Elector Spinae Research Articles

Biceps Femoris Muscle is Activated by Performing Nordic Hamstring Exercise at a Shallow Knee Flexion Angle.

The semitendinosus (ST) muscle is primarily used during Nordic hamstring exercise (NHE), which is often prescribed for preventing hamstring injury, though the biceps femoris long head (BFlh) muscle that is more susceptible to injuries. Thus, this study aimed to identify the modulation of BFlh muscle activity with different knee flexion angles during NHE using an inclined platform. Fourteen male athletes performed NHE and maintained their position at maximum inclination (NH). Subjects also performed isometric NHE using a platform inclined to 50° (ICL) and 40° (ICH), and the knee flexion angle was controlled to 50° and 30°. The electromyography (EMG) activity of the BFlh, ST, semimembranosus, gluteus maximus, elector spinae, and rectus abdominus muscles was determined during each exercise. The EMG of the ST was higher than that of the BFlh during NHE and the highest of all muscles in all exercises (p < 0.05). Moreover, the activity of the BFlh tended to be higher than that of the ST for ICH than for ICL, regardless of the knee joint angle. The activity of the BFlh becomes equivalent to that of the ST during NHE at a knee flexion angle of less than 50°. These results indicate that performing NHE at a shallow knee flexion angle will enhance the activity of the BFlh muscle.

Effects of Various Deadlifts on the Muscle Activity of the Trunk and Lower Extremity

Background/Objectives: The purpose of this study is to identify changes in the muscle activity of the trunk and lower extremity during deadlift with various equipments (Kettlebell, Barbell, and Trap bar).Method/Statistical Analysis: 29 people were selected to measure the muscle activity of the elector spinae, gluteus maximus, rectus femoris and rectus abdominis. One-way ANOVA with repeated measurements was conducted to determine the difference in muscle activity in various deadlift. The Bonferroni correction was used as a post-test to check the difference in muscle activity between the variousinterventions, and the significance level was set to 0.05. Statistical programs used SPSS Version 22.0 (Statistics Package for the Social Science).Findings: There were significant differences in elector spinae, gluteus maximus,and rectus during the various deadlift.The rectus femoris showed higher muscle activity in trapbar deadlift than barbell deadlift and kettlebell deadlift. The elector spinae showed higher muscle activity barbell deadlift than kettlebell deadlift. The gluteus maximus showed higher muscle activity in barbell deadlift and kettlebell deadlift than deadlift.Improvements/Applications: This study suggests thatmuscle activity vary depending on the barbell during deadlift.

The Effects of Transcranial Direct Current Stimulation Combined Lumbar Stability Exercise on the Muscle Activity and Jump Performance of the Soccer Player

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 effects of abdominal drawing-in maneuver during stair climbing on muscle activities of the trunk and legs.

The purpose of this study was to investigate effects of abdominal drawing-in maneuver (ADIM) on the muscular activity of the trunk and the lower limbs during stair ascent. The subjects were healthy 15 men and 8 women who were in their 20s. After maintaining ADIM by using a pressure biofeedback unit for 15 min, the subjects performed stair ascent and their muscular activity of the right trunk and the legs was measured to determine difference between when the subjects maintained ADIM and did not. The activities of the sternocleidomastoid, the splenius capitis, the rectus abdominis (ABD), the external abdominal oblique (EO), the transverse abdominis (TRA), the elector spinae (ES), the vastus medialis (VM), and the vastus lateralis (VL) were measured using surface electromyogram (TM DTS). The collected data were statistically processed by the SPSS ver. 18.0 and analyzed with a paired t-test. The muscular activities of the TRA, VM, and VL significantly increased (P<0.05), while the activity of the ES significantly decreased (P<0.05) during stair ascent when the ADIM was maintained than when it was not. In conclusion, the stair ascent with ADIM maintained activated the abdominal muscles to control trunk balance and perform lumbar stability, simultaneously reducing excessive lumbar lordosis or pelvic anterior tilt which will help to improve the function of the musculoskeletal system.

