[논문]Effects of Different Shoe Heel Heights on the Kinematic Variables of the Lower Extremities during Walking on Slopes by healthy adult women

Yang, Yong-pil

doi:10.13066/kspm.2019.14.3.21

[국내논문] Effects of Different Shoe Heel Heights on the Kinematic Variables of the Lower Extremities during Walking on Slopes by healthy adult women 원문보기

대한물리의학회지 = Journal of the korean society of physical medicine, v.14 no.3, 2019년, pp.21 - 27

Yang, Yong-pil (Department of Physical Therapy, Dongshin University)

Abstract ▼ AI-Helper

PURPOSE: This study examined the changes in the kinematic variables during walking on a downhill ramp according to the shoe heel height. METHODS: The subjects were 10 adult women with no history of musculoskeletal disorders who agreed to participate in the study. Data were collected using a motion analysis system (VICON) consisting of six infrared cameras. The slope was 120 cm in width, 200 cm in length, and 15 in inclination. To confirm the change in gait parameters (stride length, gait speed) and lower extremity joint angle according to the heel heights of the shoes, flat, 5 cm, and 10 cm heel shoes were prepared and walked alternately. RESULTS: As a result, both the stride length and walking speed showed significant differences according to the heel height between flat and 10 cm (p<.05). In the sagittal plane, there was no significant difference in the hip joint and knee joint, but a significant difference was observed in all events in the ankle joint on all heel heights (p<.05). In particular, the heel strike and mid stance events showed significant differences among all height conditions (p.05). CONCLUSION: As the shoe heel height increased, the instability increased and efforts to secure the stability were made, leading to a shortened stride length, walking speed, and angle of the ankle joint.

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문제 정의

This study examined the changes in the gait parameters and the change in the lower extremity angle by three - dimensional motion analysis.

제안 방법

To identify the change in walking by varying the heel heights, the subjects walked on a slope under three shoe conditions: without heels (flats), 5 ㎝ heels, and 10 ㎝ heels. According to the shoe heights, shoes were selected according to their shoe size and adjusted for 10 minutes to allow for natural walking.
, Armonk, NY, USA). In this study, the dependent variables were the gait variable and lower extremity angle. In addition, the independent variable was the shoe heel height.
The subjects walked down a ramp at varied heel heights (flat, 5 ㎝, and 10 ㎝). In previous studies, where the walking kinematics were investigated when walking on a slope, the step lengths tended to decrease with increasing angle of walking in the ascending and descending slopes [11,13].
This study also examined the angle changes of the lower extremity joints in the sagittal and frontal planes according to the heel heights at heel strike, mid stance, heel off, and toe off during downhill walking. First, in the sagittal plane, the flexion angle and extension angles did not show any significant difference at heel strike, mid stance, heel off, or toe off due to the varied heel heights at the hip joint and knee joint.
This study examined the kinematic changes when walking on a downhill ramp in high-heeled shoes with a varied heel heights (flat, 5 ㎝, and 10 ㎝). As a result, there were significant effects on the movement of the ankle joints in the sagittal plane.

대상 데이터

The kinematic data were collected using a motion analysis system (VICON MX-F20, Oxford Metrics Ltd, Oxford, UK) consisting of six infrared cameras installed in the H-university motion analysis room at 120 ㎐. A Woltering filtering method was used to filter the data and the mean squared error (MSE) was set to 15.

데이터처리

One-way ANOVA with a Bonferroni’s correction was used to determine the difference among the shoe heel heights.

성능/효과

This study also examined the angle changes of the lower extremity joints in the sagittal and frontal planes according to the heel heights at heel strike, mid stance, heel off, and toe off during downhill walking. First, in the sagittal plane, the flexion angle and extension angles did not show any significant difference at heel strike, mid stance, heel off, or toe off due to the varied heel heights at the hip joint and knee joint. At the ankle joint, however, a significant difference with varied heel heights was observed in all events.

후속연구

Although the standardized high heel was applied, it appeared to have affected walking because of personal inconvenience. In future studies, it would be necessary to complement these points and identify the kinematic variables together to determine the coordination and load of the lower limb joints.

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