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2009 Fiscal Year Final Research Report

Relationship between the amount of daily activities and muscular development in preschool and school children

Research Project

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Project/Area Number 19500493
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical education
Research InstitutionThe University of Tokyo

Principal Investigator

KANEHISA Hiroaki  The University of Tokyo, 大学院・総合文化研究科, 教授 (50161188)

Co-Investigator(Kenkyū-buntansha) KUBO Keitaro  東京大学, 大学院・総合文化研究科, 助教 (70323459)
Project Period (FY) 2007 – 2009
Keywords幼児 / 小学生児童 / 身体活動量 / 身体活動水準 / 筋量 / 筋機能 / 運動能力 / 性差
Research Abstract

The present study aimed to investigate the influences of age and sex on the muscle size and function and motor fitness in preschool and school children, and to clarify how the amount and intensity of daily activities become factors explaining the individual differences in muscular development and motor fitness. As one of the major findings of the present study, three were no significant differences between boys and girls in muscle thickness, muscle strength and their age-related changes in preschool and school ages, but boys showed better motor performances than girls even in preschool age. A regression analysis showed that factors selected for predicting motor performances differed between boys and girls, which might be assumed to be involved as a reason for the sex-related differences in motor performances. Muscle size was more closely related to the natural growth of the whole body rather than the amount and intensity of daily activities. On the other hand, fat mass for preschool children was negatively related to the mean intensity of daily activities, suggesting that the intensity of daily activities will be a determinant factor for the magnitude of fatness in preschool age. In addition, motor performances were related to the intensity but not to the amount of daily activities, and so frequent participation in physical activities with moderate to high intensity beyond the level of normal walking may be assumed to be a factor promoting development in muscle function in preschool and school children.

  • Research Products

    (4 results)

All 2009 2008 2007

All Journal Article (1 results) Presentation (3 results)

  • [Journal Article] 生後50ヶ月から79ヶ月の幼児の皮下脂肪厚と筋厚2007

    • Author(s)
      石田良恵, 萩裕美子, 鈴木志保子, 金久博昭
    • Journal Title

      日本生理人類学会誌 Vol. 12

      Pages: 99-103

  • [Presentation] 歩行数との関連でみた幼児の運動能力および筋力における性差2009

    • Author(s)
      石田良恵, 鈴木志保子, 萩裕美子, 池川繁樹, 金久博昭
    • Organizer
      第64回日本体力医学会大会
    • Year and Date
      20090000
  • [Presentation] 幼児における身体活動量と身体組成および運動能力との関係2008

    • Author(s)
      鈴木志保子, 石田良恵, 萩裕美子, 金久博昭
    • Organizer
      第63回日本体力医学会大会
    • Year and Date
      20080000
  • [Presentation] 幼児期における身体組成、運動能力および歩行数の年間変化量2008

    • Author(s)
      石田良恵, 鈴木志保子, 萩裕美子, 金久博昭
    • Organizer
      第63回日本体力医学会大会
    • Year and Date
      20080000

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Published: 2011-06-18   Modified: 2016-04-21  

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