| 제목 |
A kinematic analysis during stair climbing in frail elderly subjects |
| 소속 |
Nowon Eulji Medical Center, Eulji University, Seoul, Department of Rehabilitation Medicine1, Yonsei University College of Medicine, Seoul, Research Institute of Rehabilitation Medicine2, Electronics and Telecommunications Research Institute, Daejeon , Wearable Computing Research Section3, Yonsei University College of Medicine, Seoul, Department and Research Institute of Rehabilitation Medicine4 |
| 저자 |
Hyo Seon Choi1*, So Young Park2, Sun Mi Lee2, Yejin Jo2, Hyung Cheol Shin3, Joonyoung Jung3, Ju Sun Kim4, Deog Young Kim4† |
Introduction: With aging and frailty, the deterioration of the ability to climb stairs constitutes a major source of disability and a factor contributing to the loss of autonomy. The aim of this study was to investigate the kinematic characteristics of stair climbing in frail elderly.
Methods: Fifteen frail elderly subjects and fifteen young adult controls were recruited for this experiment. The frailty was defined as ≥3/5 on the Korean version of the FRAIL (K-FRAIL) scale. The all subjects underwent three-dimensional motion analysis (VICON MX-T10 Motion Analysis System) during stair ascent with laboratory three steps staircase. The kinematic and the spatiotemporal parameters were compared between groups using the independent t-test.
Results: In the sagittal plane, the frail elderly group presented greater anterior pelvic tilt angles than the young adult group during stair climbing (p<0.05). Compared to the young adult group, the frail elderly group demonstrated greater hip flexion angle at initial contact, less maximal hip extension angle in the stance phase, and greater maximal hip flexion angle during swing phase (p<0.05). The frail elderly group also demonstrated smaller knee flexion and ankle dorsiflexion angles than the young adult group at initial contact (p<0.05). In the coronal plane, the frail elderly group demonstrated less maximal pelvic upward obliquity and greater maximal knee varus angles than the young adult group during stair climbing (p<0.05). In the transverse plane, the frail elderly group presented greater maximal hip internal rotation and external rotation angles than the young adult group during stair climbing (p<0.05) (Table 1). Spatiotemporal characteristics of frail elderly group showed decreased cadence and velocity, and increased stride time and stance time ratio compared to young adult group (p<0.05) (Table 2).
Conclusion: The results showed that frail elderly subjects had the different kinematic alterations in the pelvis, hip, knee, and ankle compared to young adults during stair climbing. This study provides data for use in basic research into safe gait on stairs for frail elderly people.
ACKNOWLEDGMENTS
This work was supported by the ICT R&D program of MSIT/ IITP [2017-0-00050, Development of Human Enhancement Technology for auditory and muscle support |
|
Table 1. Comparison of kinematic variables between frail elderly subjects and young adults in stair climbing
Table 2. Comparison of spatiotemporal variables between frail elderly subjects and young adults in stair climbing
|
