일상생활 중 실시간 되먹임을 동반한 의도적인 복근수축이 필라테스 참여자의 신체조성과 몸통 안정성에 미치는 영향

성재현,김창범 한국피부과학연구원 2018 아시안뷰티화장품학술지 Vol.16 No.1

Purpose: The purpose of this study was to provide pilates participants with realtime feedback about their intentional abdominal muscle contractions to enable them to practice these contractions in daily life. The study also investigated the effects of intentional abdominal muscle contraction accompanied by real-time feedback on body composition and trunk stability. Methods: Thirty-one pilates participants were divided into an experimental group (n=16) that was provided with real-time feedback and a control group (n=15) that did not receive feedback. Participants’ body composition and trunk stability were evaluated before and after the experiment. Both groups performed pilates exercises over an 8-week period. Only the experimental group was provided with real-time feedback on the changes to their waist circumference. Results: During body composition evaluation, the experimental group showed statistically significant declines in weight, body mass index, body fat percentage, and waist-hip ratio, whereas the control group exhibited no statistically significant differences in any of these variables. The experimental group experienced significantly larger declines in their body fat percentage and waist-hip ratio compared with the control group. On trunk stability evaluation, the experimental group showed statistically significant increases in trunk extension, trunk flexion, and the left side bridge after the experiment, whereas the control group exhibited a statistically signifiant increase only in the left side bridge. There were no statistically signifiant between-group differences for any of the variables. Conclusion: The experimental group, which performed intentional abdominal muscle contractions with real-time feedback, showed improved body composition and trunk stability, including improved body fat percentage and waist-hip ratio. These results indicate that providing intentional abdominal muscle contraction in addition to pilates exercises could provide both physical and cosmetic benefits, assisting practitioners in providing body shape and trunk stability improvements. 목적: 본 연구에서는 필라테스 운동 프로그램 참여자에게 의도적인 복근수축이 일상생활 중에도 가능하도록 실시간 되먹임을 제공하여 신체조성과 몸통 안정성에 미치는 영향을 알아보았다. 방법: 대상자는 필라테스 참여자 중 실시간 되먹임을 제공한 16명의 실험군과 되먹임이 없는 15명의 대조군으로 나누었다. 실험 전과 후 신체조성과 몸통 안정성 평가를 실시하였다. 실험군과 대조군 모두 8주간 필라테스에 참여하였고 실험군만 허리둘레변화 감지의 실시간 되먹임을 추가 제공하였다. 결과: 신체조성 평가에서 실험군은 실험 후 체중, 체질량지수, 체지방률, 복부지방률에서 유의한 감소를 보였으나 대조군은 실험 후 모든 항목에서 유의한 차이가없었다. 두 군간 비교에서 실험군이 대조군보다 체지방률과 복부지방률이 유의하게 감소되었다. 몸통 안정성 평가에서 실험군은 실험 후 몸통 신전, 몸통 굴곡, 좌측 사이드 브릿지에서 유의한 증가를 보였으며 대조군에서는 실험 후 좌측 사이드 브릿지에서 유의한 증가를 보였다. 두 군간의 비교에서 모든 항목이 유의한 차이가 없었다. 결론: 실시간 되먹임을 동반한 의도적인 복근수축을 제공받은 실험군에서 몸통의 안정성이 향상되었으며 체지방률, 복부지방률 등의 신체조성에 긍정적인 효과를 주었다. 필라테스 운동과 함께 일상생활 중 의도적인 복근수축을 실시하면 아름다운 몸매를 위한 미용적인 면과 몸통 안정성을 통한 건강적인 면 모두에효과적일 것이다

슬링 뉴렉 기법이 교각 운동 시 몸통 근육과 넙다리뒤근육의 근 활성도에 미치는 영향

하용목(Yong-Mok Ha),오재섭(Jae-Seop Oh),안덕현(Duk-Hyun An),김미현(Mi-Hyun Kim) 한국임상움직임치료학회 2021 한국임상움직임치료학회지 Vol.1 No.1

