| dc.description.abstract | In adults, published studies have linked choline, magnesium and omega-3 fatty acids to heart rate (HR). No studies were identified that evaluated the affects of nutrients on HR in children. The purpose of this study was to determine if any nutrients affected HR in children, and if they do, were there age, gender or race/ethnic differences. This was a cross sectional analysis of existing data from a larger randomized control trial, the Kansas Intervention with Dairy in Schools project. There were 968 subjects in grades 3-5 from the Kansas City, KS and Shawnee Mission, KS public school districts. Data were collected during the school day in the fall of 2008. A DINAMAP Compact Monitor (Critikon, Tampa, FL) was used to measure HR and blood pressure, there was a 5 minute period of rest and then 4 measures with 1 minute of rest in between, the 4 measures were averaged together to obtain the average HR. Diet information was obtained using a standardized multiple pass 24 hour diet recall. Diet intake was analyzed using Nutrition Data System for Research (version 2008, University of Minnesota, Minneapolis, MN). Results indicated that the nutrients that were correlated to HR were calcium, daidzein, genestein, glyciten, lactose, erucic acid and saccharin. The results of the best fit regression model that did not consider gender, race/ethnicity or age included calcium, genestin, erucic acid, saccharine, sodium, gadoleic acid, and caffeine (R2 = 0.0398).The results of the best fit model that did include gender, race/ethnicity and age included white non Hispanic, black non Hispanic, 9 years of age, calcium, genestien, erucic acid, sodium, caffeine and xylitol (R2=0.098). These data suggest that 9 years of age could be the cutoff point when diet begins to play a large role in determining HR, but further research is needed. | |