The Effects of Lateral Shift Correction Squat on Muscle Activation and Dynamic Balance in Scoliosis

Background/Objectives: The purpose of this study was to effects of the muscle activity of elector spinae and gluteus maximus and dynamic balance ability during lateral shift correction squat in scoliosis.Method/Statistical Analysis: The subjects of this study were 17 female and 11 male who has scoliosis were recruited. Surface electromyography data were collected from the both of electer spinae(T6 and L3) and gluteus maximus. Dynamic balance was collected from bio-resque device. A Paired t - test was performed to examine the effect of both of elector spinae(T6 and L3) and gluteus maximus muscle activity and dynamic balance during lateral shift correction squat.Findings: The results of this study show that the trunk lateral shift correction squat increased ratio of elector spinae(T6 and L3) and gluteus maximus compared with general squat. Also dynamic balance ability was increased during lateral shift correction squat compared with general squat.Improvements/Applications: This study suggests that lateral shift squat maybe useful in subject with scoliosis.

A study on muscle activity based on the ankle posture for effective exercise with indoor horse riding machine.

[Purpose] Although much researches have been conducted on the hippotherapy, the intervention methods of the previous studies focus on the pelvis posture. Thus, this study analyzed the electromyogram (EMG) of trunk muscle and lower limb muscle to analyze the kinetic factors. Based on the analysis, this study aims to compare the muscle load and suggest effective exercise method. [Participants and Methods] This study checked the muscle activity of Rectus abdominis (RA), Erector spinae (ES), Rectus femoris (RF), Adductor magnus (AM) during the exercise using horse riding machine in dorsiflexion position by bending 20 degrees and in neutral position. Each position was performed for 5 minutes and the speed of the horse riding machine was set to medium speed. [Results] Rectus abdominis showed higher muscle activity in dorsiflexion position and the groups had significant differences. Elector spinae showed higher muscle activity in dorsiflexion position and the groups had significant differences. Rectus femoris showed higher muscle activity in dorsiflexion position and the groups had significant differences. Adductor magnus also showed higher muscle activity in dorsiflexion position and the groups had significant differences. [Conclusions] The study result showed that exercise with horse riding machine in dorsiflexion position activates trunk muscle and thigh muscle effectively. Thus, the study suggests more effective posture for the modern people who exercise with horse riding machine for strengthening physical health.

The Effects of Lateral Shift Correction Squat on Muscle Activation and Dynamic Balance in Scoliosis

Background/Objectives: The purpose of this study was to effects of the muscle activity of elector spinae and gluteus maximus and dynamic balance ability during lateral shift correction squat in scoliosis.Method/Statistical Analysis: The subjects of this study were 17 female and 11 male who has scoliosis were recruited. Surface electromyography data were collected from the both of electer spinae(T6 and L3) and gluteus maximus. Dynamic balance was collected from bio-resque device. A Paired t - test was performed to examine the effect of both of elector spinae(T6 and L3) and gluteus maximus muscle activity and dynamic balance during lateral shift correction squat.Findings: The results of this study show that the trunk lateral shift correction squat increased ratio of elector spinae(T6 and L3) and gluteus maximus compared with general squat. Also dynamic balance ability was increased during lateral shift correction squat compared with general squat.Improvements/Applications: This study suggests that lateral shift squat maybe useful in subject with scoliosis.

The Effect of Paravertebral Muscle on the Maintenance of Upright Posture in Patients With Adult Spinal Deformity

ObjectiveWe investigated the relationship between cross-sectional area (CSA) of paravertebral muscle and trunk tilt at standing and walking in adult spinal deformity (ASD) surgery. Summary of Background DataAlthough the importance of back muscles for the development of spinal kyphosis was well described, the influence on maintaining the sagittal balance was unclear. MethodsForty-five female patients (mean age, 68.8 years) with ASD were studied. We measured sagittal vertical axis [SVA], pelvic tilt [PT], and pelvic incidence–lumbar lordosis [PI-LL]) by lateral spine radiograph. For the assessment of trunk tilt standing-trunk tilt angle (STA) by lateral standing radiograph, gait-trunk tilt angle (GTA) by lateral gait images, and the increasing trunk tilt angle (ITA) by subtracting the STA from the GTA were calculated. Using L1/2 and L4/5 axial MRI, the CSAs of bilateral multifidus muscles (MF) and elector spinae (ES) removed fat by Image J software were calculated. We examined the correlation between trunk tilt angle (STA, GTA, and ITA) and spinopelvic parameters (SVA, PT, and PI minus LL) and also the correlation among muscle CSA, trunk tilt angle (STA, GTA, and ITA), and Oswestry Disability Index (ODI). ResultsThe mean STA, GTA, and ITA were 4.2°, 13.0°, and 8.8°, respectively. The CSAs of back muscles were 278 mm2 at L1/2 MF, 1,687 mm2 at L1/2 ES, 636 mm2 at L4/5 MF, and 1,355 mm2 at L4/5 ES, respectively. Trunk tilt angle had significant relations with spinopelvic parameters. Concerning about muscle CSA, significant correlations were observed between STA and L4/5 MF (r = −0.517), GTA and L1/2 ES (r = −0.461) and L4/5 MF (r = −0.476), and ITA and L1/2 ES(r = −0.429). ODI showed significant correlation with STA and GTA. ConclusionsParavertebral muscles were crucial to keep upright posture during walking as well as standing.