Background : Trunk stabilization exercises activate the stabilizing muscles of the trunk and essential for the correct function of the lumbo-pelvis. The bridge exercise increases the activity of the trunk stabilizing muscle, and is also used for the treatment of these muscles. Various studies related to sling exercise have been conducted, although none of them examined its effects on the muscle activity of trunk stabilizing muscles when the bridge exercise was performed by applying the sling neurac method. Objectives : The purpose of this study was to investigate which support surface the trunk and hamstring muscles high activity during bridge exercise using sling neurac method. Methods Seven teen healthy subjects, and the surface electromyography was attached to transverse abdominis, multifidi, and the dominant side hamstring muscles. Then, the maximum voluntary isometric contraction was measured. The bridge exercise was performed on either the floor, on a foam roller, and sling surface by randomly. A one-way repeated measures ANOVA was performed to determine the difference in muscle activity between the surfaces. Results : There was a significant difference in the activity of all muscles according to the difference in the supporting surface (p < 0.05). In the transverse abdominis, the sling surface showed significantly higher than the other support surfaces (p < 0.001). Conclusions : In this study, the more unstable the support surface, the highly muscle activity in all muscles. Especially, in the sling neurac method, a significant increase in the transverse abdominis muscle activity was observed compared to the other surfaces. These results suggest that exercise on a support surface applying the sling neurac method can simultaneously induce the contraction of the trunk stabilization muscles and hamstrings. Therefore, the bridge exercise using the sling neurac method proposed in this study is an effective way to strengthen the hamstring muscles while maintaining the stability of the trunk.

갑작스러운 체간 동요 시 좌우 체간근에 나타나는 불균형 패턴

김유신(Yu Shin Kim),편효영(Hyo Young Pyeon),윤범철(Bum Chul Yoon) 한국사회체육학회 2010 한국사회체육학회지 Vol.0 No.40

The purpose of this study was attempted to identify the pattern of left-right trunk muscles activity when subjects were occurred by sudden and unexpected trunk perturbation and to explore the effect of trunk stability. The study included 19 high school female basketball players whose dominated side is right. All subjects were postured such as a semiseated position on the apparatus which provides stable fixation of knee and hip. They exerted 30% of maximal isometric contraction in trunk flexion, left rotation and right rotation against resisted force from external load. The resisted force was suddenly released when electric current of an electromagnet turns off. At the same time, EMG(electromyography) signal from 4 trunk muscles(rectus abdominis, external oblique, internal oblique and L4-5 multifidus) and perturbation angle from 3D motion analysis system were recorded. The results were as follows: 1. Although left and right muscle activities were estimated imbalanced when subjects performed isometric contraction, the perturbation angles of sudden and unexpected perturbation of trunk weren`t significantly different(p>.05). 2. directional variations of perturbational angles on flexion-extension, left-right rotation and right-left rotation had the correlation significantly(p<.05). Especially, left-right rotation and right-left rotation had a high correlation(r=.778). 3. When subjects were occurred by sudden and unexpected perturbation, internal oblique muscle on left side had greater reflexive activities than right side regardless of directionality(p<.05). These results suggest that imbalance of trunk muscle contraction in the postural control of the one-side dominated person in the sudden and unexpected perturbation occurs regardless of directionality. It is maybe caused by not only long latency reflex from brain network rather than stretch reflex but also motor programs saved for anticipatory postural adjustments. And trunk perturbation angles are rarely affected imbalance level of left-right trunk muscle activities.

태권도 격파선수 수준에 따른 체간안정성과 무산소성파워의 차이

강병수,정재영 한국발육발달학회 2023 한국발육발달학회지 Vol.31 No.4

The purpose of the study was to classify the level of Taekwondo breaking players into national team selection players and breaking players majoring in college to verify the differences in factors of trunk stability and anaerobic power and to prepare for the national team through this study. I would like to present it as basic training material to the instructors, including the breaking players who are training. The research method was to classify 6 national team players and 6 general players as breaking players among athletes majoring in Taekwondo at university, check the activity of trunk stability muscles using centaur, and use ultrasound equipment to measure muscle thickness. Anaerobic power was examined separately in the upper and lower limbs. The SPSS 27.0 program was used to process the results, and comparisons were made using the Mann-Whitney U test, a non-parametric test. The statistical significance level was set at p<.05. As a result of this study, the first result of examining the muscle activity of trunk stability in eight directions showed no difference between the national Taekwondo breaking team and general athletes. As a result of checking the thickness of core strength related to trunk stability, there was no difference in the thickness of the core strength related to trunk stability. The national team players were found to be excellent. There was no significant difference in the upper extremity anaerobic power of the national team players who defeated the second Taekwondo player. In terms of lower extremity anaerobic power, the national team players were found to be significantly superior in peak power, average power, peak power per body weight, and average power per body weight.

