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The impact of dietary amino acids on the mental health of older overweight adults

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The impact of dietary amino acids on the mental health of older overweight adults

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Background The aim of this study was to examine the relationship between dietary amino acids and mental health for overweight and obese older (55+) adults. Methods 168 overweight, older (mean age 62.7 ± 5.5) adults (n=65 men, n=103 women), completed the RAND-­‐36 item Health Survey (RAND-­‐36) and kept a 3-­‐day food record in this cross-­‐sectional study. The relationship between the dietary amino acid intake as percentage of protein and the MCS (Mental Component Score) was assessed using linear regression analysis. The model was verified for the following covariates: sex, age, body mass index (kg/m2), PCS (Physical Component Score) and total energy intake per day (kilocalories). Results Intake of all amino acids and groups of amino acids was strongly and significantly correlated (Pearson correlation coefficients: 0.81-­‐0.99). Mean MCS was 11% lower in case of a deficiency, though this difference was not significant. Relationships were found for isoleucine (β=8.467, p=0.000), leucine (β=4.677, p=0.000), methionine (β=10.026, p=0.012), phenylalanine (β=7.840, p=0.001), tyrosine (β=8.613, p=0.001), threonine (β=7.137, p=0.006), tryptophan (β=29.979, p=0.001), valine (β=5.395, p=0.003), glutamic acid (β=0.930, p=0.019), proline (β=1.983, p=0.021), serine (β=6.543, p=0.001), branched-­‐chain amino acids (BCAA’s, β=2.026, p=0.001), aromatic amino acids (AR’s, β=3.980, p=0.001) and large neutral amino acids (LNAA’s, β=1.370, p=0.001) expressed as a percentage of protein intake. The AR versus BCAA intake was negatively related (β=-­‐86.808, p=0.036) with the MCS. Conclusion Dietary amino acids and groups of dietary amino acids, expressed as a percentage of total protein intake, show significant relationships with mental health for older, overweight adults.

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OrganisatieHogeschool van Amsterdam
InstituutBewegen, Sport en Voeding
Gepubliceerd in
Jaar2015
TypeBachelorscriptie
TaalNederlands

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