균형 경사형 신발이 임산부의 보행과 족저압에 미치는 효과
The effect of balanced incline shoes on walking and feet for the pregnant women
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목적: 본 연구는 균형 경사형 신발이 임산부의 안정된 보행, 피로 감소, 혈액순환 개선, 그리고 발 관련 질병에 미치는 효과를 조사하였다. 연구 방법: 병력이 없는 임신 7~9개월의 임산부 7명과 출산 후 3개월 이내의 산모 3명을 대상으로 각각 평면형 신발과 균형 경사형 신발을 착용하고 보행 실험을 실시하였다. 3차원 동작분석, 족저압력측정, 그리고 혈류속도에 대한 두 가지 보행 조건하의 실험이 통계적으로 조사되었고, 일원분산분석 방식의 통계방법을 사용하였다. 결과: 10명의 피험자 중 오류 데이터를 제외한 9명에 대하여 보행 시 균형 경사형 신발이 평면형 신발에 비해 평균 6 mm 정도 무릎을 안쪽으로 모아주어 신발에 따른 무릎 사이 거리의 변화 특성에 유의한 차이가 있었다(P<0.05). 균형 경사형 신발이 평면형 신발에 비해 전체적인 압력의 크기를 15% 정도 감소시켜 주고, 발꿈치에 집중되었던 압력이 발바닥 홈 외측 부위로 분산되어 압력 분포 특성에서도 유의한 차이가 있었다(P<0.05). 혈류속도는 9명의 피험자 전체가 착화 전에는 C (200~400 µm/sec)나 D (100~200 µm/sec) 구간에 속하였지만 균형 경사형 신발을 착용한 후에는 A (>600 µm/sec)와 B (400~600 µm/sec) 구간으로 1~2구간 개선되는 경향이 있었다. 결론: 균형 경사형 신발은 자세를 바르게 하고, 보행자세를 안정화시키고, 과도한 발목의 부하를 줄이고, 피로를 감소시키며, 혈액순환을 개선하는 효과를 나타내었다.
Abstract
Objective: This study investigated the effects of the balanced incline shoes on the stabilized walking, fatigue reduction, improvement of blood circulation and prevention of foot related disease for the pregnant women. Methods: The seven 7~9 month pregnant women and three maternities within 3 months after delivery without a history of disease performed the cycles for each of the two walking conditions: wearing balanced incline shoes and flat shoes. The differences between the two walking conditions were statistically investigated including three dimensional motion analysis, footprint pressures and blood flow. To find out any possible difference between these two kinds and among the subjects, the statistical tool was utilized with one-way layout design. Results: Of 10 subjects, seven subjects showed the significantly decreased in distance of both knee with balanced incline shoes than flat shoes (P<0.05). Those with the balanced incline shoes had a walking pattern whose knee moved inward about 6 mm, compared to those with the flat regular ones. Over plantar pressure measurements for all ten, it also revealed statistically significant differences that the balanced incline shoes decreased its pressure 15% and that the pressure heavily on heel area was distributed outward along the arch (P<0.05). The blood stream velocity belonged to C (200~300 µm/sec) or D (100~200 µm/sec) for the nine before wearing the balanced incline shoes. However, it was found to be enhanced in A (>600 µm/sec) or B (400~600 µm/sec) after they put them on, indicating 1~2 part equivalent improvement. The blood stream velocity showed a incremental tendency after wearing balanced incline shoes. Conclusion: This result suggests that the balanced incline shoes corrected the postures, stabilized the gait pattern, decreased the excessive load on ankle plantar flexors, reduced the fatigue level and improved the blood circulation.
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