본 연구의 목적은 알츠하이머질환(Alzheimer’s disease: AD) 동물 모델을 대상으로 트레드밀 운 동(Treadmill exercise: TE)과 환경강화(environmental enrichment: EE) 처치가 인지기능, 근 기능, 및 밀 착연접 단백질 발현에 미치는 영향을 확인하는데 있다. AD 동물 모델을 제작하기 위해 aluminum chloride(AlCl3)를 90일간(40mg/kg/하루) 투여 하였으며 동시에 TE(10-12m/min, 40-60min/day) 혹은 EE에 노출시켰다. 그 결과 AlCl3 투여에 의한 인지기능 저하와 근 기능 감소가 TE와 EE에 의해 완화된 것 으로 나타났다. 또한, TE와 EE는 AD 질환에서 나타나는 β-amyloid(Aβ), alpha-synuclein 및 tumor necrosis factor-α(TNF-α) 단백질의 발현 증가를 감소시킨 것으로 나타났다. 게다가 TE와 EE는 AlCl3 투여에 의해 감소된 밀착연접 단백질(Occludin, Claudin-5 및 ZO-1)의 발현을 통계적으로 유의하게 증가시킨 것으로 나타났다. 마지막으로 Aβ 단백질과 밀착연접 단백질과의 상관분석을 실시한 결과 부적 상 관관계(Occludin: r=-0.853, p=0.001; Claudin-5 : r=-0.352, p=0.915; ZO-1 : r=-0.424, p=0.0390) 로 나타났다. 따라서 이를 종합해 보면 TE 혹은 EE 처치는 AD에 나타나는 병리학적 특징들을 일부 완화 시켜 인지기능과 근 기능을 일부 개선 시킬 수 있는 효과적인 운동 방법이라고 생각된다.

Background: Low back and neck pain are two of the most common medical problems in the adult population. It is estimated that between 70% and 80% adults experience an episode of low back pain at least once during their lifetime. Objects: This study aimed to compare the effects of various stretching exercises and muscle energy techniques used for treatment of iliopsoas, quadratus lumborum, and hamstrings of patients with low back pain. Methods: A total of 52 subjects were randomly assigned to the control group (n = 17), the muscle energy technology group (METG, n = 19), and the stretching exercise group (SEG, n = 16). Interventions were performed twice a week for 4 weeks. Outcomes were measured before and after 4 weeks of treatment in the three groups, using the Korean version of the Oswestry Disability Index, the Visual Analogue Scale (VAS), the Fear Avoidance Belief Questionnaire (FABQ), the Finger to Floor test (FTF), the Modified-Modified Schober Test (MMS), and the Trunk Flexion Range of Motion test. Results: This study showed significant reduction in the pre-test and post-test KODI, VAS, and FABQ scores in all the three groups (p < 0.05). The KODI, VAS, FABQ and FTF assessed in this study showed interactions between the groups and the measurement time point (p < 0.01). After intervention, the KODI, VAS, FABQ and FTF in the SEG and METG were significantly higher (p < 0.05), and there was no difference between the METG and SEG. MMS and HFROM test showed no difference between the three groups (p > 0.05). Conclusion: KODI, VAS, FABQ and FTF showed significant improvement after basic physical therapy, muscle energy technique, and stretching exercise intervention. And there was no significant difference in the intervention effect between the muscle energy group and the stretching exercise group.

Background: It is reported that the proprioceptive sensation of patients with neck pain is reduced, and neck sensory-motor control training using visual feedback is reported to be effective. Objects: The purpose of this study is to investigate how sensorimotor control training for the cervical spine affects pain, function, and psychosocial status in patients with chronic cervical pain. Methods: The subjects consisted of 36 adults (male: 15, female: 21) who had experienced cervical spine pain for more than 6 weeks. An exercise program composed of cervical stabilization exercise (10 minutes), electrotherapy (10 minutes), manual therapy (10 minutes), and cervical sensorimotor control training (10 minutes) was implemented for both the experimental and the control groups. The cervical range of motion (CROM) and head repositioning accuracy were assessed using a CROM device. In the experimental group, the subjects wore a laser device on the head to provide visual feedback while following pictures in front of their eyes; whereas, in the control group, the subjects had the same training of following pictures without the laser device. Results: There were no statistically significant differences between the two groups in pain, dysfunction, range of motion, or psychosocial status; however, post-test results showed significant decreases after 2 weeks and 4 weeks compared to baseline (p < 0.01), and after 4 weeks compared to after 2 weeks (p < 0.01). The cervical joint position sense differed significantly between the two groups (p < 0.05). Conclusion: In this study, visual feedback enhanced proprioception in the cervical spine, resulting in improved cervical joint position sense. On the other hand, there were no significant effects on pain, dysfunction, range of motion, or psychosocial status.

