Cardiorespiratory fitness is positively associated with both healthy and western dietary pattern in Iranian middle-aged.

IF 2 4区 医学 Q3 NUTRITION & DIETETICS
Hossein Shahinfar, Farhang Djafari, Nadia Babaei, Samira Davarzani, Mojdeh Ebaditabar, Cain C T Clark, Kurosh Djafarian, Hossein Imani, Sakineh Shab-Bidar
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Abstract

Background: The association between dietary patterns and cardiorespiratory fitness (CRF) is not well established. Objective: We sought to investigate association between a posteriori dietary pattern and CRF in middle-aged adults. Design: Adults (n = 276), aged 20-74 years, who were residents of Tehran, Iran were recruited. Diet was assessed by using a validated 168-item semi-quantitative food frequency questionnaire. Principal component analysis was used to derive dietary patterns. Socio-economic status, anthropometric measures, body composition, and blood pressure were recorded. CRF was assessed by using a graded exercise treadmill test. Analysis of variance and linear regression models were used to discern the association between dietary patterns and CRF. Results: Higher scores of the healthy dietary pattern had no association with VO2max (p = 0.13). After controlling for potential confounders, VO2max was positively associated across tertiles of healthy dietary patterns (p < 0.001). Higher adherence to the "mixed" dietary pattern was inversely related to VO2max (p < 0.01). After adjusting for confounders, the significant association disappeared (p = 0.14). Higher scores of the "Western" dietary pattern was not associated with VO2max (p = 0.06). However, after controlling for potential confounders, VO2max was positively associated with the "Western" dietary pattern (p = 0.01). A positive linear association between the "healthy" dietary pattern and CRF for the total sample (R2 = 0.02; p < 0.01) were presented. Conclusions: Overall, our findings suggest that higher adherence to a "healthy" and "Western" dietary pattern was positively associated with CRF. However, further studies are required to examine and clarify the causal relationship between dietary patterns and CRF.

伊朗中年人的心肺健康与健康饮食和西方饮食模式呈正相关。
背景:饮食模式与心肺功能(CRF)之间的关系尚不明确。目的:我们试图研究中年人的后天饮食模式与CRF之间的关系。设计:招募年龄在20-74岁的伊朗德黑兰居民成人(n = 276)。饮食评估采用经验证的168项半定量食物频率问卷。主成分分析用于推导饮食模式。记录社会经济地位、人体测量、身体成分和血压。CRF采用分级运动跑步机测试进行评估。采用方差分析和线性回归模型分析饮食模式与CRF之间的关系。结果:健康饮食模式得分越高,与最大摄氧量无相关性(p = 0.13)。在控制了潜在的混杂因素后,VO2max在健康饮食模式的各分位数之间呈正相关(p = 0.06)。然而,在控制了潜在的混杂因素后,VO2max与“西方”饮食模式呈正相关(p = 0.01)。“健康”饮食模式与总样本的CRF呈线性正相关(R2 = 0.02;结论:总体而言,我们的研究结果表明,坚持“健康”和“西方”饮食模式与CRF呈正相关。然而,需要进一步的研究来检查和澄清饮食模式与CRF之间的因果关系。
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来源期刊
CiteScore
5.00
自引率
4.30%
发文量
53
审稿时长
>12 weeks
期刊介绍: Since 1930 this journal has provided an important international forum for scientific advances in the study of nutrition and vitamins. Widely read by academicians as well as scientists working in major governmental and corporate laboratories throughout the world, this publication presents work dealing with basic as well as applied topics in the field of micronutrients, macronutrients, and non-nutrients such as secondary plant compounds. The editorial and advisory boards include many of the leading persons currently working in this area. The journal is of particular interest to: - Nutritionists - Vitaminologists - Biochemists - Physicians - Engineers of human and animal nutrition - Food scientists
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