Principal Findings
fatigue
The objectives of this study were to demonstrate the feasibility, acceptability, and preliminary efficacy of the pilot RCT, Hombres Saludables trial, which was a 6-month PA eHealth intervention for diverse Spanish-speaking Latino men. Overall, the intervention demonstrated feasibility, with a very high retention rate (>90%). The participants indicated that the intervention was acceptable in the follow-up survey and qualitative interviews. PA participants frequently used the website and its individual features and reported satisfaction with these intervention components. The intervention group increased their levels of MVPA (measured objectively and subjectively) relative to the control group. However, as this was a pilot study, we did not have the power to detect statistical significance. Some of the intervention moderators (eg, neighborhood safety) and a mediator (ie, self-efficacy) demonstrated some effects on the intervention. Although the preliminary efficacy findings were promising, these should be interpreted with caution given the very small sample size for this pilot study and the wide CIs. However, the point estimates were in the right direction, which suggests that a fully powered trial is warranted.This study’s findings were consistent with previous pilot feasibility and acceptability PA or weight management interventions with Latino men [Preliminary efficacy results suggested that intervention participants increased their levels of PA more than control group participants. For instance, similar increases in meeting PA guidelines after 6 months were observed in a pilot, Spanish-language PA intervention with Mexican American men and in a Spanish-language PA intervention for Latina women [Changes in PA appeared to relate directly to intervention engagement. Specifically, participants receiving higher dose of intervention self-reported more MVPA and were more likely to meet the United States PA guidelines. These results were consistent with those of previous studies. A recent systematic review and meta-analysis reported that engagement with PA digital health interventions had weak but positive associations with PA outcomes [In exploratory analyses, several moderators (motivational readiness or stage of change, employment, and neighborhood safety) and a mediator (self-efficacy) were associated with intervention outcomes. Intervention group participants in the contemplative stage of change (ie, those who did not engage in regular PA) reported higher minutes per week of MVPA at 6 months than control participants, which provides support for the intervention in increasing PA. The finding that participants in the PA intervention group who were not employed full time also reported significantly greater PA than those in the control group could be attributed in part to having additional time for MVPA and less work-related fatigue from working in physically demanding jobs [