Background: Stretch-oriented home exercise programs are often used as treatments for patients with adhesive capsulitis; however, there is lack of research on home exercise programs to strengthen rotator cuffs. Objects: The aim of this study is to investigate the effect of home exercise programs for rotator cuff strengthening on pain, range of motion (ROM), disability level, and quality of life in patients with adhesive capsulitis. Methods: Twenty-two patients with adhesive capsulitis volunteered to participate in this study. The subjects were randomly divided into an experimental group (n = 11) and control group (n = 11). For the experimental group, manual therapy and home exercise programs for rotator cuff strengthening were applied for 6 weeks; for the control group, only manual therapy was applied for 6 weeks. Shoulder pain (quadruple visual analogue scale, QVAS), ROM, disability (shoulder pain and disability index-Korean version, SPADI), and quality of life (world health organization quality of life scale-Korean version, WHOQOL-BREF) were evaluated at baseline, after 3 weeks, and after 6 weeks of intervention. The changes in the measurement variables were analyzed by using repeated measure analysis of variance. Results: Significant differences were observed between the experimental group and control group in the QVAS; SPADI-pain scores; SPADI-disability scores; SPADI-total scores; flexion, abduction, internal and external rotation ROM of the glenohumeral joint; and WHOQOLBREF total, overall, physical health, and psychological scores. All groups displayed statistically significant improvements as observed in the QVAS, SPADI, flexion, abduction, external and internal rotation ROM of the glenohumeral joint, and WHOQOL-BREF. Conclusion: Home exercise programs for rotator cuff strengthening had a positive impact on shoulder pain, shoulder ROM, disability level, and quality of life in patients with adhesive capsulitis. Therefore, we propose the use of home exercise programs for rotator cuff strengthening in the exercise rehabilitation of patients with adhesive capsulitis.

Background: Individuals with mechanical neck pain show biomechanical and neurophysiological changes, including cervical spine muscle weakness. As a result of deep muscle weakness, it causes stability disability and reduced upper thoracic spine mobility, which finally leads to functional movement restriction such as limited range of motion and dysfunction. Recent studies have shown that thoracic spine manipulation and mobilization could reduce symptoms of mechanical neck pain in patients. Objects: The purpose of this study was to investigate the effects of thoracic mobility exercise on cervicothoracic function, posture feature, and pain intensity in individuals with mechanical neck pain. Methods: The study subjects were 26 persons who were randomly assigned to the experimental (with thoracic mobility exercise) and control groups (without thoracic mobility exercise), with 13 subjects in each group. The cervicothoracic function (neck functional disability level and cervicothoracic range of motion), posture feature, and pain rating (using a quadrupled visual analogue scale [QVAS]) were measured before, after 3 weeks, and after 6 weeks. Results: Statistically significant group-by-time interactions were found with repeated analyses of variance for the Korean neck disability index (KNDI), all cervical range of motion (CROM), all thoracic range of motion (TROM), cranial rotation angle, sagittal shoulder posture (SSP), and QVAS (p<.05). All groups showed significant improvements from all times in all the evaluated methods. The KNDI, CROM, TROM of left rotation, and SSP in the experimental group showed significant improvements after 3 weeks, and the TROM of the right rotation and QVAS in the experimental group showed significant improvements after 6 weeks when compared with the control group. Conclusion: Thoracic mobility exercise during 6 weeks might be effective intervention to improve the functional level, posture feature, and QVAS pain rating for managing individuals with mechanical neck pain.

