Reducing sitting time, independent of physical activity, is important for health. However, few reports have been published regarding physical activity of housewives compared to that of employed women. We examined strategies to shorten housewives' sitting time using a single-blind randomized controlled trial. Forty-eight housewives (38.0 ± 4.5 years old) were randomly assigned to one of three groups: pamphlet, self-feedback, and tailored feedback groups. All participants received a pamphlet describing the risks of prolonged sitting. The self-feedback and tailored feedback groups were also given feedback on sitting time by a smartphone application. The tailored feedback group received individual suggestions regarding lifestyle to shorten sitting time. We measured physical activity using an accelerometer and health-related quality of life using the Short-Form 8. The longest prolonged sitting time significantly decreased over time, a significant reduction was observed after the intervention only in the tailored feedback group. Vitality, mental health, and role emotional components of health-related quality of life showed a significant improvement with time but no significant differences were observed among the study groups. We suggested an easy approach to shortening prolonged sitting time in housewives using a pamphlet and feedback by smartphone. However, tailored consulting was necessary to yield a more effective result.
Keywords: Health-related quality of life; housewives; physical activity; prolonged sitting.