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Usefulness of the physical fitness test for screening cognitive impairment in the Korean elderly
Author(s) -
Choi Muncheong,
Chun BuongO,
Moon So Young,
Lee Sun Min,
Sun Kyunghwa,
Jeong Jee Hyang,
Park Hee Kyung,
Park Yoo Kyoung,
Hong Chang Hyung,
Na Hae Ri,
Park KyungWon,
Kim ByeongChae,
Cho Soo Hyun,
Choi Seong Hye,
Song HongSun
Publication year - 2020
Publication title -
alzheimer's and dementia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.713
H-Index - 118
eISSN - 1552-5279
pISSN - 1552-5260
DOI - 10.1002/alz.040650
Subject(s) - repeatable battery for the assessment of neuropsychological status , bioelectrical impedance analysis , physical fitness , physical therapy , dementia , clinical dementia rating , grip strength , cognition , physical medicine and rehabilitation , medicine , timed up and go test , receiver operating characteristic , trail making test , neuropsychological test , psychology , gerontology , cognitive impairment , body mass index , neuropsychology , psychiatry , balance (ability) , disease
Background Physical performance as well as cognitive function decline as people are getting older. We aimed to evaluate usefulness of physical fitness measures for screening cognitive impairment in Korean elders. Method A total of 88 not‐demented individuals (Female: 80.0%, age: 70.6±5.1 yrs, Clinical Dementia Rating (CDR): 0(33%), 0.5(67%), Body Mass Index: 24.2±2.9 kg/m 2 )were recruited. Their physical fitness was assessed by grip power, sit‐to‐stand for 30 seconds, walking in place for 2 minutes, bending the upper body forward, standing on one foot while lifting the other knee up, 3m timed‐up‐and‐go (TUG), fast walking on an “8”‐ shaped trajectory (F8WT), T‐wall test and bioelectrical impedance analysis. In addition, their cognitive function was evaluated by Mini‐Mental State Examination (MMSE) and Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). Correlation analysis was conducted to analyze the association between physical fitness and cognitive function. The receiver operating characteristic (ROC) analysis was applied to reveal diagnostic accuracy and optimal cutoff of each physical fitness test for cognitive impairment which was defined as CDR 0.5. Result In T‐wall test, time taken for 100 hits was negatively correlated with MMSE total score ( r =‐0.497) and RBANS total score ( r =‐0.532). The time taken for F8WT was significantly correlated with MMSE ( r =‐0.405). F8WT, TUG, as well as T‐wall test showed large Area under the curve for defining cognitive impairment (TUG=.768, 95%CI= .650∼.885; F8WT=.735, 95%CI=.612∼.857; T‐wall=.682, 95%CI=.545∼.819). The optimal cut‐off to predict cognitive impairment was 6.0 sec in TUG (sensitivity=73.2%, specificity=73.1%), 26.3 sec in F8WT (sensitivity=71.4%, specificity=73.1%) and 94.5 sec in T‐wall test (sensitivity=62.5%, specificity=65.4%). Conclusion F8WT, TUG, as well as T‐wall test were found to be accurate and portable measures for screening cognitive impairment in Korean elders, and may be particularly useful for screening cognitive impairment in elderly populations with wide variation in educational levels.