Background: Sling exercises are frequently used for the rehabilitation process of patients with shoulder joint injuries, but research on the significant frequency intensity and appropriate treatment duration for sling exercises with local vibration stimulation is lacking. Objects: The aim of this study was to investigate the effects of sling exercise with vibration on shoulder range of motion (ROM), muscle strength, pain, and dysfunction in patients with a medical diagnosis of shoulder joint injury. Methods: Twenty-two patients were randomly assigned to the experiment and control groups. Six sling exercises with and without 50 ㎐ vibrations were applied in the experiment and control groups, respectively. Each exercise consisted of 3 sets of 5 repetitions performed for 6 weeks. The assessment tools used included shoulder joint range of motion, muscle strength, pain level, and shoulder pain and disability index for functional disability. We conducted re-evaluations before and 3 and 6 weeks after intervention. The changes in the measurement variables were analyzed and compared between the two groups. Results: The ROM of the external rotation of the shoulder joint had a significant interaction between the group and the measurement point (F=3.652, p<.05). In both groups, we found a significant increase in external rotation angle between the measurement points (p<.05). The flexor strength of the shoulder joint significant interaction between the group and the measurement point (F=4.247, p<.05). Both the experiment (p<.01) and control groups (p<.05) showed a significant increase in shoulder flexor strength at the measurement points. After 6 weeks of the interventions, both the groups showed significantly improved VAS (p<.01), SPADI (p<.01), and orthopedic tests (p<.01). However, there was no significant difference between the group and the measurement point in terms of the clinical outcomes observed. Conclusion: The sling exercise with local vibration of 50 ㎐ affected the external rotation of the shoulder range of motion and improved shoulder flexor strength in the patients with shoulder injuries. Therefore, we propose the use of the sling exercise intervention with vibration in the exercise rehabilitation of patients with shoulder joint injuries.

Background: Compared to healthy people, patients with chronic lower back pain have reduced balance abilities which may cause proprioception problems, patients with chronic lower back pain avoid physical activities due to pain, and reduced activity levels lead to muscle weakening, which can further exacerbate pain. Recently, there have been many studies on the use of sensory stimulation; and among these studies, interventions that use vibrational stimulation have shown functional improvements in the patients. Objects: This study examined the effects of a stabilization exercise with vibration stimulation on the balance ability and disability in patients with chronic back pain. Methods: The subjects of the study were 30 persons who were randomly assigned to the experimental group and the control group, with 15 subjects in each. The subjects were evaluated before and after intervention via a balance ability test, the Korean Oswestry disability index (KODI) test, a pain test, and a proprioceptive sensory test. Both groups received general physical therapy. The experimental group performed the stabilization exercise with vibration stimulation, and the control group performed a general stabilization exercise, three times a week for six weeks. Results: After the intervention, both groups showed significant improvements in the balance ability test, the KODI test, the pain test, and the proprioceptive sensory test. The experimental group showed statistically significant, higher improvements than the control group in the balance ability test, the KODI test, and the proprioceptive sensory test. Conclusions: The stabilization exercise with vibration stimulation for patients with chronic back pain has been reported to provide greater functional improvements than the conventional intervention method. Therefore, the stabilization exercise in a vibration stimulation environment could be a useful intervention for patients with chronic back pain.

Background: High string instrument (violin, viola) players are at high risk for developing musculoskeletal problems. In particular, a higher prevalence of shoulder problems has been reported. However, evidence of the effectiveness of therapeutic exercise for musicians with this condition is lacking until now. Objects: This case series study investigated the effect of a specific exercise program on shoulder pain, dysfunction, and posture of professional orchestral high string musicians. Methods: Five professional orchestral high string players with shoulder pain participated in this study. A six-week specific exercise program focus on scapular stability for shoulder pain consisted of scapular muscle exercise. Physical examinations for pain and dysfunction, posture were performed, were identified among all subjects before starting the exercise program. Results: The results revealed that shoulder pain decreased by 67.86% and the effect of pain on instrument play decreased by 63.33%. The shoulder pain and disability Index and the performing arts module-quick disability of the arm, shoulder and hand scale decreased by 71.72% and 51.61% respectively. The exercise program improved function and posture. Conclusion: A specific exercise program for high string players was effective in managing shoulder pain. This case series is intended to provide empirical data on the effectiveness of an exercise program aimed at assessing the effect of exercise on pain, dysfunction, and posture of professional orchestra musicians associated with specific instrument groups.

The purpose of this study was to investigate the association of homocysteine and antioxidant nutrients with obesity in Korean middle aged women. The study subjects included were middle-aged obese women (n=36) whose body mass index (BMI) was greater than 25 kg/m2. A total of 36 participants were randomly divided into two groups. They were assigned to either the Nutritional Management and Exercise (NME) program or the Exercise Management (EM) program, which were both conducted for 3 months. We measured serum homocysteine, total cholesterol and HDL cholesterol levels of the participant. We also measured the dietary intakes of antioxidant nutrient, cholesterol, body weight, body mass index, blood pressure, and VO2. At the end of both programs, please confirm this change. It was unclear when these measurements were shown to have decreased. The body weight and BMI of NME group were decreased compared to those of EM group. The serum total cholesterol levels of the participants in NME group were significantly decreased, in contrast to EM group. Also, serum homocysteine levels of NME group participants were decreased compared to EM group, but the difference was not statistically significant. In the NME group, there were significant differences in the change of dietary cholesterol and vitamin C intake. These results showed that participating NME program will continuously promote the healthy status of the middle aged obese women, compared to participating only in the EM program.

