This dietary pattern did not significantly affect 2-h post-pr and ial blood glucose and Matsuda index .
Conclusions Adherence to the ND might improve serum insulin and HOMA-IR levels ; however , this effect was not confirmed for other markers of blood glucose control .
Aims Investigations on the possible effect of the Nordic diet ( ND ) on the glycemic control and the risk of diabetes have led to inconsistent results .
The present study tried to determine the effect of the ND on the markers of blood glucose control using a systematic review and meta- analysis of r and omized controlled clinical trials ( RCTs ) .
Accuracy of self-reported intake of signature foods in a school meal intervention study: comparison between control and intervention period.
Bias in self-reported dietary intake is important when evaluating the effect of dietary interventions , particularly for intervention foods . However , few have investigated this in children , and none have investigated the reporting accuracy  of fish intake in children using biomarkers . In a Danish school meal study , 8- to 11-year-old children ( n 834 ) were served the New Nordic Diet ( NND ) for lunch . The present study examined the accuracy of  self-reported intake  of signature foods ( berries , cabbage , root vegetables , legumes , herbs , potatoes , wild plants , mushrooms , nuts and fish ) characterising the NND . Children , assisted by parents , self-reported their diet in a Web-based Dietary Assessment Software for Children during the intervention and control ( packed lunch ) periods . The reported fish intake by children was compared with their ranking according to fasting whole-blood EPA and DHA concentration and weight percentage using the Spearman correlations and cross-classification . Direct observation of school lunch intake ( n 193 ) was used to score the accuracy of food-reporting as matches , intrusions , omissions and faults . The reporting of all lunch foods had higher percentage of matches compared with the reporting of signature foods in both periods , and the accuracy was higher during the control period compared with the intervention period . Both Spearman 's rank correlations and linear mixed models demonstrated positive associations between EPA+DHA and reported fish intake . The direct observations showed that both reported and real intake of signature foods did increase during the intervention period . In conclusion , the self-reported data represented a true increase in the intake of signature foods and can be used to examine dietary intervention effects
This dietary pattern did not significantly affect 2-h post-pr and ial blood glucose and Matsuda index .
Conclusions Adherence to the ND might improve serum insulin and HOMA-IR levels ; however , this effect was not confirmed for other markers of blood glucose control .
Aims Investigations on the possible effect of the Nordic diet ( ND ) on the glycemic control and the risk of diabetes have led to inconsistent results .
The present study tried to determine the effect of the ND on the markers of blood glucose control using a systematic review and meta- analysis of r and omized controlled clinical trials ( RCTs ) .