• 한국전문물리치료학회지
• /
• 제14권3호
• /
• pp.41-47
• /
• 2007

Dance movements consist of combinations of movements such as jumping, rotation, maintaining balance, leg lifts, and plantar flexion with toe shoes. Dance movements require great muscle strength of lower extremities as well as muscular endurance. The purposes of this study were to investigate correlation between the anthropometric variables and the peak torque in young female dancers and to identify variables that affect isokinetic peak torque. Twenty-six female dancers ($19.7{\pm}1.2$ years of age) performed concentric maximum force efforts on the knee extensors and flexors at $60^{\circ}/sec$ and $120^{\circ}/sec$, the ankle plantar flexors (PF) and dorsiflexors (DF) at $30^{\circ}/sec$ and $120^{\circ}/sec$. Antropometric variables such as age, height, weight, body mass index (BMI), thigh girth, calf girth and duration of dance training were measured. To identify antropometric variables related to muscle strength, Pearson correlations were computed and a stepwise multiple regression analysis was performed. Pearson correlation coefficients of Knee extensor at $60^{\circ}/sec$ and $120^{\circ}/sec$ revealed moderate positive associations with BMI and thigh girth. Pearson correlation coefficients of ankle PF revealed low-to-moderate positive associations with height. Ankle DF also revealed moderate positive associations with BMI and calf girth. The main predictor variables of knee extensor at 60/sec, were stepwise multiple regression, age, height, thigh and girth.

• Physical Therapy Rehabilitation Science
• /
• 제6권4호
• /
• pp.182-188
• /
• 2017

Objective: The purpose of this study was to compare ankle function between adults with and without Down syndrome (DS). Design: Cross-sectional study. Methods: Ten adults with DS and 18 without participated in this study and underwent manual muscle test (MMT), range of motion (ROM) assessment, star excursion balance test (SEBT), and functional movement screen (FMS). The tests were demonstrated to increase their accuracy and the actual measurements were assessed after one or two demonstrations. To minimize the standby time and fatigue, the travelled distance and measuring order were adjusted. To remove the influence of shoes on the measurements, the shoes were taken off and only socks were worn. Results: Dorsal and plantar flexion MMTs of both ankles were significantly weaker and plantar flexion ROM of both ankles were significantly lower in adults with DS compared with those without (p<0.05). However, dorsal flexion ROM of both ankles were not significantly different between them. There were significant differences in distances measured in all the directions (anterior, anterolateral, lateral, posterolateral, posterior, posteromedial, medial, and anteromedial directions) of SEBT (p<0.05). Significant differences were also demonstrated in the scores of hurdle step, inline lunge, shoulder mobility, and rotary stability among the seven items of FMS (p<0.05). Conclusions: To enhance the dynamic stability of adults with DS, it is necessary to improve ankle stability by strengthening the ankle dorsal and plantar flexors.

• The Journal of Korean Physical Therapy
• /
• 제12권2호
• /
• pp.145-152
• /
• 2000

슬관절 자세에 따라 족관절 저측굴곡관의 근력을 비교 분석하기 위하여 건강한 남녀 20명을 대상으로 Cybex 6000을 사용하여 측정한 결과는 다음과 같다. 1. 최대 토오크 값은 양쪽 모두 슬관절 신전상태서 $90^{\circ}$ 굴곡에서보다 높았다. 슬관절 신전상태에 대한 $90^{\circ}$ 굴곡에서의 토오크 값의 비는 운동속도 $30{\circ}/sec$ 와 $90{\circ}/sec$에서 각각 $75.7\%\;85.2\%$였다. 2. 최대 토오크는 $30{\circ}/sec\;90^{\circ}/sec$에서 모두 슬관절 신전상태에서 $90^{\circ}$ 굴곡상태에서보다 운동의 초기에서 나타났으나 유의란 차이는 업었다. 3. 저측룰곡근의 총일량은 굴곡보다 신전상태서 높았다. 슬관절 신전상태 대한 $90^{\circ}$ 굴곡에서의 총일량의 비는 운동속도 $30{\circ}/sec$와$90{\circ}/sec$에서 각각$81\%,\;89\%$였다. 4 저측굴곡근의 근지구력은 슬관절 신전상태와 $90^{\circ}$ 굴곡상태애서 $78.35\%,\;92.70\%$로 굴곡상태에서 높았다. 5. 일률은 $30{\circ}/sec$에서 슬관절 신전에서 높았다. 위 연구 결과는 족관절 손상환자의 물리치료 시에 배 측굴곡근과 저측굴곡근의 근력 비와 더불어 근재교육에 유용한 자료로 사용될 수 있을 것으로 사료된다. 또한 근력증가를 위한 목적으로 운동치료 시 슬관절 신전상태에서의 저측굴곡운동이 더 효율적인 방법이라 생각된다.