코어 밸런스 트레이닝이 대학 남자 배구선수의 Trunk 등속성 근기능과 균형능력 및 자세 안정화에 미치는 영향

박정민(Park, Jeong-Min) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.3

This study aimed to provide fundamental data contributing to male college volleyball player trunk isokinetic muscular function and balance abilities and posture stability in male college volleyball player by core balance exercises on trunk isokinetic muscular function and balance abilities and posture stability. Twenty-two voluntary subjects (11 exercise, 11 non-exercise) with an understanding toward the aims of this study were selected and their trunk isokinetic muscular function and balance abilities and posture stability, before and after the core balance program, were measured. As for the trunk isokinetic muscular function, there were significant differences between pre- and post-values in the exercise group after completing the core balance exercises program. In the aspect of comparisons between post-values in both groups, there were significant improvements in only the exercise group. As for the static balance ability, there were significant differences between pre- and post-values in the exercise group. Meanwhile, in the aspect of comparisons between post-values in both groups, there were significant improvements in up(U), right(R), down(D), and left(L) of the exercise group. As for the posture stability, there were significant differences between pre- and post-values in the exercise group. Meanwhile, in the aspect of comparisons between post-values in both groups, there were significant improvements in of the exercise group. The study results indicate that the core balance exercise program is effective in improving the trunk isokinetic muscular function and balance abilities and posture stability of male college volleyball player.

Trunk Muscle Activation during Bridge Exercise with Various Shoulder Supporting Surfaces

( Ho Hee Son ) 대한물리의학회 2015 대한물리의학회지 Vol.10 No.3

PURPOSE: Bridge exercises are broadly used to develop trunk co-activation patterns that promote spine stability. This study was to analyze the trunk muscle activity during bridge exercise with various shoulder support surface(stable, sling, Swiss ball). METHODS: The subjects were 20 healthy subjects in their twenties. Subjects were performed bridge exercise on 4 different shoulder support surfaces using stable and labile instruments. 1) Bridge exercise on a stable surface. 2) Bridge exercise with their shoulder on a stable bench. 3) Bridge exercise with their shoulder on a sling. 4) Bridge exercise with their shoulder on a Swiss ball. Rectus abdominis, erector spinae, internal oblique, external oblique muscle activities were measured using electromyography. RESULTS: There were significant differences in RA, EO muscles between performing each of the 4 exercises(p<.05). RA and EO was recorded the highest activity during the bridge exercise with their shoulder on a sling. The lowest activity was recorded during conventional supine bridge on a stable surface. There were no differences found for the EO/RA and IO/RA ratio. The EO/RA and IO/RA ratio was the highest in the bridge exercise with their shoulders resting on a stable bench. CONCLUSION: These findings suggest that change of shoulder support surface during bridge exercise may be useful for enhancing the trunk stability.

The Trunk Muscles Activity on Whole Body Vibration during Bridging Position in Young Healthy Adults

김원태,이현주,태기식 한국정밀공학회 2016 International Journal of Precision Engineering and Vol.17 No.7

The aim of this study is to compare the activity of the trunk muscles on the unstable surface (US) and on the whole body vibration (WBV) during the bridging exercise mainly used for increasing the trunk stability in clinic research. The study randomly divided 32 healthy males into two groups. Both groups performed 3 types of position (the supine position, the prone position, and the sidelying position) on the US (Group A) and on the WBV (Group B). The surface electromyography was used to measure the muscle activity of the trunk muscles (rectus abdominis, external oblique, internal oblique, multifidus and erector spinae). When the bridging exercise was practiced in the supine position, the activities of the internal oblique, multifidus, and erector spinae were significantly increased on the WBV more than on the US (p<0.05). In the prone position, the activities of the rectus abdominis, multifidus, external oblique, internal oblique, and erector spinae were significantly increased on the WBV more than on the US (p<0.05). It is thought that the bridging exercise on the WBV is more effective at increasing trunk's muscle activation than on the US and that the intervention method of the WBV can be utilized as the bridging exercise program intervention used in the exercise method of the trunk stability in clinical research.