운전자의 신경증 수준에 따른 상황인식과 안구운동 및 운전수행에서의 차이를 비교하였다. 정적인 운전장면을 실험자극으로 사용한 실험 1에서는 신경증 수준에 따른 상황인식에서의 차이는 유의하지 않았던 반면, 안구운동의 경우 신경증 저집단에 비해 고집단이 실험자극의 주변영역에 대해 안구고정 시간비율과 안구고정 빈도비율이 모두 낮았다. 실험 2에서는 운전 시뮬레이터를 이용하여 실험참가자들이 실제 상황에 가깝게 운전하도록 한 후, 신경증 수준에 따른 상황인식, 안구운동, 그리고 운전수행 측정치에서의 차이를 비교하였다. 그 결과, 실험 1의 결과와는 대조적으로 신경증 고집단은 저집단에 비해 상황인식 점수가 상대적으로 낮았던 반면, 실험 1의 결과와 마찬가지로 신경증 실험자극의 주변영역에 대한 안구고정 시간비율과 안구고정 빈도비율이 상대적으로 낮았다. 특히, 운전수행 측정치에 대한 비교 결과, 신경증 고집단이 저집단에 비해 차선중앙 이탈값이 더 컸고 평균 운전속도도 더 느렸다.

본 연구는 2001년 8월부터 2003년 12월까지 충남대학교 생명과학대학 내 초지시험포장에서 N 시비수준이 Kentucky bluegrss 잔디초지의 건물수량과 품질에 미치는 영향을 구명하고자 수행하였다. N 시비수준은 100, 150 및 200kg/ha의 3처리를 두어 시험하였으며, 얻어진 결과는 다음과 같다. 2년 평균 ha당 건물수량은 N 시비수준이 높아짐에 따라 현저히 증가되어, N 100, 150 및 200kg시비수준에서 각각 6,317, 8

The purpose of this study was to identify the relationship between motor and mental status and functional status, and to determine appropriate test times. Using the Modified Motor Assessment Scale(motor status) and the Modified Barthel Index(functiona1 status), the Glasgow Coma Scale(menta1 status), we tested 9 stroke patients. 1 week. 1 month after their stroke. Three measures are reliable and valid. We used the Sperman correlation coefficient(r) and Wilcoxon signed rank test to analyze the data. MMAS scores at 1 month correlated significantly with MBI scores at 1 month(r=0.89). But GCS scores at 1 month did not correlate significantly with MBI scores at 1 month. All data of MMAS at 1 month correlated significantly with MBI scores at 1 month. But only verbal response score among GCS scores at 1 month correlated significantly with MBI scores at 1 month(r=0.86). The difference of MMAS, GCS. MBI scores between 1 week and 1 month after stroke onset were statistically significant(p(0.05). This study suggested that the mental status had more impact on functional recovery than motor status at 1 week after their stroke. Also, the motor status had more impact on functional recovery than mental status at 1 month after their stroke. But the mental and motor status should be considered together in predicting the functional recovery status of stroke patients.

목적: 본 연구는 아동의 운동발달 수준에 따른 손가락의 최대근력과 신경역학적 특성을 규명하기 위한 예비연구 이다. 방법: 아동의 운동발달 수준을 평가하기 위하여 경기도 S시 지역아동발달센터에서 모집한 초등학교 2-4학 년생 31명을 대상으로 Movement Assessment Battery for Children-2(MABC-2)를 실시하였다. 이 중 보호자와 아 동이 본 실험에 참여하는 것을 동의한 일반아동 8명과 운동발달 지연이 의심되는 아동 6명을 대상으로 힘 센서를 사용하여 각각 왼손, 오른손, 양손의 손가락 최대근력을 측정하였다. 측정된 최대근력을 통해 각 조건의 손가락 최대근력과 신경역학적 특성을 의미하는 수지독립성을 산출하였으며, 집단의 차이를 규명하기 위해 독립 t-검정 및 맨-휘트니 U 검정을 실시하였다. 결과: 운동발달에 지연이 의심되는 아동은 일반아동과 동일한 수준의 손가락 근력을 지녔다. 그러나 양손 간 수지독립성의 경우 운동발달 지연이 의심되는 아동의 비우세 손이 더 독립적으로 움직이는 특성을 보였다. 결론: 운동발달 지연이 의심되는 아동이 일반아동에 비해 소근운동기술이 부족 한 원인은 손가락 근력의 문제라기보다 손가락 힘을 발생시킬 때 나타나는 신경역학적 특성인 수지독립성의 차이에 따른 것으로 생각된다. 이러한 연구결과는 운동협응 능력이 부족한 아동들의 손가락 제어 기전을 이해하기 위 한 기초자료로 활용될 수 있을 것이다.

