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Baseline omega-3 index correlates with aggressive and attention deficit disorder behaviours in adult prisoners.

Meyer BJ, Byrne MK, Collier C, Parletta N, Crawford D, Winberg PC, Webster D, Chapman K, Thomas G, Dally J, Batterham M, Farquhar I, Martin AM, Grant L - PLoS ONE (2015)

Bottom Line: There is emerging evidence that the supplementation of omega-3 contributes to a decrease in aggressive behaviour in prison populations.A challenge of such research is achieving statistical power against effect sizes which may be affected by the baseline omega-3 index.The baseline omega-3 index ranged from 2.3% to 10.3%, indicating that some participants already had substantial omega-3 intake, however a median of 4.7% indicated a lower overall omega-3 intake than the general Australian population.

View Article: PubMed Central - PubMed

Affiliation: School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia; Illawarra Heath and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, Australia.

ABSTRACT

Background: There is emerging evidence that the supplementation of omega-3 contributes to a decrease in aggressive behaviour in prison populations. A challenge of such research is achieving statistical power against effect sizes which may be affected by the baseline omega-3 index. There are no published data on the blood omega-3 index with studies of this kind to assess the variability of the blood omega-3 index in conjunction with aggression and attention deficit assessments.

Objective: To determine if the variance of the omega-3 index is correlated with aggressive and attention deficit behaviour in a prison population.

Design: 136 adult male prisoners were recruited from South Coast Correctional Centre (SCCC), NSW Australia. A 7 point categorisation was used to quantify levels of aggressive behaviour (4 weeks) from individual SCCC case notes, whereby higher scores correspond to increasingly aggressive behaviour. Study participants completed the Aggression Questionnaire (AQ) and the Brown's Attention Deficit Disorder Scales (BADDS), provided a blood sample for erythrocyte fatty acid analysis using gas chromatography and the omega-3 index was calculated.

Results: The baseline omega-3 index ranged from 2.3% to 10.3%, indicating that some participants already had substantial omega-3 intake, however a median of 4.7% indicated a lower overall omega-3 intake than the general Australian population. Assessment of aggressive and attention deficit behaviour shows that there were negative correlations between baseline omega-3 index and baseline aggression categorisation scores (r = -0.21, P = 0.016); total AQ score (r = -0.234, P = 0.011); Anger (r = -0.222 p = 0.016); Hostility AQ (r = -0.239, P = 0.009); indirect aggression (r = -0.188 p = 0.042); total BADDS (r = -0.263, p = 0.005); Activation (r = -0.224, p = 0.016); Attention (r = -0.192, p = 0.043); Effort (r = -0.253, p = 0.007); Affect (r = -0.330, p = 0.000) and Memory (r = -0.240, p = 0.010).

Conclusions: There is a high variability in omega-3 status of a NSW prison population, and inmates with lower omega-3 index were more aggressive and had higher ADD scores.

No MeSH data available.


Related in: MedlinePlus

Spearman’s Rho Correlation with bootstrapped confidence intervals between Hostility and Omega-3 Index (r = -0.239, adjusted p = 0.023).
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pone.0120220.g002: Spearman’s Rho Correlation with bootstrapped confidence intervals between Hostility and Omega-3 Index (r = -0.239, adjusted p = 0.023).

Mentions: Most measures of aggressive and attention deficit disorder behaviours were negatively correlated with the omega-3 index (Table 3), while 4 measures out of 11 (physical, verbal and indirect aggression as well as attention) did not significantly correlate with the omega-3 index, whilst all other measures of aggressive and attention deficit disorder behaviours were negatively correlated with the omega-3 index. Therefore, the lower the omega-3 index, the higher the score of aggressive and attention deficit disorder behaviours for the most part; the strongest negative correlations being between Hostility and Omega-3 index (Fig. 2), and Affect and Omega-3 Index (Fig. 3). The IBOS was also negatively correlated with and the Omega-3 Index (Fig. 4).