• The Journal of Korean Physical Therapy
• /
• 제19권5호
• /
• pp.11-19
• /
• 2007

Purpose: The purpose of this study was to examine effect of trunk control using pelvic movements upon the foot pressure in patients with hemiplegia. Methods: Twelve males with hemiplegia were the procedure executed turnk control using pelvic movements. The foot pressure were measured using Parotec-system. Results: The data were analysed with paired t-test. First, there was a significant increase in external and internal sensors of dynamic foot pressure change of the hindfoot before and after therapy. Also there was significant increase in hallux (p<0.05). Second, there was a significant increase of affected side in support phase(p<0.05) and decreased of affected side in overlapping phase(p<0.05). Third, there was a significant increase in foot floor contact time and impulse pressure rate between affected and non affected side(p<0.05). Conclusion: The trunk control with pelvic movement had an significant effect on the legs by increase activities of hip flexors and abductors. Also had an effect on ankle dorsiflexion and plantar flexor by biomechanical movement.

• The Journal of Korean Physical Therapy
• /
• 제29권1호
• /
• pp.39-43
• /
• 2017

Purpose: This study was to investigate the effects of unilateral muscle fatigue in knee and ankle joints on balance and gait in healthy adults. Methods: Exercise inducing muscle fatigue in the knee joint consisted of concentric and eccentric contraction of dominant knee extensors in healthy adults by using the Leg Extension Rehap exercise machine (HUR, Finland). Exercise inducing muscle fatigue in the ankle joint was composed of voluntary contractions and forced contractions of the dominant plantar flexors in healthy adults. Exercises to induce muscle fatigue in the knee and ankle joints were performed until the subject complained of fatigue or pain, the occurrence of muscle fatigue was confirmed by electromyography. We measured static and dynamic balance using the Good Balance system and gait performance by RS-scan. Results: Static and dynamic balance ability and spatial-temporal gait decreased significantly after muscle fatigue in knee and ankle joint. Conclusion: These results show that unilateral muscle fatigue of the lower extremities affected postural control and gait. Therefore, therapists and sport trainers should minimize the risks of fall and injuries related to unilateral muscle fatigue.

• 한국전문물리치료학회지
• /
• 제15권3호
• /
• pp.8-16
• /
• 2008

The range of motion (ROM) of ankle dorsiflexion in older women was associated with gait abnormalities and the risk of falls. The purpose of this study was to investigate the effect of self-stretching exercise on the flexibility of the plantar flexors of the ankle and the characteristics of gait in healthy elderly women. Fifteen participants were assigned randomly into an exercise (n=8) or control (n=7) group. The exercise group attended a self-stretching program approximately 30 minutes for 3 days per week for 4 weeks. The active ankle dorsiflexion ROM and gait measurements were taken prior to beginning the stretching program and 1 day after the last stretching day. Results showed that the active ankle dorsiflexion ROM was significantly increased in the exercise group than in the control group after the stretching program (p<.05). However, gait parameters, including gait speed, cadence, and stride length were not significantly different between the two groups (p>.05). The results suggest that a 4-week self-stretching program is capable of provoking a significant increase in ankle dorsiflexion ROM in elderly, community-dwelling women. Additional research is needed to investigate the effect of gait-specific exercise combined with stretching exercise on gait ability.

