scholarly journals Processes of change for increasing fruit and vegetable consumption among economically disadvantaged African American adolescents

2012 ◽  
Vol 13 (1) ◽  
pp. 58-61 ◽  
Author(s):  
Jennifer Di Noia ◽  
Debbe Thompson
Keyword(s):  
African American ◽  
Economically Disadvantaged ◽  
Vegetable Consumption ◽  
African American Adolescents ◽  
Fruit And Vegetable Consumption ◽  
Processes Of Change ◽  
Fruit And Vegetable

scholarly journals Application of the Transtheoretical Model to Fruit and Vegetable Consumption among Economically Disadvantaged African-American Adolescents: Preliminary Findings

2006 ◽  
Vol 20 (5) ◽  
pp. 342-348 ◽  
Author(s):  
Jennifer Di Noia ◽  
Steven P. Schinke ◽  
James O. Prochaska ◽  
Isobel R. Contento
Keyword(s):  
African American ◽  
Transtheoretical Model ◽  
Self Efficacy ◽  
Economically Disadvantaged ◽  
Vegetable Consumption ◽  
African American Adolescents ◽  
Decisional Balance ◽  
Fruit And Vegetable Consumption ◽  
Processes Of Change ◽  
Fruit And Vegetable

Purpose. To examine the application of the transtheoretical model (TTM) to fruit and vegetable consumption among economically disadvantaged African-American adolescents. Methods. Scales for measuring decisional balance, situational self-efficacy, and processes of change for fruit and vegetable consumption were developed and pretested with 57 economically disadvantaged African-American adolescents. The scales and measures for assessing stages of change, demographic variables, and fruit and vegetable consumption were administered to a separate sample of 262 participants. t-tests for independent samples and analysis of variance were used to examine differences in TTM variables and fruit and vegetable consumption across stages of change. Results. Two-factor solutions for decisional balance and processes of change and a three-factor solution for situational self-efficacy provided the best fit to the data. Alpha coefficients of reliability for the scales ranged from .77 (experiential change processes) to .91 (pros). Participants in action-maintenance stages evidenced higher pros, self-efficacy, and fruit and vegetable consumption and significantly lower cons than did participants in precontemplation and contemplation-preparation stages. Also, participants in action-maintenance stages used processes of change more frequently than did those in precontemplation-contemplation-preparation stages. The use of experiential and behavioral processes within these stages did not differ significantly, as posited. Discussion. Observed differences in TTM variables and fruit and vegetable consumption by stage of change in this sample of economically disadvantaged African-American adolescents were consistent with theory and previous applications of the model to fruit and vegetable consumption in adults. With replication studies, the TTM may be appropriate for designing interventions to increase fruit and vegetable consumption among this population.

scholarly journals Validity and Reliability of a Dietary Stages of Change Measure among Economically Disadvantaged African-American Adolescents

2012 ◽  
Vol 26 (6) ◽  
pp. 381-389 ◽  
Author(s):  
Jennifer Di Noia ◽  
Leanne Mauriello ◽  
Carol Byrd-Bredbenner ◽  
Debbe Thompson
Keyword(s):  
African American ◽  
Correlation Analysis ◽  
Construct Validity ◽  
Vegetable Consumption ◽  
Stage Of Change ◽  
African American Adolescents ◽  
Fruit And Vegetable Consumption ◽  
Fruit And Vegetable ◽  
Retest Reliability ◽  
Test Retest Reliability

Purpose. To examine the construct validity and 2-month test-retest reliability of a staging measure for assessing readiness to consume five or more daily servings of fruits and vegetables among economically disadvantaged African-American adolescents. Design. Longitudinal survey. Setting. Youth services agencies serving low-income communities in New York, New Jersey, and Pennsylvania. Subjects. African-American adolescents (N = 390) aged 11 to 14 years. Measures. Self-report measures of stage of change and fruit and vegetable consumption. Analysis. Correlation analysis and analysis of covariance were used to examine, cross-sectionally, whether fruit and vegetable consumption differed by stage of change (validity assessment). Correlation analysis and Cohen's kappa (κ) were used to assess the degree of association and level of agreement between stages longitudinally (test-retest reliability assessment). Results. Fruit and vegetable consumption was moderately correlated with stage of change (r ≥ .54, p = .000). Consistent with the transtheoretical model, youths' consumption increased from earlier to later stages (p = .000). Forty-six percent of youths were in the same stage at both measurements. The correlation between stages was .26, and Cohen's κ was .20 (p = .000). Conclusions. Despite preliminary evidence of construct validity, the low test-retest reliability found suggests that further research and testing are needed to improve the stability of the measure.

scholarly journals How and why does discretionary food consumption change when we promote fruit and vegetables? Results from the ShopSmart randomised controlled trial

2019 ◽  
Vol 23 (1) ◽  
pp. 124-133
Author(s):  
Rachelle S Opie ◽  
Sarah A McNaughton ◽  
David Crawford ◽  
Gavin Abbott ◽  
Kylie Ball
Keyword(s):  
Randomised Controlled Trial ◽  
Food Consumption ◽  
Economically Disadvantaged ◽  
Vegetable Consumption ◽  
Controlled Trial ◽  
Fruit And Vegetable Consumption ◽  
Mediating Effect ◽  
Fruit And Vegetable ◽  
Intervention Effects ◽  
Randomised Controlled

AbstractObjective:The present study aimed to identify whether discretionary food consumption declined in an intervention focused primarily on promoting fruit and vegetable consumption. We also aimed to identify potential mediators explaining intervention effects on discretionary food consumption.Design:Secondary analysis of data from the ShopSmart study, a randomised controlled trial involving a 6-month intervention promoting fruit and vegetable consumption. Linear regression models examined intervention effects on discretionary food consumption at intervention completion (T2). A half-longitudinal mediator analyses was performed to examine the potential mediating effect of personal and environmental factors on the association between the intervention effects and discretionary food consumption. Indirect (mediated) effects were tested by the product of coefficients method with bootstrapped se using Andrew Hayes’ PROCESS macro for SPSS.Setting:Women were recruited via the Coles FlyBuys loyalty card database in socio-economically disadvantaged suburbs of Melbourne, Australia.Participants:Analyses included 225 women (116 intervention and 109 control).Results:Compared with controls, intervention participants consumed fewer discretionary foods at T2, after adjusting for key confounders (B = −0·194, 95 % CI −0·378, −0·010 servings/d; P = 0·039). While some mediators were associated with the outcome (taste, outcome expectancies, self-efficacy, time constraints), there was no evidence that they mediated intervention effects.Conclusions:The study demonstrated that a behavioural intervention promoting fruit and vegetable consumption among socio-economically disadvantaged participants was effective in reducing discretionary food intake. Although specific mediators were not identified, researchers should continue searching for mechanisms by which interventions have an effect to guide future programme design.

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