Baseline omega-3 index correlates with aggressive and attention deficit disorder behaviours in adult prisoners.

Meyer BJ, Byrne MK, Collier C, Parletta N, Crawford D, Winberg PC, Webster D, Chapman K, Thomas G, Dally J, Batterham M, Farquhar I, Martin AM, Grant L - PLoS ONE (2015)

Spearman’s Rho Correlation with bootstrapped confidence intervals between Hostility and Omega-3 Index (r = -0.239, adjusted p = 0.023).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4368577&req=5

pone.0120220.g002: Spearman’s Rho Correlation with bootstrapped confidence intervals between Hostility and Omega-3 Index (r = -0.239, adjusted p = 0.023).
Mentions: Most measures of aggressive and attention deficit disorder behaviours were negatively correlated with the omega-3 index (Table 3), while 4 measures out of 11 (physical, verbal and indirect aggression as well as attention) did not significantly correlate with the omega-3 index, whilst all other measures of aggressive and attention deficit disorder behaviours were negatively correlated with the omega-3 index. Therefore, the lower the omega-3 index, the higher the score of aggressive and attention deficit disorder behaviours for the most part; the strongest negative correlations being between Hostility and Omega-3 index (Fig. 2), and Affect and Omega-3 Index (Fig. 3). The IBOS was also negatively correlated with and the Omega-3 Index (Fig. 4).

Bottom Line: There is emerging evidence that the supplementation of omega-3 contributes to a decrease in aggressive behaviour in prison populations.A challenge of such research is achieving statistical power against effect sizes which may be affected by the baseline omega-3 index.The baseline omega-3 index ranged from 2.3% to 10.3%, indicating that some participants already had substantial omega-3 intake, however a median of 4.7% indicated a lower overall omega-3 intake than the general Australian population.

View Article: PubMed Central - PubMed

Affiliation: School of Medicine, University of Wollongong, Wollongong, New South Wales, Australia; Illawarra Heath and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, Australia.

ABSTRACT

Background: There is emerging evidence that the supplementation of omega-3 contributes to a decrease in aggressive behaviour in prison populations. A challenge of such research is achieving statistical power against effect sizes which may be affected by the baseline omega-3 index. There are no published data on the blood omega-3 index with studies of this kind to assess the variability of the blood omega-3 index in conjunction with aggression and attention deficit assessments.

Objective: To determine if the variance of the omega-3 index is correlated with aggressive and attention deficit behaviour in a prison population.

Design: 136 adult male prisoners were recruited from South Coast Correctional Centre (SCCC), NSW Australia. A 7 point categorisation was used to quantify levels of aggressive behaviour (4 weeks) from individual SCCC case notes, whereby higher scores correspond to increasingly aggressive behaviour. Study participants completed the Aggression Questionnaire (AQ) and the Brown's Attention Deficit Disorder Scales (BADDS), provided a blood sample for erythrocyte fatty acid analysis using gas chromatography and the omega-3 index was calculated.

Results: The baseline omega-3 index ranged from 2.3% to 10.3%, indicating that some participants already had substantial omega-3 intake, however a median of 4.7% indicated a lower overall omega-3 intake than the general Australian population. Assessment of aggressive and attention deficit behaviour shows that there were negative correlations between baseline omega-3 index and baseline aggression categorisation scores (r = -0.21, P = 0.016); total AQ score (r = -0.234, P = 0.011); Anger (r = -0.222 p = 0.016); Hostility AQ (r = -0.239, P = 0.009); indirect aggression (r = -0.188 p = 0.042); total BADDS (r = -0.263, p = 0.005); Activation (r = -0.224, p = 0.016); Attention (r = -0.192, p = 0.043); Effort (r = -0.253, p = 0.007); Affect (r = -0.330, p = 0.000) and Memory (r = -0.240, p = 0.010).

Conclusions: There is a high variability in omega-3 status of a NSW prison population, and inmates with lower omega-3 index were more aggressive and had higher ADD scores.

No MeSH data available.


Related in: MedlinePlus