몸통 안정화 근육과 보행요소의 상관관계

채정병,정주현 대한고유수용성신경근촉진법학회 2019 PNF and Movement Vol.17 No.1

Purpose: This study aimed to investigate the correlation between trunk stabilization muscle activation and the parameters of gait analysis in healthy individuals. Methods: Thirty healthy adults (15 male, 15 female) with no history of lower back pain (LBP) or current musculoskeletal and neurological injuries were studied. Trunk stabilization muscle activation (e.g., external oblique, internal oblique, transverse abdominis, erector spinae) were assessed using surface electromyography. To analyze gait, we measured temporal parameters (e.g., gait velocity, single support phase, double support phase, swing phase, and stance phase) and a spatial parameter (e.g., H-H base of support). Results: A statistically significant correlation was found between the internal oblique, transverse abdominis, and erector spinae muscle activity and gait velocity, single support phase, double support phase, swing phase, and stance phase. No statistically significant correlation was found between the external oblique muscle activity and the gait velocity, single support phase, double support phase, swing phase, and stance phase. No statistically significant correlation was found between the external oblique, internal oblique, transverse abdominis, and erector spinae muscle activity and the spatial parameter. Conclusion: This study demonstrated that a relationship exists between trunk stabilization muscle activation and temporal parameter (i.e., gait velocity, single support phase, double support phase, swing phase, and stance phase) during gait analysis. Therefore, the trunk’s stabilizer muscles play an important role in the gait of healthy individuals.

슬링을 이용한 체간안정화 운동이 중년여성의 신체조성 및 체간안정성에 미치는 영향

오제겸(Je-Gyeom Oh),황인식(In-Sik Hwang),윤오남(Oh-Nam Yoon) 한국발육발달학회 2019 한국발육발달학회지 Vol.27 No.4

The purpose of this study is as follows. The purpose of this study was to investigate the effects of sling exercise on body composition and trunk stability in middle-aged women. The method of this study is as follows. In this study, Twenty women aged 50 to 65 were randomly divided into exercise groups(n = 10) and control groups (n = 10). The sling exercise was performed for 8 weeks. The data processing of this study is as follows. The mean and standard deviation were calculated using spss version 24.0. Paired t-tests were performed before and after exercise. The significance level was α = .05. The results of this study are as follows. In the exercise group, body fat percentage and skeletal muscle mass showed statistically significant differences with increasing body composition. In the exercise group, there was a statistically significant difference in the trunk stability in 6 directions: -45°, -90°, 135°, -135° and 180°. The conclusions of this study are as follows. Sling muscle stabilization exercise has a positive effect on body composition by increasing body fat percentage and decreasing skeletal muscle mass. In addition, the three-dimensional spinal stabilization test showed a significant increase in stability in 6°, -45°, -90°, 135°, -135°, and 180°, indicating a positive effect on trunk stability. Therefore, Therefore, the stabilization exercise using sling could have a positive effect on the body composition and trunk safety of middle-aged women.

정상인에서 5가지 체간 안정화 운동자세가 초음파 영상을 이용한 복부근 두께에 미치는 영향

강정현 ( Jung Hyun Kang ),심재훈 ( Jae Hyun Shim ),천승철 ( Seung Chul Chon ) 한국전문물리치료학회 2012 한국전문물리치료학회지 Vol.19 No.3

The aim of this study is to compare measurements of abdominal muscle thickness using ultrasonography imaging (USI) to those using a special transducer head device, during five different trunk stabilization exercises, ultimately to determine which exercise led to the greatest muscle thickness. Thirty eight healthy subjects participated in this cross-sectional study. The five types of trunk stabilization-i.e., a sit-up on the supine, an upper and lower extremity raise with quadruped on the prone, a leg raise in sitting on the ball, trunk rolling on the ball, and balance using sling on the prone position-were each performed with an abdominal draw. The thickness of the abdominal muscle-including the transverse abdominal (TrA), internal oblique (IO), and external oblique (EO)-was measured by USI with a special transducer head device, at rest and then at contraction in each position. Data were analyzed using one-way repeated ANOVA with the level of significance set at α=.05. The results were as follows: 1) the TrA thickness was statistically significant (p<.05), whereas the IO and EO thicknesses were not (p>.05); 2) among the five types of trunk stabilization, TrA thickness significantly increased with the balance using a sling in the prone position, (p<.05), whereas no significant difference was noted for the four types of trunk stabilization (p>.05); 3) reliability data showed that there was a high degree of consistency among the measurements taken using the special transducer head device (ICC=.92). In conclusion, the balance using a sling in the prone position was more effective than any of the four other types of trunk stabilization in increasing TrA thickness in healthy subjects.