歩行心拍数変動の遺伝性について
Nina H M Kupper1, Gonneke Willemsen, Mireille van den Berg
1Vrije Universiteit, Amsterdam, The Netherlands. hm.kupper@psy.vu.nl
Circulation
|October 20, 2004
まとめ
心拍の変動性 (HRV) は遺伝性が高い. 遺伝的要因は,循環器内HRVの変動の35-48%を説明し,心臓血管疾患の遺伝的研究におけるその有用性を示唆しています.
科学分野:
- 心血管生理学 心血管の生理学
- 行動遺伝学 行動遺伝学
背景:
- 心拍数変動率 (HRV) の低下は,心疾患と死亡率を予測する.
- HRVの変動源を理解することで,診断と予防を改善することができます.
- 自然主義的な外来モニタリングにおけるHRVに対する遺伝的および環境的貢献は,まだ十分に研究されていない.
研究 の 目的:
- 循環器内心拍数変動の遺伝性を調査する.
- 長期のモニタリング中にHRVへの遺伝的および環境的貢献を定量化するために.
主な方法:
- 772人の健康な双生児と兄弟姉妹の24時間間にわたって行診心電図 (ECG) の記録.
- タイム・ドメイン HRV 測定値の分析: SDNN インデックスとRMSSD.
- 異なる昼間の期間における多変量遺伝分析.
主要な成果:
- 平均的な ambulatory SDNN インデックス (35-47%) と RMSSD (40-48%) に有意な遺伝的貢献.
- 遺伝可能性の推定値は,昼間の期間によって異なっていた.
- HRVの個々の差異は,遺伝的要因によって大きく影響されます.
結論:
- 歩行型HRV対策は,遺伝性が高い.
- これらの発見は,遺伝的関連性および関連性研究におけるHRVの使用を支持しています.
- HRVの遺伝性は,心血管疾患のリスクに影響を与える遺伝的変異の洞察を提供します.
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