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09.01.2020 | Original Contribution | Ausgabe 7/2020

European Journal of Nutrition 7/2020

Modest improvement in CVD risk markers in older adults following quinoa (Chenopodium quinoa Willd.) consumption: a randomized-controlled crossover study with a novel food product

Zeitschrift:
European Journal of Nutrition > Ausgabe 7/2020
Autoren:
L. Kirsty Pourshahidi, Eduardo Caballero, Alejandro Osses, Barry W. Hyland, Nigel G. Ternan, Chris I. R. Gill
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s00394-019-02169-0) contains supplementary material, which is available to authorized users.

Abstract

Purpose

To investigate the effect of consuming quinoa biscuits on markers of CVD risk over 4 weeks in free-living older adults.

Methods

A randomized-controlled, double-blind crossover trial was conducted in which consenting healthy adults aged 50–75 years (n = 40) consumed 15 g quinoa biscuits (60 g quinoa flour/100 g) or control iso–energetic biscuits (made using wheat flour) daily for 28 consecutive days (4 weeks), in addition to their normal diet. Following a 6-week washout, participants consumed the alternate biscuit for a final 4 weeks. Anthropometry and fasted blood samples were obtained before and after each intervention period.

Results

At the beginning of the trial, mean ± SD total cholesterol concentrations were 6.02 ± 1.22 mmol/L (3.7–9.2 mmol/L); 33 participants (82.5%) had high cholesterol (> 5 mmol/L). No participants were lost to follow-up and there were no changes in habitual dietary intakes or levels of physical activity between each 4-week intervention period. Significantly greater decreases in total and LDL cholesterol concentrations (− 0.30 ± 0.58 and − 0.25 ± 0.38 mmol/L, respectively), TC: HDL ratio (− 0.11 ± 0.30), weight (− 0.61 ± 0.89 kg) and BMI (− 0.22 ± 0.34 kg/m2) were apparent following consumption of the quinoa versus control biscuits (all P < 0.05). Changes in triglycerides, HDL cholesterol, or PUFA or CRP concentrations were not significant between treatment groups.

Conclusion

Consumption of novel quinoa biscuits produced small, but favorable changes in body weight, BMI, and circulating cholesterol concentrations, all of which may contribute to lowered CVD risk in older adults.

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