A family based tailored counselling to increase non-exercise physical activity in adults with a sedentary job and physical activity in their young children: Design and methods of a year-long randomized controlled trial

摘要

Background: Epidemiological evidence suggests that decrease in sedentary behaviour is beneficial for health. Thisfamily based randomized controlled trial examines whether face-to-face delivered counselling is effective inreducing sedentary time and improving health in adults and increasing moderate-to-vigorous activities in children.Methods: The families are randomized after balancing socioeconomic and environmental factors in the Jyväskyläregion, Finland. Inclusion criteria are: healthy men and women with children 3-8 years old, and having anoccupation where they self-reportedly sit more than 50% of their work time and children in all-day day-care inkindergarten or in the first grade in primary school. Exclusion criteria are: body mass index > 35 kg/m2, selfreportedchronic, long-term diseases, families with pregnant mother at baseline and children with disordersdelaying motor development.From both adults and children accelerometer data is collected five times a year in one week periods. In addition,fasting blood samples for whole blood count and serum metabonomics, and diurnal heart rate variability for 3days are assessed at baseline, 3, 6, 9, and 12 months follow-up from adults. Quadriceps and hamstring muscleactivities providing detailed information on muscle inactivity will be used to realize the maximum potential effectof the intervention. Fundamental motor skills from children and body composition from adults will be measured atbaseline, and at 6 and 12 months follow-up. Questionnaires of family-influence-model, health and physical activity,and dietary records are assessed. After the baseline measurements the intervention group will receive tailoredcounselling targeted to decrease sitting time by focusing on commute and work time. The counselling regardingleisure time is especially targeted to encourage toward family physical activities such as visiting playgrounds andnon-built environments, where children can get diversified stimulation for play and practice fundamental of motorskills. The counselling will be reinforced during the first 6 months followed by a 6-month maintenance period.Discussion: If shown to be effective, this unique family based intervention to improve lifestyle behaviours in bothadults and children can provide translational model for community use. This study can also provide knowledgewhether the lifestyle changes are transformed into relevant biomarkers and self-reported health.