Study objective: To compare health walks, a community based lay-led walking scheme versus advice only on physical activity and cardiovascular health status in middle aged adults. Design: Randomised controlled trial with one year follow up. Physical activity was measured by questionnaire. Other measures included attitudes to exercise, body mass index, cholesterol, aerobic capacity, and blood pressure. Setting: Primary care and community. Participants: 260 men and women aged 40-70 years, taking less than 120 minutes of moderate intensity activity per week. Main results: Seventy three per cent of people completed the trial. Of these, the proportion increasing their activity above 120 minutes of moderate intensity activity per week was 22.6% in the advice only and 35.7% in the health walks group at 12 months (between group difference =13% (95% CI 0.003% to 25.9%) p=0.05). Intention to treat analysis, using the last known value for missing cases, demonstrated smaller differences between the groups (between group difference =6% (95% CI −5% to 16.4%)) with the trend in favour of health walks. There were improvements in the total time spent and number of occasions of moderate intensity activity, and aerobic capacity, but no statistically significant differences between the groups. Other cardiovascular risk factors remained unchanged. Conclusions: There were no significant between group differences in self reported physical activity at 12 month follow up when the analysis was by intention to treat. In people who completed the trial, health walks was more effective than giving advice only in increasing moderate intensity activity above 120 minutes per week.
The American Indian population has among the highest rates of obesity in the United States. Thus, it is critical to understand factors related to this epidemic (e.g., physical activity, nutrition) among this ethnic minority population. The current study examined factors related to engaging in at least 4 days of physical activity (PA) per week and factors related to consuming at least 5 fruits and vegetables (FV) per day among a sample of American Indians in the Midwest. We used multiple methods to recruit participants for this study, including recruitment at pow wows, focus groups, health fairs, new student orientation for American Indian students, and other venues. A total of 998 American Indians (76% participation rate) completed a survey assessing sociodemographics, physical activity level, fruit and vegetable intake, and perceptions regarding the recommendations for physical activity and fruit and vegetable intake. Factors associated with exercising ≥4 days in the past week (44.77% of the sample) include being younger (P = .002), being male (P<.001), having at least some college education (P = .048), eating ≥5 FV per day, and higher perceived number of days of PA recommended (P<.001). Factors associated with eating ≥5 servings of FV per day (37.01% of the sample) included exercising ≥4 days in the past week (P<.001) and higher perceived number of servings of FV recommended (P<.001). These findings highlight the importance of education in enhancing engagement in positive weight control behaviors and the importance of addressing both physical activity and nutrition among the American Indian population.
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