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Completed

NCT Number: NCT01295203

Internet-based Physical Activity Intervention

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

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Key information

Conditions

Physical Activity Behavior Motor Activity

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

National Institute of Public Health, Copenhagen, Denmark

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About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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)

Treatment and study plan

website assess

Behavioral

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.

Primary outcomes

  1. Self reported physical activity

    Time frame: after 3 month

    Physical activity was assessed self reported with the International Physical Activity Questionnaire (IPAQ)

  2. Self reported physical activity

    Time frame: After 6 month

    Physical activity was assessed self reported with the International Physical Activity Questionnaire (IPAQ)

Secondary outcomes

  1. 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).

  2. 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).

  3. 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.

  4. 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)

  5. 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.

  6. 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.

  7. 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.

Sponsors and collaborators

Lead sponsor

University of Southern Denmark

Other

Collaborators

  • Rigshospitalet, Denmark

Registry information

Important dates

Study start
2008
Primary completion
2009
Study completion
2009
First posted
Feb 14, 2011
Registry last updated
Feb 14, 2011

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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