목적: 본 연구의 목적은 누운 자세에서 일어서기(supine to standing: STS) 과제 수행 시 유아의 운동발달 수준에 따른 움직임 패턴의 차이점을 규명하는 것이다. 연구대상자는 만 4-6세 유아 89명에게 운동발달검사(MABC-2)를 실시한 후 목적적 표집방법을 통해 선정된 20명의 유아들을 운동발달 수준에 따라 각각 운동발달 상(n=9)집단과 하(n=11)집단으로 배정되었다. 연구대상자들은 누운 자세에서 일어서기 과제를 ‘최대한 빨리 일어나세요.’라는지 시어를 듣고 10회 반복하여 수행하였다. 이때 나타난 유아들의 움직임은 VanSant의 움직임 패턴 발달순서 평가 도구를 사용하여 측정하였다. 그 결과, 누운 자세에서 일어서기 과제 수행 시 소요된 시간과 유아가 사용한 움직임 패턴에서 두 집단 간에 유의한 차이가 나타났으며 특히, 상지와 체간에서 더 큰 차이를 보였다. 운동발달상 집단에서는 전체적으로 대칭적인 움직임 패턴이, 하집단에서는 비대칭적인 움직임 패턴이 나타났으며, 이는 운동 발달 상집단이 하집단보다 상위의 움직임 전략을 사용한다는 것을 의미한다. 누운 자세에서 일어서기 과제의 수행시간도 운동발달 상집단보다 하집단에서 더 길게 소요되었다. 또한, 운동발달평가 점수와 움직임 패턴의 상관관계 분석 결과, 운동발달 평가점수와 신체 부분(상지, 체간, 하지) 간에 정적상관관계가 있는 것으로 나타났다. 이러한 연구결과를 토대로 더 세밀한 운동발달 검사가 필요한 아동들을 보다 쉽고 간편하게 선별할 수 있을 것으로 기대한다. 그리고 기존의 운동발달 평가도구들이 가지고 있는 시공간적 제한점을 보완할 수 있다는 측면에서 실제 교육현장이나 운동발달 연구 영역에서 유용하게 적용될 수 있을 것으로 생각한다.

목적: 운동선수의 경기력 수준에 따른 작업기억 능력과 전전두엽의 활성화 차이를 밝히는데 있다. 방법: 이를 위 하여 세계랭킹 10위 안에 있는 국가대표 선수와 경력 5년 미만의 선수 그리고 비선수 각각 12명 씩 총 36명이 실험에 참여하였다. 각 연구대상자는 실험 중 기능적 근적외선 분광분석법을 이용해서 전전두엽 활성도가 측정되 는 동시에, 2가지의 공간적 작업기억 과제를 60회씩 총 120회 실시했다. 결과: 반응시간의 차이는 국가대표 선수 들이 나머지 두 집단보다 빠르게 판단하는 것으로 나타났으며, 과제 난이도에 따라서 1-back 과제보다 2-back 과 제에서 세 집단 모두 반응시간이 느리게 나타났다. 전전두엽의 뇌 혈류량의 차이는 1-back에서는 집단 간 차이를 보이지 않았으나, 2-back에서 작업기억과 관련 있는 배외측전전두피질(DLPFC)영역에서 집단 간에 활성화 수준의 차이를 보였다. 결론: 세계적인 수준의 선수들은 작업기억 능력이 좋으며 이와 동시에 전전두엽 특정 영역의 활 성화 수준에 차이가 있음을 검증하였다. 본 연구의 결과는 최고 엘리트 운동선수의 경우에서만 경기력 수준에 따 른 인지적 능력의 차이가 있음을 보고함으로써, 기존의 선행 연구들이 일치된 결론에 이르지 못했던 운동 능력과 인지 능력의 관련성에 관한 추가적인 해석과 더불어 이를 보완하는 신경학적인 증거까지 제시하고 있다.

