2013 Fiscal Year Final Research Report

Association between daily physical activity and immunological function in older individuals

Research Project

Project/Area Number	24700773
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Applied health science
Research Institution	Okayama Prefectural University (2013) 地方独立行政法人東京都健康長寿医療センター(東京都健康長寿医療センター研究所) (2012)
Principal Investigator	AYABE MAKOTO 岡山県立大学, 情報工学部, 准教授 (80407238)
Project Period (FY)	2012-04-01 – 2014-03-31
Keywords	スポーツ免疫学
Research Abstract	The purpose of the present investigation was to examine the optimal levels and timings of daily physical activity to maintain immunological function in older individuals. All subjects were independently living. In order to assess the number of steps and the time for moderate to vigorous intensity physical activity, all subjects wore a pedometer with one-axial accelerometer (Lifecorder, Kenz, Nagoya) continuously for 1 year. We assessed the salivary secretory immunoglobulin A and the neutrophil phagocytosis function at the resting condition. As results, the neutrophil phagocytosis function significantly associated with the number of step counts (p<0.05). The salivary secretory immunoglobulin A significantly associated with both the number of step counts and the time for moderate to vigorous intensity physical activity (p<0.05). These results indicate that the habitual physical activity have important role to maintain the immunological functions in older individuals.

(4 results)