Relationship between asymmetric trunk flexion movement and elector spinae muscle activity.

[Purpose] To clarify the relationship between asymmetric trunk flexion movement and erector spinae (ES) muscle activity using a three-dimensional motion analysis system and surface electromyography. [Subjects and Methods] The subjects comprised 14 healthy individuals. Angles of trunk flexion, rotation, and side bending were measured using a three-dimensional motion analysis system attached to the trunk and pelvic segment. Activities of the ES muscle on both sides at the L1 and L4 levels were measured using surface electromyography. [Results] In healthy individuals, the ES was more markedly activated in the trunk extension phase than in the trunk flexion phase. There was no significant difference in terms of the extent of trunk rotation and trunk side bending during these tasks. [Conclusion] This study did not clarify the relationship between asymmetric movement during trunk flexion and ES activity.

The Effect of the Period Wearing High-heeled Shoes on Muscle Activity of Lower Extremity During Walking

본 연구는 하이힐을 신은 기간이 하지 근 활성화에 미치는 영향을 알아보기 위해 수행되었다. 대상자는 항공서비스학과에 재학 중인 여학생 34명이었으며 2그룹으로 분류되었다 : 대조군 - 16명으로 하이힐을 한 번도 신지 않은 자, 실험군 - 18명으로 하이힐을 1년간 꾸준히 신은 자. 근 활성화는 EMG를 사용하여 앞정강근, 장딴지근, 넙다리곧은근, 척추세움근에 패드를 붙이고 맨발로 걸을 때와 하이힐을 착용하고 걸을 때 측정되었다. 연구결과, 평지 걷기에서는 대조군과 실험군 사이에 통계학적으로 유의한 차이가 없었다. 계단 오르기에서 하이힐을 신었을 때 앞정강근(p.05)과 장딴지근(p.001)에서 실험군에 비해 대조군에서 통계학적으로 유의하게 근 활성화가 증가하였다. 계단 내려오기에서 맨발일 때 척추세움근(p.05)에서 대조군에 비해 실험군에서 통계학적으로 유의하게 근 활성화가 증가하였다. 계단 내려오기에서 하이힐을 착용했을 때 앞정강근(p.01)과 장딴지근(p.05)에서 실험군에 비해 대조군에서 통계학적으로 유의하게 근 활성화가 증가하였다. 본 연구의 결과를 통해 하이힐을 처음 신는 경우가 하이힐을 1년 동안 신은 경우보다 보행 시 하지 근 활성화에 영향을 미친다는 것을 알 수 있었다.

골반압박벨트가 뭇갈래근과 척추세움근의 근두께에 융합적으로 미치는 영향

본 연구는 초음파 영상(ultrasound imaging)을 이용하여 네발기기 자세(quadruped position)에서 골반압박벨트(pelvic compression belt)가 뭇갈래근과 척추세움근의 근두께에 융합적으로 미치는 영향을 알아보기 위해 실시되었다. 대상자는 30명의 남자대학생으로 실험에 자발적으로 참여한 자로 선정하였다. 골반압박벨트를 위앞엉덩뼈가시아래(anterior superior iliac spines)에 착용한 상태와 착용하지 않은 상태에서 네발기기 자세를 실시하였고, 초음파영상 진단장치를 이용하여 근 두께를 측정하였다. 자료분석은 반복측정분산분석을 이용하였다. 연구결과, 뭇갈래근의 경우 골반압박벨트를 착용하였을 때가 착용하지 않았을 때보다 근두께가 유의하게 증가하였고(p<.05), 척추세움근의 경우도 골반압박벨트를 착용하였을 때가 착용하지 않았을 때보다 근두께가 유의하게 증가하였다(p<.05). 따라서 본 연구결과를 통해 골반압박벨트의 착용이 요통환자에게 효과적이며, 임상에서 다양한 네발기기 자세운동의 처방과 적용 시에 유용한 자료로 활용하고자 한다. The purpose of this study was to determine the effectiveness of the pelvic compression belt on the thickness of the erector spinae and multifidus during hip extension on quadruped position. Thirty male university students volunteered to participate in this study. The pelvic compression belt was positioned below the anterior superior iliac spines with the stabilizing pressure using elastic compression bands. Subjects were instructed to perform hip extension in quadruped position with and without applying the pelvic compression belt. The thickness of the erector spinae and multifidus was measured ultrasound during prone position, quadruped position without applying pelvic compression belt and quadruped position applying pelvic compression belt. Data were analyzed using repeated ANOVA. Muscle thickness of multifidus was significantly higher applying the pelvic compression belt than without applying the pelvic compression belt (p<.05). Muscle thickness of elector spinae was significantly higher applying the pelvic compression belt than without applying the pelvic compression belt (p<.05). Therefore, the research can contribute to the prescription and application of quadruped position exercises in clinical practices.

