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The Relations of Objectively Measured Physical Activity and Fitness to Cognitive Impairment in Older Adults: 276 Board #114 May 28, 1100 AM - 1230 PM

Jin, Youngyun1; Lee, Inhwan1; Kong, Jiyoung1; Park, Junghwan1; Song, Moongoo1; Woo, Sangkoo2; Kang, Hyunsik1

Medicine & Science in Sports & Exercise: May 2014 - Volume 46 - Issue 5S - p 64
doi: 10.1249/01.mss.0000493361.13889.2f
A-38 Exercise is Medicine/Poster - EIM Across the Lifespan Wednesday, May 28, 2014, 7:30 AM - 12:30 PM Room: WB1

1Sungkynkwan unive., Gyeounggi-do, Korea, Republic of. 2Andong national unive., Gyeoungbuk, Korea, Republic of.

(No relationships reported)

PURPOSE: To investigate the associations between lifestyle factors and cognitive function in a sample of older adults (aged 60 to 89 years) in Korea.

METHODS: In a cross-sectional design, older community dwellers (21 men and 96 women) completed body composition assessment and senior fitness test (i.e., strength, endurance, flexibility and agility), mini-mental state examination (MMSE) for cognitive function (Am J Psychiatry 1982, 139, 1136-9), 7-d physical activity (PA) monitoring with Kenz Lifecorder® accelerometers, and several of metabolic risk factors including blood glucose and lipids and vitamin D. The subjects were classified as inactive group (lower 25%) (ING), moderately active group (middle 50%) (MAG), and highly active group (upper 25%) (HAG) based on the distribution of daily PA volume (steps/day).

RESULTS: The Kruskal-Wallis tests for linear trends showed significant decreases in age (ING 78.5±5.0 vs. MAG 75.3±6.4 vs. HAG 71.3 yrs, p<.001), serum vitamin D (ING 20.1±8.6 vs. MAG 20.6±7.1 vs. HAG 25.0±9.6 ng/mL, p=.046) and MMSE score (ING 19.2±4.8 vs. MAG 24.6±3.4 vs. HAG 26.2±2.3, p<0.001) across the incremental PA levels. There were also significant linear increases in strength (p=.001), endurance (p=.001), and upper body flexibility (p=.007), and agility (p=.001) across the incremental PA levels. Regression analyses showed that sex (beta=-0.249, SE=0.765, p<.001), body mass index (beta=0.205, SE=0.099, p=.003), accelerometer-based PA (beta=0.314, SE=0.001, p=.004) and agility (beta=0.459, SE=0.010, p<.001) were significantly and independently associated with MMSE score in this study sample.

CONCLUSION: The findings of the study suggest that physical activity and fitness promotion along with a healthy diet should be a key component of lifestyle interventions against cognitive decline in Korean older adults.

This study was supported by the Korean Government Research Foundation funded by the Korean Government (NRF-2013S1A2A2034953).

© 2014 American College of Sports Medicine