Internet-based Physical Activity Intervention
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|ClinicalTrials.gov Identifier: NCT01295203|
Recruitment Status : Completed
First Posted : February 14, 2011
Last Update Posted : February 14, 2011
|Condition or disease||Intervention/treatment||Phase|
|Physical Activity||Behavioral: website assess||Phase 3|
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.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||12287 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
|Primary Purpose:||Basic Science|
|Official Title:||Internet-based Physical Activity Intervention|
|Study Start Date :||May 2008|
|Actual Primary Completion Date :||May 2009|
|Actual Study Completion Date :||May 2009|
No Intervention: Control group
The control group were not given access to the intervention website and received no additional information.
Behavioral: website assess
The internet intervention group were given assess to the intervention website which included a personal page with tailored physical activity advice and a personal profile together with Recommendations and general training programs.
- Self reported physical activity [ Time Frame: after 3 month ]Physical activity was assessed self reported with the International Physical Activity Questionnaire (IPAQ)
- Self reported physical activity [ Time Frame: After 6 month ]Physical activity was assessed self reported with the International Physical Activity Questionnaire (IPAQ)
- Body weight [ Time Frame: after 3 month ]Body weight was measured to the nearest 0.1 kg and percent point with a Segmeantal Body Composition Analyser (type BC-418 MA, Tanita Corp., Tokyo, Japan).
- Fat percentage [ Time Frame: after 3 month ]Fat percentage was measured to the nearest 0.1 kg and percent point with a Segmeantal Body Composition Analyser (type BC-418 MA, Tanita Corp., Tokyo, Japan).
- Hip and Waist circumference [ Time Frame: after 3 month ]Hip and waist circumference was measured with a body tape (Chasmors WM02 Body Tape, Chasmors Ltd.,London, United Kingdom) to the nearest 1.0 cm. Waist circumference was measured midway between the iliac crest and the costal margin following a quiet expiration, and lastly hip circumference was measured at the maximal circumference over the buttocks and below the iliac crest.
- blood pressure [ Time Frame: 3 month ]Systolic and diastolic blood pressure were measured by fully automatic clinically validated blood pressure monitors (UA 779, UA-767 Plus 30 or UA 767 PC, A&D Company Ltd, Tokyo, Japan)
- Aerobic fitness [ Time Frame: after 3 month ]Estimated during a max (watt-max) or a sub-maximal test on a ergometer bike depending on the physical condition of the participant (Ergomedic 828E, Monark Exercise AB, Vansbro, Sweden). One of the following conditions contraindicated participation in the watt-max test: Any heart-related disease, chest pain, hypertension (>160/100 mmHg), heart or lung (pulmonary) medication, pregnancy and muscle, joint or skeletal problems. The sub-max test was contradicted by hypertension (>180/110 mmHg), severe heart-related disease, certain types of heart medication, muscle, joint or skeletal problems.
- Arm muscle strength [ Time Frame: after 3 month ]Arm mucle strength was measured by bending of the arms with a Takei TKK 5402 digital back strength dynamometer (Takei Scientific Instruments Co. Ltd., Tokyo, Japan). The test was performed with maximal exertion.
- blood samples [ Time Frame: After 3 months ]Non-fasting venous blood samples were collected for future analyses of P-cholesterol, P-triglyceride, and haemoglobin A1c and for biobank storage.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01295203
|National Institute of Public Health|
|Copenhagen, Denmark, 1353|
|Municipality of Frederiksberg|
|Frederiksberg, Denmark, 2000|
|Municipality of Silkeborg|
|Silkeborg, Denmark, 8600|
|Municipality of Varde|
|Varde, Denmark, 6800|
|Principal Investigator:||Andreas Wolff Hansen, Msc.||National Institute of public Health|