인도포장 공사의 자재배치 변화에 따른 근활성량 분석

본 연구는 건설노무자의 근골격계질환을 예방하기 위해 인도포장 공사에서 자재위치의 변화에 따라 작업자의 근활성량을 측정하고 분석하는 것을 목표로 한다. 실험방법은 다음과 같다. 피실험자는 미리 제작된 가상의 작업공간에 쪼그린 자세로 다섯 장의 시멘트 블록을 한 장씩 틀 안에 정해진 위치에 차례대로 설치한다. 자재의 위치는 틀밖에 좌측, 중간, 우측에 배치한다. 측정근육은 다리부위의 대퇴직근(Rectus femoris), 팔부위의 상완요골근(Brachioradialis), 어깨부위의 승모근(Upper trapezius), 그리고 허리부위의 척추기립근(Elector spinae)을 선정하였다. 실험결과는 다음과 같다. 우측 대퇴직근(R)과 좌/우 상완요골근(L/R) 그리고 좌측 척추기립근(L)의 작업부담을 경감할 수 있는 자재위치는 통계적으로 좌측(M1)이 적합한 것으로 판단된다. 우측 승모근의 경우, 자재를 좌측(M1) 혹은 중간(M2)에 배치하는 것이 적합한 것으로 판단된다. The study aims to measure and analyze changes in the amount of muscle activity of the workers in the footpath pavement construction in accordance with the change of the material arrangement to prevent musculoskeletal disorders of the construction laborers. Experiment methods are as follows. Subjects may install five cement blocks one by one with a squatted posture on a pre-built virtual workspace. The material positions are planned to be placed in the left (M1), middle (M2), and right (M3) outside the workspace. The rectus femoris of the leg portion, brachioradialis of the arm portion, the upper trapezius of the shoulder, and elector spinae of the waist are selected to measure the muscle activity. The experimental results are summarized as follows. The material position that may alleviate the physical workload in the right rectus femoris, the left and right brachioradialis, and left elector spinae is determined to be the left side (M1). For the right upper trapezius, it is determined that it is appropriate to place the material on the left side (M1) or the middle (M2).

The effects of the angles of the knee and heel-off on the muscle activity during a bridge exercise

PURPOSE: The purpose of this study is to investigate the effects of the angles of the knee and heel-off on the muscle activity during a bridge exercise. METHODS: 15 healthy adult men and women with the balance ability and joint working range required for performing a bridge exercise participated in this study, in which 120°, 90° and 60° angles of the knee-flexion and heel-off were applied during the bridge exercise. RESULTS: Our data showed that there were significant differences in muscle activities of elector spinae and rectus abdominis when 120°and 60°angles of the knee were applied, of internal oblique when 120°and 60°were applied, and external oblique when 90°and 60°were applied. When heel-off was applied, there were significant differences in muscle activities of elector spinae and rectus abdominis when 120°and 60°were applied, of internal oblique when 120°and 60°were applied, and external oblique when 90°and 60°were applied. CONCLUSION: In this study on an application of heel-off to the bridge exercise, we showed that the effect of †Corresponding Author: ptlsk@deu.ac.kr This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. the angles of the knee on the muscle activities of elector spinae, rectus abdominis, internal oblique and external oblique were all similar to the regular bridge exercise, but overall muscle activities were increased with heel-off when compared with the regular bridge exercise.

