to compare activities according to the weight of backpack. Collected data were statistically analyzed by SPSS 19.0. The muscle activity of sternocleidomastoid muscle was significantly increased with backpack weight between 15％ and 20％(p<.05). The muscle activity of sternocleidomastoid muscle increased during walking with backpack weight between 10% and 15%. But there is no statistically difference( p>.05). The muscle activity of upper trapezius muscle was significantly decreased as backpack weight increases (p<.05). According to the results of this study, the muscle activity of neck flexor muscle was significantly increased as backpack weight increases. Therefore forward head posture is likely to be made by heavy backpack weight.

본 연구의 목적은 편평발을 가진 자를 대상으로 Low-dye 테이핑과 발 내재근육 강화 운동이 한 발 서기 동안 앞정강근, 장딴지근, 긴종아리근의 근육활성도에 미치는 영향을 알아보고자 실시하였다. 대상자는 편평발을 가진 20대 성 인 16명이며, Low-dye 테이핑(LTG; n=8) 및 발 내재근육 강화 운동(FSG; n=8) 그룹으로 나누었다. 각 그룹은 해당되는 중재를 주 2회 6주간 실시하였다. 앞정강근, 긴종아리근 및 안쪽 장딴지근의 근육 활성도를 측정하였다. 중재 전·후 근육활 성도의 변화를 비교하기 위하여 반복된 이원 배치 분산분석을 실시하였다. 근육활성도 측정 결과, LTG에서는 모든 근육에서 실험 전·후 사이에 유의하게 감소하였다(p<.05). FSG에서는 실험 전·후 사이에 앞정강근에서만 유의하게 감소하였다(p<.05). 따라서, Low-dye 테이핑과 발 내재근 육강화 운동은 편평발 환자에게 효율적인 하지 근육 활동에 도움이 될 것이다.

The purpose of this study was to investigate effect of low-dye taping and foot intrinsic muscle strengthening exercise on the muscle activity of the tibialis anterior, calf muscles, and long calf muscles during one-foot standing in subjects with flat feet. The subjects were 16 adults in their 20s with flat feet, and they were divided into low-dye taping (LTG; n=8) and foot intrinsic muscle strengthening exercise (FSG; n=8) groups. Each group underwent the appropriate intervention twice a week for 6 weeks. The muscle activity of the tibialis anterior, long calf muscle, and medial calf muscle was measured. Repeated two-way ANOVA was performed to compare changes in muscle activity before and after the intervention. As a result of muscle activity measurement, LTG significantly decreased between before and after the experiment in all muscles (p<.05). In FSG, only the tibialis anterior significantly decreased between before and after the experiment (p<.05). Therefore, low-dye taping and foot intrinsic muscle strengthening exercises will be helpful for efficient the lower extremity muscle activity of flat foot.