낙상 및 치매 위험 통합 보행연령척도 개발: 스마트스텝 기반 이중과제 스텝 패턴 분석을 중심으로
Development of an Integrated Gait Age Scale for Fall and Dementia Risk : Focusing on Dual-Task Step Pattern Analysis Based on Smart Step
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This study developed an integrated gait age scale to predict fall risk and cognitive decline in older adults using dual-task step pattern analysis with a Smart Step mat system. A cross-sectional study was conducted with 165 community-dwelling older adults (mean age 74.8±6.9 years). Participants performed three levels of step pattern tasks under single and dual-task conditions. Principal component analysis extracted "fall risk factor" (42.4% variance) and "cognitive function factor" (30.1%). Gender-specific scales revealed that for males, fall risk model (R ²=.72) included step errors, fall history, TUG, and dual-task cost, while dementia risk model (R ²=.68) included word generation, calculation errors, and DTC. For females, fall risk model (R ²=.70) included step errors, fall history, TUG, and one-leg standing, while dementia risk model (R ²=.62) included word generation and calculation errors. When integrated gait age exceeded chronological age by 5+ years, sensitivity and specificity were 86.7% and 79.5% for fall prediction (AUC=.88), and 84.2% and 77.3% for cognitive impairment prediction (AUC=.85). The scale showed excellent reliability (ICC=.87-.92) and offers a practical tool for early identification of older adults at risk.
Abstract
This study developed an integrated gait age scale to predict fall risk and cognitive decline in older adults using dual-task step pattern analysis with a Smart Step mat system. A cross-sectional study was conducted with 165 community-dwelling older adults (mean age 74.8±6.9 years). Participants performed three levels of step pattern tasks under single and dual-task conditions. Principal component analysis extracted "fall risk factor" (42.4% variance) and "cognitive function factor" (30.1%). Gender-specific scales revealed that for males, fall risk model (R ²=.72) included step errors, fall history, TUG, and dual-task cost, while dementia risk model (R ²=.68) included word generation, calculation errors, and DTC. For females, fall risk model (R ²=.70) included step errors, fall history, TUG, and one-leg standing, while dementia risk model (R ²=.62) included word generation and calculation errors. When integrated gait age exceeded chronological age by 5+ years, sensitivity and specificity were 86.7% and 79.5% for fall prediction (AUC=.88), and 84.2% and 77.3% for cognitive impairment prediction (AUC=.85). The scale showed excellent reliability (ICC=.87-.92) and offers a practical tool for early identification of older adults at risk.