果蔬消费对血抗氧化剂度和血压的影响:一项随机对照试验
J H John1, S Ziebland, P Yudkin
1Division of Public Health and Primary Health Care, Department of Primary Health Care, University of Oxford, Oxford, UK
Lancet (London, England)
|June 22, 2002
概括
通过饮食干预措施增加水果和蔬菜摄入量可以显著提高抗氧化剂水平,降低成人血压. 这项研究证明了对一般人群心血管健康的长期益处.
科学领域:
- 营养科学 营养科学
- 预防性心脏病学 预防性心脏病学
- 公共卫生干预 公共卫生干预
背景情况:
- 高水果和蔬菜摄入量与降低癌症和心血管疾病 (CVD) 风险有关.
- 短期的饮食干预措施显示出有前途,但对一般人群的长期影响仍然不确定.
- 评估增加水果和蔬菜消费对关键健康标志物的影响至关重要.
研究的目的:
- 评估旨在增加水果和蔬菜消费的饮食干预措施的长期影响.
- 测量血抗氧化剂度的变化,每天摄入水果和蔬菜,以及血压.
- 为了确定一个简短的谈判方法在促进饮食改变在初级保健环境中的有效性.
主要方法:
- 一项为期6个月的随机对照试验与690名健康成年人 (25-64岁) 进行.
- 参与者从一家初级保健医疗中心招募.
- 使用简短的谈判方法,鼓励每天至少食用五份水果和蔬菜.
主要成果:
- 在干预组中观察到血度的显著增加的α-胡卜素,β-胡卜素,黄蛋白,β-卜素和酸.
- 在干预组中,自我报告的水果和蔬菜摄入量平均每天增加1.4份 (p<0.0001).
- 与对照组相比,干预组的静脉血压下降了4.0 mm Hg (p<0.0001),而静脉血压下降了1.5 mm Hg (p=0.02).
结论:
- 这种干预措施有效地增加了水果和蔬菜的消费和血抗氧化剂水平.
- 观察到的血压降低表明一般人群中心血管疾病风险降低的可能性.
- 简短的谈判方法可以成为促进健康饮食习惯的成功策略,具有显著的健康益处.
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