The association between dietary antioxidant quality score and cardiorespiratory fitness in Iranian adults: a cross-sectional study

Hossein Shahinfar , Mahshid Shahavandi, Aliyu Tijani, Kurosh Djafarian, Cain Clark, Sakineh Shab-Bidar

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Abstract

Background: The association between dietary antioxidant quality score (DAQS) and cardiovascular risk factors such as low cardiovascular fitness (CRF) and elevated blood pressure (BP) has not been investigated.
Objectives: To investigate the association between DAQS, CRF, and blood pressure.
Methods: This cross-sectional study was conducted on 270 adult subjects living in Tehran, Iran. Dietary intake was evaluated using a validated food frequency questionnaire (FFQ). The dietary antioxidant quality score was calculated using antioxidant-nutrient intake. Socio-economic status, anthropometric measures, and blood pressure were recorded by a trained interviewer, using standard methods.
Results: A significant increase was found in VO2max (Pvalue=0.01) across tertiles of DAQs. After adjusting for confounders, the association remained unchanged (Pvalue =0.02). Participants in the highest tertile of DAQs had higher systolic blood pressure (SBP) (Pvalue=0.01) and diastolic blood pressure (DBP) (Pvalue=0.03), although adjustment for confounding factors attenuated the results (Pvalue = 0.3 for DBP and Pvalue= 0.6 for SBP).
Conclusions: Our results revealed that higher DAQs is associated with better CRF in Iranian adults. Further studies are needed to establish the veracity of our results
Original languageEnglish
Pages (from-to)171-181
Number of pages11
JournalClinical Nutrition Research
Volume9
Issue number3
Early online date21 Jul 2020
DOIs
Publication statusE-pub ahead of print - 21 Jul 2020

Bibliographical note

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords

  • Antioxidants
  • Minerals
  • ; Cardiorespiratory fitness
  • Blood pressure

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