• 미래기술융합논문지
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• 1권1호
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• pp.33-42
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• 2022

무릎관절의 굽힘근과 폄근은 신체의 안정성을 유지하는 데 필수적이다. 본 연구는 무릎 굽힘근 및 폄근의 등속성 파라미터와 하지 근육 기능의 상관관계를 조사하고자 하였다. 22명의 건강한 성인이 본 연구에 참여하였습니다. 무릎 굽힘근 및 폄근의 time to peak torque (TTP), acceleration time (AT), peak torque (PT)가 측정되었습니다. 하지 기능 평가를 위해 20m sprint, Sargent jump, one leg hop test, and side shuffle이 측정되었습니다. 각 변수들 간의 상관관계가 Pearson correlation coefficient을 사용하여 분석되었습니다. knee flexor의 PT는 single leg hops and 6M hops in a single leg와 유의한 상관관계를 나타내었다. knee extensors의 PT는 Sargent jumps and triple hops와 유의한 상관관계가 갖는 것으로 발견되었다. 본 연구 결과를 기반으로 무릎 굽힘근 및 폄근의 근력이 하지 기능을 예측하는 데 사용될 수 있는 가능성이 있음을 시사한다.

• PNF and Movement
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• 제21권3호
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• pp.319-326
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• 2023

Purpose: The purpose of this study was to investigate the effects of modified ankle movement patterns on participants' active dorsiflexion range of motion and leg muscle activity. Methods: This study recruited twenty-five participants, all of whom were healthy individuals with no abnormalities in the ankle or knee joints. The research methodology involved measuring the active dorsiflexion range of motion and muscle activity in each person's legs based on the presence or absence of toe extension while the subjects were in a comfortable, supine position. A statistical analysis was conducted using SPSS 25.0, and a paired samples t-test was employed. The significance level was set at 0.05. Results: When the participants demonstrated the modified ankle movement pattern with a controlled toe grip, there was an increase in their active dorsiflexion angle. However, during the proprioceptive neuromuscular facilitation technique without a controlled toe grip, a higher level of activity was observed in the leg muscles. Conclusion: The results of this study could be used as foundational data for establishing a rehabilitation exercise program designed to enhance range of motion and muscle activation in the ankle joint.

• 한국전문물리치료학회지
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• 제25권2호
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• pp.22-29
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• 2018

Background: Deficits of both ankle dorsiflexion range of motion (DFROM) and dynamic balance are shown in persons with chronic ankle instability and the elderly, with the risk of falls. Objects: This study aims to investigate the relationship between DFROM and dynamic balance in elderly subjects and young adults. Methods: Fifty-nine subjects were divided into three groups: ankle stability young group (SY), ankle instability young group (IY) and ankle stability older group (SO). We recruited three old subjects with ankle instability, but excluded them during a pilot testing due to the safety issue. DFROM was measured by weight bearing lunge test (WBLT) and dynamic balance was measured via star excursion balance test (SEBT) in anteromedial, medial, and posteromedial directions. The group differences in WBLT and SEBT and each group's correlation between WBLT and SEBT were detected using the R statistical software package. Results: The dorsiflexion range of motion was significantly different between the SY, IY, and SO groups. The SO group showed the highest DFROM and IY group showed the lowest DFROM (SY: $45.88{\pm}.66^{\circ}$, IY: $39.53{\pm}1.63^{\circ}$, SO: $47.94{\pm}.50^{\circ}$; p<.001). However, the SO group showed the lowest dynamic balance score for all SEBT directions (SY: $87.24{\pm}2.05cm$, IY: $83.20{\pm}1.30cm$, SO: $77.23{\pm}2.07cm$; p<.05) and there was no relationship between the dorsiflexion range of motion and dynamic balance in any group. Conclusion: Our findings suggest that ankle DFROM is not a crucial factor for dynamic stability regardless of aging and ankle instability. Other factors such as muscle strength or movement coordination should be considered for training dynamic balance. Therefore, we need to establish the rehabilitation process by measuring and treating ROM, balance, and muscle strength when treating young adults with and without ankle instability as well as elderly people.