Clinical trial NCT01295203: Internet-based Physical Activity Intervention
Official title: Internet-based Physical Activity Intervention
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE3
Conditions: Physical Activity
Lead sponsor: University of Southern Denmark
Sponsor class: OTHER
Collaborators: name: Rigshospitalet, Denmark
First posted: 2011-02-14
Enrollment: 12287
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: BASIC_SCIENCE

Brief summary: The purpose of this study is to determine whether access to a website with personalized feedback on physical activity level and suggestions to increase physical activity results in improvements in self-reported physical activity, anthropometrics and physiological measurements

Detailed description: In a website-based intervention study, the investigators wish to examine if it is possible to increase physical activity among inactive persons. Main objective is to determine if access to a website with personalized feedback on PA level and suggestions to increase PA results in improvements in self reported PA, anthropometrics and applied physiological measurements.

Physical inactive adults (n=12,287) participating in a nationwide health survey and examination (DANHES) were asked to randomly assigned to either intervention (n=6,055) or control group (n=6,232). The intervention group had access to a PA website with personalized advice and suggestions to increase PA. After 3 and 6 months, a follow-up questionnaire was administered by e-mail. The 7-day International Physical Activity Questionnaire was included in the questionnaires to assess four domains of PA in daily-life (work, transportation, domestic, and leisure-time) and sedentary time. Furthermore, at the 3 month follow-up a subgroup of participants (n=1,190) were invited complete anthropometrics and physiological measurements.

Eligibility criteria: Inclusion Criteria:

* Healthy adults
* Physically inactive in leisure time (assessed by self reported questionnaire)

Exclusion Criteria:

* Presence of serious heart problems or not being able to perform everyday activities
* Highly physically active in leisure time (assessed by self reported questionnaire)

Primary outcomes:
measure: Self reported physical activity
timeFrame: after 3 month
measure: Self reported physical activity
timeFrame: After 6 month
Secondary outcomes:
measure: Body weight
timeFrame: after 3 month
measure: Fat percentage
timeFrame: after 3 month
measure: Hip and Waist circumference
timeFrame: after 3 month
measure: blood pressure
timeFrame: 3 month
measure: Aerobic fitness
timeFrame: after 3 month
measure: Arm muscle strength
timeFrame: after 3 month
measure: blood samples
timeFrame: After 3 months
Other outcomes:
Locations:
city: Copenhagen
country: Denmark
facility: National Institute of Public Health
city: Frederiksberg
country: Denmark
facility: Municipality of Frederiksberg
city: Silkeborg
country: Denmark
facility: Municipality of Silkeborg
city: Varde
country: Denmark
facility: Municipality of Varde
Study officials:
affiliation: National Institute of public Health
name: Andreas Wolff Hansen, Msc.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Hansen AW, Gronbaek M, Helge JW, Severin M, Curtis T, Tolstrup JS. Effect of a Web-based intervention to promote physical activity and improve health among physically inactive adults: a population-based randomized controlled trial. J Med Internet Res. 2012 Oct 30;14(5):e145. doi: 10.2196/jmir.2109.