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過体重の人々における適応型マルチコンパートメントモデルに対する体組成技術の比較
Julia Montenegro1, Jonathan P Bennett2, Camila L P Oliveira1
1Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
Nutrition (Burbank, Los Angeles County, Calif.)
|December 31, 2025
まとめ
空気変位体墨量測定法(ADP)は、過体重および肥満の個人において体脂肪率の精度が最も高かったが、BMIが高いと精度が低下した。変動の可能性があるため、個々の評価には注意が必要である。
科学分野:
- 肥満研究
- ヒト生理学
- 生体医工学
背景:
- 正確な体組成評価は、過剰な脂肪沈着に関連する健康リスクを特定するために不可欠である。
- 従来の測定技術は、ボディマス指数(BMI)が高い個人では精度が低下することがよくある。
研究 の 目的:
- 過体重または肥満の個人における4コンパートメント(4C)モデルに対する一般的な体組成技術の精度を評価すること。
- この集団における空気変位体墨量測定法(ADP)、生体電気インピーダンス分析(BIA)、および二重エネルギーX線吸収測定法(DXA)を比較すること。
主な方法:
- 過体重または肥満(BMI 25-30+ kg/m²)の75人の参加者がADP、BIA、およびDXAによって評価を受けた。
- 4Cモデルは、体重、体積(ADP)、骨量(DXA)、および総体水分量(BIA)を使用して適合された。
- 精度は、4Cモデルに対する平均差および95%信頼限界によって決定された。
主要な成果:
- ADPは体脂肪率(BF%)の平均差が最も小さかった(0.10% ± 1.70%)が、肥満の個人では精度が低下した。BIA(1.73% ± 1.72%)とDXA(1.86% ± 1.79%)は、4Cモデルと比較してBF%を有意に過大評価した(P < 0.001)。
結論:
- 空気変位体墨量測定法(ADP)は、このコホートにおける体脂肪率の全体的な精度が最も高いことを示した。
- 二重エネルギーX線吸収測定法(DXA)は、BIAによる総体水分量の過大評価により、4Cモデルからのずれが最も大きかった。
- 集団レベルでの一致は強かったが、個々のレベルでの有意なばらつきは、過体重の個人に対する臨床応用において注意が必要であることを示唆している。
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