• 한국운동역학회지
• /
• 제17권4호
• /
• pp.57-64
• /
• 2007

The purpose of this study was to investigate comparative analysis of the vertical ground reaction force variables during landing from vertical jump blocking in volleyball through GRF analysis system. The subjects participated in this study were 6 male university volleyball player and 6 male acted as a control group. The results are as follows: 1. The skilled group was longer than the unskilled group in flight time during vertical jump blocking. 2. The skilled group was faster than the unskilled group in tFz2 during landing from vertical jump blocking. 3. The skilled group was higher than the unskilled group in Fz2 during landing from vertical jump blocking. 4. The skilled group was higher than the unskilled group in Fz2LR during landing from vertical jump blocking. 5. The skilled group was higher than the unskilled group in impulse during landing from vertical jump blocking. Consequently, during landing from vertical jump, the landing strategy of the skilled group was found as a form of a stiff landing. Therefore, this landing strategy will be required to strengthen of hip and knee extensors and ankle plantar flexors for injury prevention.

• 대한물리치료과학회지
• /
• 제2권4호
• /
• pp.739-747
• /
• 1995

The purpose of this study was to evaluate and compare the Limits of stability(LOS) in hemiplegic patients who can walking independently. The LOS was measured at stable surface, unstable surface with eye open and eye closed. In this study, 18 out-patients were evaluated who were treated at Yonsei University Medical Center Rehabilitation Hospital. In order to determine the statistical significance of results, T-test, paired t-test, and Kruskal-Wallis 1-way ANOVA were applied at 0.05 level of significance. The results were as follows: 1. The mean of lateral limits of stability was 9.89 degree. 2. The mean of anteroposterior limits of stability was 6.43 degree. 3. There was a significant difference of limits of stability between sound side and affected side(p<0.05). 4. The limits of stability was significantly decreased with eye closed(p<0.05) 5. The limits of stability was significantly decreased at unstable surface(p<0.05). 6. The limits of stability was a significant difference as spasticity degree of ankle plantar flexors(p<0.05). These results showed that the limits of stability in hemiplegic patients was more decreased than that of normal adult. In order to improve the balance in hemiplegic patients, we need to increase the limits of stability.

• Physical Therapy Rehabilitation Science
• /
• 제11권3호
• /
• pp.344-349
• /
• 2022

Objective: The purpose of the present study was to determine whether sit to stand training combined with ultrasound improves the spasticity, muscle strength and gait speed in stroke patients Design: Randomized controlled study Methods: The current study included 40 stroke patients, who were randomly divided into two groups: the sit to stand training with ultrasound (USTS) group (n=20) and the sit to stand training (STS) group (n=20). All the participants underwent 30 sessions of STS training (thirty minutes, five days per week for six weeks). Additionally, the USTS group received ultrasound therapy. The present study evaluated the spasticity of ankle plantar-flexors by the composite spasticity score. The muscle strength and gait speed were evaluated using the handheld dynamometer and the 10-meter walk test, respectively. Results: The USTS group and the STS group showed significant improvements in spasticity, muscle strength and gait speed after the intervention (p<0.05). Significant improvement in the spasticity, muscle strength, and gait speed were observed in the USTS group compared to the control group (p < 0.05). Conclusions: The results of the current study imply that sit to stand training combined with ultrasound is a beneficial and effective therapeutic modality that can be employed to improve the spasticity, muscle strength and gait speed in stroke patients.

• PNF and Movement
• /
• 제21권2호
• /
• pp.213-222
• /
• 2023

Purpose: The purpose of this study was to investigate the effects of heel-raise-lower with Kinesio Taping (HKT) on spasticity and balance ability in patients with chronic strokes. Methods: The participants were divided randomly into the HKT group and heel-raise-lower with sham (control group), with 38 participants assigned to each group. Both groups received heel-raise-lower lifting 100 times, 5 times/week for 4 weeks. The HKT group applied Kinesio Taping to the calf muscles. The control group applied Kinesio Taping transversely to the ankle joint and tibialis anterior muscle. The composite spasticity score was used to evaluate the ankle plantar flexors. The center of pressure with the eyes open and closed and limited stability was measured using BioRescue equipment. Both groups evaluated spasticity and balance ability before the experiment and after 4 weeks. Statistical methods before and after working around spasticity and balance ability were independent t-tests. Results: After training, spasticity showed significant improvement in the HKT group and in the control group (p < 0.05). Similarly, balance ability was significantly more improved in the HKT group after 4 weeks of training compared to the control group (p < 0.05). Conclusion: We confirmed the effects of heel-raise-lower with Kinesio Taping (HKT) on spasticity and balance ability in patients with chronic strokes.