Effects of trunk deep muscle strength exercise in flexion-relaxation phenomenon of erector spinae muscles

Background: The flexion-relaxation phenomenon (FRP) of the erector spinae muscles has been used to discriminate low back pain patients. When people have performed the asymmetric lumbar flexion in the sagittal plane, the electromyography shows the asymmetric FRP. Although most healthy people have no low back pain, they have the potential factor for asymmetry of the FRP in the right and left ES muscles due to repetitive movement and poor posture in their work environments or daily activities. Lumbar stabilization exercises, especially the back bridge and hand-knee position, are the most common and effective to strengthen the lumbar deep muscle. Lumbar stabilization exercises provide a reappearance of FRP through strengthening the multifidus muscle, and eventually this could result in symmetry of FRP in non-LBP subjectswith asymmetric FRPof the ESmuscles. Purpose: This study evaluated the differences in the FRP of the right and left erector spinae muscles in asymptomatic subjects and the effect of lumbar stabilization exercises on these differences. Methods: Participants (n= 26, 12 exercise group and 14 control group)with a difference in the FRP in the right and left erector spinae muscles were recruited from healthy students attending Silla University. The exercise group performed two lumbar stabilization exercises (back bridge exercise and hand-knee exercise) for 4 weeks. A surface electromyography was recorded from the right and left erector spinae muscles at the third lumbar vertebral level. The collected electromyography signals were processed with a root-meansquare moving average of 300ms duration of EMG data. The relaxation time was defined as when ES activation decreased two standard deviation (SD) of silence activation in the fullflexed lumbar phase. Repeated two-way analysis of variance with between-(exercise and control group) and within-(preand post-exercise) subject factor analysis was used to assess the statistical significance of the FRP in the elector spinae muscles. Results: No significant difference for group by exercise interactions was found (p> .05). The right and left erector spinae muscles did show a difference in FRP for the control and exercise groups (119.2± 69.2ms and 131.1± 85.2ms, respectively, p> .05). In addition, the exercise group showed a significant decrease in post-exercise (50.0± 27.0ms) compared to pre-exercise (112.3± 41.5ms) differences in the right and left FRP (p< .05). Conclusion(s): These results suggested that lumbar stabilization exercises could counter asymmetry of the FRP in the erector spinae muscles to prevent low back pain in the general population. Implications: The result shows that healthy people who have no back pain, they have potential risk factor the asymmetric FRP. Therefore, asymmetric FRP is a new approach to the method of prevention for LBP.

Postural control during transient floor translation while standing with the leg and trunk fixed

Postural movement was restricted above the ankle, and contingent negative variation (CNV) and postural muscle activity were investigated during a transient floor translation (S2) 2s after an auditory warning signal (S1). For 13 healthy young adults, the joints of the knee, hip, and trunk were fixed using a cast brace. Under no-fixation and fixation, a set of 10 translations was repeated at least 4 times, and center of pressure in the anteroposterior direction (CoPap), posterior postural muscle activity of the body (elector spinae (ES), biceps femoris (BF), gastrocnemius (GcM) and soleus (Sol)), and late CNV at Cz were analyzed in the initial two sets (initial set) and last two sets (late set). In the no-fixation, CoPap forward displacement after S2 gradually decreased. In the first trial of the fixation, it had significantly increased, and then rapidly decreased across subsequent trials. CNV peak amplitude was largest in the late set of the fixation. The activity of postural muscles increased just before S2 and in the late set the start time showed high correlations with CNV peak time in all muscles (ES (r=0.88), BF (0.92), GcM (0.80), and Sol (0.89)) under the no-fixation, but exclusively in the GcM (0.84) and Sol (0.88) under the fixation. When postural control was restricted mainly to the ankle, attention would have been focused mainly on processing sensory information from the triceps surae just before the floor translation.

Effects of external pelvic compression on trunk and hip muscle EMG activity during prone hip extension in females with chronic low back pain

Many studies have reported higher trunk and hip muscle activity in patients with chronic low back pain (CLBP). Increased trunk and hip muscle activity could contribute to pain. Previous studies have shown that external pelvic compression (EPC) decreased back and hip muscle activity during physical tasks.In this study, we assessed the effects of EPC on the electromyography (EMG) activity of the latissimus dorsi (LD), elector spinae (ES), gluteus maximus (GM), and biceps femoris (BF) in a CLBP group and a healthy group during prone hip extension (PHE).Forty female volunteers (20 non-specific CLBP, 20 healthy) were recruited. Surface EMG data were collected from the LD, ES, GM, and BF muscles during a PHE task. Normalized EMG values were analyzed by separate repeated-measures analysis of variance (ANOVA) for each muscle.The normalized EMG activity in the left LD, bilateral ES, and right GM was significantly higher in the CLBP group than in the healthy group during PHE. In the CLBP group, the normalized EMG activity in the left LD, bilateral ES, and right GM was significantly lower with EPC than without (p < 0.05). This suggests that the application of EPC decreased trunk and hip extensor EMG activity in the CLBP group during PHE.

