Eighteen women were enrolled, 11 in Group I, the 3-day group (4 remained at study end), and 7 in Group II, 5-day group (4 completing the 36-week study). The mean age of the women in the 3-day group was 56.5 (SD 6.4), and in the 5-day group, it was 53.5 (SD 5.8). The number of minutes walked per week for the 3-day group was 63.72 (SD 44.67), and for the 5-day group, 129.15 (SD 65.55). The goal was for participants to walk 90 and 150 minute/week respectively. At 12 weeks, the drop-out rate was 28%; at 36 weeks, it grew to 52%.
The mixed models analysis showed significant main effect differences in the groups in BMI over time [F (2, 16) = 12.86, p = .001], with BMI decreasing over time. This change over time differed by group, 3 days vs. 5 days/week walking [F (2, 16) = 4.49, p < .003], primarily in the 3-day/week walk group between all time points (T1-T2, [F (2, 16 = 5.22, p < 0.03]; T1-T3 [F (2, 16) = 20.97, p < 0.001], T2-T3 [F (2, 16) = 9.34, p < .005]. Differences were shown only between T1 and T2 in the 5-day/week walk group [F (2, 16) = 12.09, p < 0.003]. T1-T3 and T2-T3 in the 5-day/week walk group were not significantly different. As one would expect, the other body fat parameters, such as BIA [F (2, 16) = 4.27, p < 0. 05] and weight [F (2, 160= 17.24, p < 0.001), showed the same pattern of between-group differences at T3. Over time (36 weeks), changes in serum cholesterol levels were not significant. The LDL-C fell in the 5-day group but not in the 3-day group. The triglycerides fell in the 3-day group and rose in the 5-day group. and presents the study findings on the measures.
Blood Lipid Levels in Groups I and II
Anthropometric Measures in Groups I and II
For this sample, the Hazuda Scale showed strong assimilation, such as high proficiency in the English language with a high value and preference to Mexican cultural values and Spanish-language preference. The neighborhood characteristics scale indicated that the women found their walking neighborhoods to be safe. There were no significant relationships between the minutes walked each week and the psychosocial parameters of acculturation and neighborhood characteristics. In contrast, for the 3-day group, there was a strong correlation between minutes walked and the social support scores (r = 0.99; p = 0.04) ().
Social Support Scores for Groups I and II