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Ann Geriatr Med Res > Volume 15(2); 2011 > Article
Journal of the Korean Geriatrics Society 2011;15(2):90-98.
DOI: https://doi.org/10.4235/jkgs.2011.15.2.90    Published online June 30, 2011.
Relationship between Physical Activity and Cognitive Function in the Elderly
Jae Seok Seo, Sang Hyun Koh, Yunhwan Lee, Joung Hwan Back, Jai Sung Noh, Hyun Chung Kim, Chang Hyung Hong
1Department of Psychiatry, Ajou University School of Medicine, Suwon, Korea. antiaging@ajou.ac.kr
2Institute on Aging, Ajou University Medical Center, Suwon, Korea.
3Department of Preventive Medicine and Public Health, Ajou University School of Medicine, Suwon, Korea.
4Department of Psychiatry, National Medical Center, Seoul, Korea.
5Memory Impairment Center, Ajou University Medical Center, Suwon, Korea.
지역사회 노인의 신체활동과 인지기능의 연관성
서재석1,고상현1,이윤환2,3,백종환2,3,노재성1,김현정4,홍창형1,2,5
Abstract
BACKGROUND
Physical activity is considered an effective non-pharmaceutical preventive measure against cognitive impairment. This study was designed to investigate the correlation between physical activity and cognitive function.
METHODS
Subjects were recruited from the Suwon Project, a cohort comprising a nonrandom convenience sample of ethnic Koreans aged 60 years or older. All participants completed study questionnaires which included questions about demographic characteristics, current and/or past medical history, and drug history. Cognitive functions were evaluated using the Korean version of Mini-Mental State Examination (K-MMSE), Korean version of Short Form Geriatric Depression Scale and Beck Anxiety Inventory. The total time spent to complete 10 physical activities was recorded on a daily basis.
RESULTS
The total amount of time spent to execute 10 physical activities was 91.9+/-98.9 minutes per day. K-MMSE score was significantly associated with the duration of physical activity after adjustment for age, sex, educational level, depression, anxiety, and underlying diseases using multiple logistic regression analysis (beta=0.002, p<0.05). Categorizing physical activities into three groups by intensity yielded an interesting result; moderate intensity group demonstrated a direct correlation with cognitive function (beta=0.002, p<0.05).
CONCLUSION
Although much remains to be elucidated, our results suggest that physical activity may be associated with cognitive function, after controlling for covariates.
Key Words: Physical activity, Cognition, Elderly


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