Blood docosahexaenoic acid and eicosapentaenoic acid in vegans: Associations with age and gender and effects of an algal-derived omega-3 fatty acid supplement.

BACKGROUND & AIMS: Several studies have demonstrated that vegetarians and vegans have much lower plasma concentrations of omega-3 fatty acids (i.e., docosahexaenoic and eicosapentaenoic acids) when compared to those who eat fish. The purposes of this study were 1) to define the age and/or sex-specific docosahexaenoic plus eicosapentaenoic acids levels in red blood cell membranes (expressed as a percent of total fatty acids; hereafter the omega-3 index) in long-term vegans, and 2) to determine the effects of a vegetarian omega-3 supplement (254 mg docosahexaenoic plus eicosapentaenoic acids/day for 4 months) on the omega-3 index. METHODS: A sample (n = 165) of vegans was recruited, and their omega-3 index was determined using a dried blood spot methodology. A subset of 46 subjects with a baseline omega-3 index of <4% was given a vegetarian omega-3 supplement for 4 months and then retested. RESULTS: The mean ± SD omega-3 index was 3.7 ± 1.0% which was similar to that of a cohort of omnivores (deployed US soldiers) from a recently-reported study. Among the vegan cohort, the index was significantly higher in females than males (3.9 ± 1.0% vs. 3.5 ± 1.0%; p = 0.026) and was directly related to age (p for trend = 0.009). The omega-3 index increased from 3.1 ± 0.6% to 4.8 ± 0.8% (p = 0.009) in the supplementation study. CONCLUSIONS: We conclude that vegans have low baseline omega-3 levels, but not lower than omnivores who also consume very little docosahexaenoic and eicosapentaenoic acids. The vegans responded robustly to a relatively low dose of a vegetarian omega-3 supplement.

A pilot of a video game (DDR) to promote physical activity and decrease sedentary screen time.

OBJECTIVE: We examined the feasibility of Dance Dance Revolution (DDR), a dance video game, in participants' homes, to increase physical activity (PA) and to decrease sedentary screen time (SST). METHODS AND PROCEDURES: Sixty children (7.5 +/- 0.5 years) were randomized in a 2:1 ratio to DDR or to wait-list control (10-week delay). DDR use was logged, PA was measured objectively by accelerometry. SST was self-reported at weeks 0 and 10. At week 28, after both groups had access to DDR, accelerometry and SST were repeated. RESULTS: Mean use of DDR was 89 +/- 82 (range 0-660 min) min per week (mpw). The DDR group showed increased vigorous PA and a reduction in light PA; the control group showed no increase in moderate and/or vigorous PA (MVPA) although they also had a reduction in light PA. Differences between the groups were not observed. The DDR group also reported a decrease in SST of -1.2 +/- 3.7 h per week (hpw) (P < 0.05), whereas the controls reported an increase of +3.0 +/- 7.7 hpw (nonsignificant). The difference in SST between the groups was significant, with less SST in the DDR group. Between weeks 10 and 28, numeric reductions in SST were reported in both groups. In the DDR group, SST at week 28 (8.8 +/- 6.0 hpw) was lower than baseline (10.5 +/- 5.5 hpw; P < 0.03). DISCUSSION: This pilot study suggests that DDR reduces SST and may facilitate slight increases in vigorous PA. Further study is needed to better characterize children and contexts in which DDR may promote a healthy lifestyle.

"Una mujer trabaja doble aqui": Vignette-based focus groups on stress and work for Latina blue-collar women in eastern North Carolina.

Latina women are a growing percentage of the working population, and very little is known about their health needs and interests. The purpose of this article is to share qualitative research results gathered from Latina women with a particular focus on exploring stress and health. This project was a substudy of Health Works in the Community, a 5-year CDC-funded multiple risk-factor reduction trial using participatory action research approaches to address smoking, healthy eating, stress, and physical activity among blue-collar women from 12 manufacturing work sites in rural, eastern North Carolina. Five focus groups were conducted with trained, bilingual facilitators using a vignette-based moderator guide that appeared particularly effective with this population. Results from the focus groups are used to make recommendations for future research with Latinas and for developing effective work-site-based interventions to address issues of stress and health within this population.

Extending the reach of public health nutrition: training community practitioners in multilevel approaches.

BACKGROUND: Cardiovascular disease (CVD) is a major public health concern in the United States. We developed an annual training course, Nutrition and Public Health, A Course for Community Practitioners (NPH), to address the identified training needs of state staff responsible for designing and implementing the Well-Integrated Screening and Evaluation for Women Across the Nation (WISEWOMAN) program and to support other health professionals working in programs that address chronic disease prevention and management. METHODS: After conducting a needs assessment with state-level WISEWOMAN staff in 2001 to identify topics of interest, we formed an advisory committee to provide guidance on topics, theoretical frameworks, training concerns, and multilevel intervention approaches. The first week-long training course, which included an intensive field practicum, was implemented in the fall of 2002. RESULTS: Participants rated three fourths of the elements listed in a posttraining evaluation as a course strength, giving particularly high ratings to various indicators of course quality (100%) and networking opportunities (95%). Just over half (55%) rated the field practicum as a course strength. Four fifths (83%) of participants responded to a 6-month follow-up evaluation, and most indicated that the course had increased their knowledge and skills and increased their confidence in planning programs. CONCLUSIONS: Unique features of the course include its suitability for public health practitioners not previously trained in nutrition, its promotion of multilevel interventions, and its focus on CVD risk reduction and nutrition interventions for underinsured and uninsured populations.