목적: 본 연구는 익스트림 스포츠 종목의 특수성을 고려하여 익스트림 스포츠 참여자와 일반 생활체육 참여자와의 감각추구성향 및 자기결정적 동기를 비교하고, 익스트림 스포츠 참여에 대한 자기결정적 동기와 감각추구성향의 상호작용효과를 검증하는데 목적이 있다. 방법: 연구참여자는 익스트림 스포츠(암벽등반, MTB, 웨이크보드, 서핑, 패러글라이딩, 스쿠버다이빙) 참여자 179명, 일반 생활체육 종목(웨이트 트레이닝, 필라테스, 요가, 발레) 참여 자 191명을 대상으로 선정하였다. 본 연구는 SPSS 22.0, AMOS 18.0 프로그램을 활용하여 기술통계분석과 상관 관계분석을 실시하였으며, 질문지의 구성타당도를 검증하기 위해 확인적 요인분석을 실시한 후, 각 요인별 신뢰도 분석을 실시하였다. 다음으로 참여 종목에 따른 감각추구성향과 자기결정적 동기를 비교하기 위해 독립표본 t-test 를 실시하였으며, 익스트림 스포츠 참여에 대한 자기결정적 동기와 감각추구성향의 상호작용 효과를 검증하기 위해 위계적 회귀분석을 실시하였다. 결과: 첫째, 운동 참여종목에 따른 자기결정적 동기와 감각추구성향의의 차이 를 살펴본 결과, 감각추구성향의 하위요인 중 스릴과 모험추구, 경험추구, 권태민감성에서, 그리고 자기결정적 동기 요인 중 확인규제, 내적규제요인에서 익스트림 스포츠 참여자가 일반 생활체육 참여자 보다 통계적 유의수준에서 높게 나타났다. 둘째, 익스트림 스포츠 참여자들의 자기결정적 동기와 참여 빈도와의 관계에서 감각추구성향의 상호작용 효과를 살펴본 결과 스릴과 모험추구, 경험추구, 권태민감성 요인의 상호작용 효과가 있는 것으로 나타났다. 결론: 이에 본 연구에서는 익스트림 스포츠와 일반 생활체육 참여자의 심리적 특성 차이를 확인할 수 있었으며, 높은 자기결정적 동기 수준과 더불어 새로운 감각과 경험을 추구하는 성향이 익스트림 스포츠 참여의 중요한 요소라는 것을 규명하였다.

본 연구는 중학교 남자 투창 선수들의 기록수준별 창던지기 동작에 대한 운동학적 분석을 통하여 기록에 영향을 미치는 요인을 규명하고자 하였다. 이러한 목적을 달성하기 위하여 제 47회 전국 소년체육대회에 참여한 중학교 남자 선수들이 수행한 창던지기 종목을 2대의 비디오카메라로 촬영 후 결선에 진출한 선수 8명과 결선에 진출하기 못한 선수 8명에 대하여 3차원 동작 분석을 실시 하였다. 기록 수준에 따른 운동학적 변인 차이를 규명하기 위하여 SPSS 20을 이용하여 독립 t 검증을 실시하였다(p<.05). 그 결과 결선진출 집단이 결선미진출 집단에 비해 투사속도, 스트라이드 길이, 릴리즈 시 무릎각도에서 크게 나타났고, 공격각과 창의 자세각에서는 작게 나타났다(p<.05). 창의 공격각도, 릴리즈 시 창그립과 파울라인 거리, 무게중심의 수직속도 변화에서 변동계수가 크게 나타났다. 이러한 결과를 요약하면 중학교 남자 선수들의 기록 향상을 위해서는 동작의 일관성을 유지하면서 마지막 스트라이드 길이를 길게 하고 지지발 착지 시 무릎각을 최대로 신전시키면서 창의 자세각을 낮추어야 한다.

Purpose: Postural stability has an important role for developing locomotion skills, especially in childhood. The purpose of this study was to investigate the developmental change of postural stability with respect to locomotor skills. Methods: Thirty-five participants aged between five to seven year-old whom differentiated by pre examination were divided into Jumping, Hopping, Galloping and Skipping group, respectively. They were asked to perform quiet standing and leaning voluntarily forward, backward, left and right as far as possible on a force plate. A vector of center of pressure was measured to calculate postural stability and one-way ANOVA was performed. Results: Jumping group showed significant low postural stability than the others and there is no significant difference among Hopping, Galloping, and Skipping group who can perform advanced locomotor skills. Conclusion: Postural stability seems to increase when children acquire advance locomotor skills and this result might reflect nonlinear characteristic of human motor development.