Effects of Pelvic Belt on Hip Extensor Muscle EMG Activity during Prone Hip Extension in Females with Chronic Low Back Pain.

[Purpose] This study assessed the effects of a pelvic belt (PB) on the electromyography (EMG) activity of the elector spinae (ES), gluteus maximus (GM), and biceps femoris (BF) in females with chronic low back pain (CLBP) during prone hip extension (PHE). [Subjects] Twenty female with CLBP were recruited. Surface EMG data were collected from the ES, GM, and BF muscles during a PHE task. [Results] The EMG activity in the ES bilaterally, and the right GM decreased significantly when a PB was applied compared with when a PB was not applied. [Conclusion] This suggests that a PB is effective for altering the activation pattern of the hip extensor muscles in females with CLBP during PHE.

Patients With Low Back Pain Demonstrate Increased Activity of the Posterior Oblique Sling Muscle During Prone Hip Extension

To examine activation patterns of the myofascial chain in women experiencing chronic low back pain (CLBP) and women without CLBP during a prone hip extension (PHE) test. Cross-sectional. Clinical research laboratory. Fifteen women experiencing CLBP and 15 women without CLBP. Surface electromyographic recordings from the posterior oblique sling during PHE. Two-sample t-tests were used to compare demographic information and electromyographic signal amplitude of the posterior oblique sling between groups. Women with CLBP exhibited significantly increased normalized electromyographic signal amplitudes in the contralateral latissimus dorsi (P= .01), contralateral elector spinae (P< .01), ipsilateral elector spinae (P< .01), ipsilateral gluteus maximus (P= .03), and ipsilateral biceps femoris (P= .02) compared with women without CLBP. Women with CLBP had greater activity in the posterior oblique sling muscles than did women without CLBP during PHE. These findings suggest that an alteration can be made in posterior oblique sling muscle activities during PHE in women with CLBP.

경직성 양하지 마비아의 5가지 치료적 운동시 핵심 안정성과 관련된 근활동 비교 분석

PURPOSE: This study aimed to investigate muscles activation relate to core stability during 5 therapeutic exercise in children with spastic diplegia. METHODS: The subjects of this study were 8 children with typical development and 12 children with spastic diplegia who have been treated in Bobath children's hospital, all of whom agreed to participate in the study. All subjects were measured to see their muscles activation of rectus abdominalis, external oblique abdominalis, elector spinae, gluteus maximus, rectus femoris, and semitendinosus with surface EMG. RESULTS: The results of this study were as follows : 1) There were statistically significant difference in the root mean square(RMS) of all muscles according to 5 therapeutic exercise in children with spastic diplegia. 2) There were statistically significant difference in the RMS of all muscles according to 5 therapeutic exercise in children with typical development. 3) Significant differences of the RMS between diplegic children and normal children were found in elector spinae and rectus femoris only curl-up exercise. CONCLUSION: As the above results, we suggest that 5 therapeutic exercises could be used for a core stability or core strengthening program. Depending on the individual needs of children with cerebral palsy, some of exercises may be more beneficial than others for achieving strength.

수직점프 시 스포츠 테이핑이 하지의 운동학적 변인에 미치는 영향

The purpose of this study was to evaluate the effect of taping-tape with or without using spiral taping on vertical jump. The subjects for this study were about 20 years old healthy male college students without muscloskeletal diseases. Data for EMG activity and Ground Reaction Force(GRF) were estimated at three knee angles(i.e., 45, 90 & full degree). As a result, there was no statistical significance in max GRF at 90 and full degree regardless of spiral taping-tape. On the other hand, statistical significance was found when vertically jumping at 45 degree knee angle(p<.05). All the data for EMG activity at the three knee angles were not statistically significant, but there was a trend for a decrease in average EMG activity in elector spinae & Medial gastrocnemius at 90 degree knee angle. Based on these data, initial flexor action of knee was stabilized with spiral taping-tape when vertically jumping, resulting in improved muscular activity in Medial gastrocnemius. In conclusion, taping technique for jumping ability associated muscles like quadriceps is also required to develop.