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Physical Activity and Immune Senescene in Men

Research Project

Project/Area Number 05670352
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Public health/Health science
Research InstitutionEhime University

Principal Investigator

SHINKAI Shoji  Ehime University, Associate Professor, 医学部, 助教授 (60171063)

Co-Investigator(Kenkyū-buntansha) FUJIMOTO Koichiro  Ehime University, Assistant Professor, 医学部, 助手 (30243778)
KOHNO Hideaki  Ehime Universitry, Assistant Professor, 医学部, 助手 (40195673)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1994: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1993: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsHabitual endurance exercise / Immune function / Aging / Lymphocyte / T cell / NK cell / Cytokine
Research Abstract

A cross-sectional survey examined whether habitual endurance exercisers retained a higher level of T cell function than sedentary individuals in old age. Subjects, all male, comprised 17 elderly runners, 16 young controls and 19 elderly controls (mean ages <plus-minus> SD : 63.8 <plus-minus> 3.3,23.6 <plus-minus> 1.6, and 65.8 <plus-minus> 3.5, yr, respectively) . Samples of peripheral blood were collected at least 36 h after exercise. Group comparisons were made on data from non-smokeres only, using one-way ANOVA and a Bonferroni adjustment for post-hoc multiple comparisons. Lymphocyte functions were assessed as adjusted activity per major responding cell as well as the usual unadjusted activity. In comparison wtih the young subjects, both elderly groups had lower circulating CD3^+ and CD8^+ counts (group effects : P=.029, P=.001, respectively) , with a trend to a higher CD4/CD8 ratio, but higher percentages of activated CD3^+, and "memory" CD4^+ and CD8^+ cells (all, P<.001) . Prolif … More erative responses to phytohemagglutinin (PHA) , pokeweed mitogen (PWM) and alloantigens (mixed lymphocyte reaction) were markedly reduced in the elderly (for unadjusted activities, P<.001, P<.001 and P=.024, respectively). IL-2 production tended to be decreased in the elderly sedentary subjects (P=.058 vs young subjects) . However, natural killer cell activity was not impaired, and IL-1beta, IFN-gamma and IL-4 production remained unchanged in the elderly sedentary subjects. Comparison between the active and sedentary elderly groups showed no differences in circulating counts of immunocompetent cells. However, the active elderly subjects demonstrated significantly greater proliferative responses to PHA (P=.016 for unadjusted and P=.034 for adjusted activity) , and to PWM(P=.011 and P=.040, respectively) , and higher rates of IL-2 (P=.021), IFN-gamma (P=.015) and IL-4 production (P=.012) . These results suggest that endurance training in later life is associated with a lesser age-related decline in certain aspects of circulating T cell function and related cytokine production. Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 新開 省二: "身体運動は加齢に伴う免疫能の低下をどの程度防ぐか" 体力研究. No.85. 47-56 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 新開 省二: "中高年期における健康・体力と栄養・運動の問題点を考える" 健康・体力・栄養. 2(1). 40-48 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shoji Shinkai: "Physical activity and immune senescence in men" Med Sci Sports Exerc. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shoji Shinkai: "Physical activity and immune senescence in men" Med Sci Sports Exerc. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shoji Shinkai: "Does physical exercise deceleratet age-related deline in human immune functions?" Bulletin of the Physical Fitness Research Institute. 85 :. 47-56 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shoji Shinkai: "Health, physical fitness, untrition, and exercise in middle-aged and elderly Japanese" Kenko-Tairyoku-Eiyo. 2 :. 40-48 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 新開省二: "身体運動は加齢に伴う免疫能の低下をどの程度防ぐか" 体力研究. No.85. 47-56 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 新開省二: "中高年期における健康・体力と栄養・運動の問題点を考える" 健康・体力・栄養. 2(1). 40-48 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Shoji Shinkai: "Physical activity and immune senescence in men" Med Sci Sports Exerc. (in press).

    • Related Report
      1994 Annual Research Report
  • [Publications] 新開省二: "身体運動は加齢に伴う免疫能の低下をどの程度防ぐか" 体力研究. No.85. 47-56 (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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