9歳から15歳までの中等から激しい身体活動
Philip R Nader1, Robert H Bradley, Renate M Houts
1Department of Pediatrics, University of California San Diego, 9500 Gilman Dr, La Jolla, CA 92093-0927, USA. pnader@ucsd.edu
JAMA
|July 18, 2008
まとめ
子供の頃の身体活動は9歳から15歳までに著しく低下する. 15歳までに,若者は1日1時間未満の中度から激しい身体活動 (MVPA) を行い,公衆衛生上の重大な懸念を強調しています.
科学分野:
- 小児科は小児科です.
- 公衆衛生は公衆衛生である.
- 運動科学は運動科学である.
背景:
- 幼児の肥満は,身体活動のレベル低下と強く結びついている,ますます懸念される問題です.
- 現在の推奨では,若者向けに少なくとも60分間,毎日中等から激しい身体活動 (MVPA) を行うことを推奨しています.
- 子どもや青少年における最近の身体活動パターンに関する縦断的なデータは限られている.
研究 の 目的:
- 若者の中等から激しい身体活動 (MVPA) のパターンと要因を分析する.
- 代表的な出生コホートで9歳から15歳までのMVPAのトレンドを追跡する.
主な方法:
- NICHDの幼児保育と若年発達出生コホートに関する研究から1,032人の参加者を対象とした縦断的な記述分析.
- アクセレロメーターで測定されたMVPAは,9,11,12,15歳の年齢で測定されました.
- データには,人口統計情報と4〜7日の毎日の活動モニタリングが含まれていました.
主要な成果:
- 9歳の子どもたちは,平均して毎日約3時間MVPAを服用していました.
- 年間37分,平日39分,週末39分という大幅な減少が見られた.
- 15歳までに,平日のMVPAは50分,週末のMVPAは36分に減りました.
- 男の子は女の子よりもMVPAが高く見られたが,減少率は男女ともに同様であった.
- 女の子は13.2歳 (平日) と12.7歳 (週末) の頃にMVPPAの60分未満に落ち,男の子は後でこの値に達した (それぞれ14.9歳と13.6歳).
結論:
- 若者における測定された身体活動レベルは,9歳から15歳の間に著しく低下する.
- 研究コーホートの青年は,15歳までに推奨される1日のMVPAガイドラインを満たさなかった.
- これらの発見は,子どもと青少年における持続的な身体活動の促進のための介入の必要性を強調しています.
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