본 연구는 중학교 축구선수들을 대상으로 실제 경기 전후 보행 패턴의 변화를 살펴보고, 이러한 변화가 부상 위험과 어떤 관련이 있는지를 평가하는 데 목적이 있다. 경기 전/후에 따른 보행분석 결과, 보행 효율성과 관련된 지표인 PCI와 GA는 경기 후 유의하게 증가하여 보행 효율성과 대칭성이 저하되었 다. 또한, 발목 관절 운동범위 중 Dorsi/Plantar 및 Adduct/Abduct ROM이 경기 후 유의하게 감소하여, 발목 움직임이 저하되었다. 이는 반복적인 경기 활동으로 인한 피로가 발목 관절의 유연성과 기능을 저하 시킬 수 있음을 나타낸다. 이와 같은 결과는 중학교 축구선수의 경기 후 보행 패턴 변화가 발목 기능의 저 하와 밀접한 관련이 있으며, 궁극적으로 부상 위험이 증가하는 것을 의미한다. 따라서 본 연구는 청소년 축 구선수들의 부상예방을 위한 상해예방 프로그램과 경기력 관리 전략을 수립하는 데 기초자료로 활용될 수 있을 것으로 판단된다.

Background: Weakness of the trunk muscles decreases the trunk control ability of stroke patients, which is significantly related to balance and gait. Objectives: To compare the impact of diagonal pattern self-exercise on an unstable surface and a stable surface for trunk rehabilitation on trunk control, balance, and gait ability in stroke patients. Design: Nonequivalent control group design. Methods: Twenty four participants were randomized into the experimental group (diagonal pattern self-exercise while sitting on an unstable surface, n=12) and the control group (diagonal pattern self-exercise while sitting on a stable surface, n=12). All interventions were conducted for 30 minutes, three times a week for four weeks, and the trunk impairment scale (TIS), berg balance scale (BBS), functional gait assessment (FGA), and G-walk were measured. Results: All groups indicated significant increases in all variables (TIS, BBS, FGA, cadence, speed, stride length) after four weeks. The TIS, BBS, FGA, cadence, gait speed, and stride length group-by-time were significantly different between the two groups. Conclusion: We found that, in stroke patients, diagonal pattern self-exercise on an unstable surface is a more effective method for improving trunk control, balance, and gait ability than diagonal pattern self-exercise on a stable surface.

This study aimed to identify the asymmetry observed in the electromyography (EMG) activity patterns of selected trunk and thigh muscles between the affected and unaffected sides during the sit-to-stand movement in ambulatory patients with post-stroke hemiparesis. This study included 20 patients with post-stroke hemiparesis. The differences between stroke fast walkers (, 11 subjects) and stroke slow walkers (<8 m/s, 9 subjects) were compared. The activation magnitude and onset time of the multifidus, lumbar erector spinae, hamstrings, and quadriceps during the sit-to-stand movement were recorded through surface EMG. Moreover, the EMG activation magnitude and onset time ratios of each bilateral corresponding muscle from the trunk and leg were measured by dividing the relevant values of the unaffected side by those of the affected side. In all the subjects, the activation magnitudes of the multifidus, hamstring, and quadriceps on the affected side significantly decreased compared to those on the unaffected side (p<.05). The onset time of muscle activity in the affected side was markedly delayed for the multifidus and quadriceps during the task (p<.05). The activation magnitude ratios of the quadriceps were markedly decreased in the stroke slow walkers as compared to those in the stroke fast walkers. These findings indicate that the asymmetry in the multifidus, hamstring, and quadriceps muscle activation patterns in patients with post-stroke hemiparesis may be due to the excessive muscle activation in the unaffected side to compensate for the weakened muscle activity in the affected side. Our findings may provide researchers and clinicians with information that can be useful in rehabilitation therapy.