Youth and Sport Study (YSS)

Youth and Sport Study - a 20 Year Follow-up Study of Danish Teenagers Born Between 1964 and 1969

The Youth and Sport Study (YSS) is a 20-22-year follow-up study of Danish teenagers born between 1964 and 1969. Baseline data originate from two different studies carried out in 1983 and 1985, and the follow-up study was carried out in 2005.

Study Overview

• Status: Completed
• Conditions: Obesity; Physical Activity; Lifestyle

Detailed Description

The first baseline study was conducted in 1983 and included 1260 students in high school or trade school. The questionnaire was designed with focus on various aspects of sports and physical activity beside more general questions on family, socioeconomic status, height, weight, alcohol intake, smoking, etc. Furthermore, the participants were subjected to a set of physical tests and measurements.

The second baseline study was conducted in 1985 and included a representative sample of 2498 teenagers drawn from the Danish Civil Registration (CPR) and invited to participate in the study with the aim of validating the results from the first baseline sample. The study consisted of a questionnaire with virtually the same questions as the questionnaire from 1983. A short 28-item food frequency questionnaire (FFQ) was added to the questionnaire, as well as a few questions about dietary habits.

The follow-up study was carried out in 2005, when the subjects had reached an age of around 40 years. A total of 1904 subjects were traced and asked to complete a general questionnaire, a food frequency questionnaire, and deliver a DNA sample, all distributed and returned through mail correspondence. The general questionnaire included questions on education, occupation, height, previous and present weight, weight loss history, physical activity, smoking, civil status, children, other family, stress, diseases, hospital admissions, and medicine use, among other things. The questions about physical activity were adopted from the baseline questionnaire. Other questions were adopted from other validated questionnaires. Moreover, a semi-quantitative, 195-item Food Frequency Questionnaire (FFQ), which previously has been used and validated in the Danish "Diet, Cancer and Health" study was included. The study was approved by the local ethics committee for Copenhagen and Frederiksberg (J.nr. KF 01-260/04).

• Study Type: Observational
• Enrollment (Actual): 3008

Contacts and Locations

Study Locations

• Denmark
  • Frederiksberg, Denmark, 2000
    • Parker Institute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 15 years to 19 years (ADULT, CHILD)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

The first baseline study included 1260 students in gymnasium, vocational school, or trade school born in 1964-68.

The second baseline study included a representative sample of 2498 teenagers born in 1967 or 1969 (1.5% of the total population).

Description

Danish teenagers born between 1964 and 1969.

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
School sample; Conducted in 1983 and included 1260 students in high school or trade school.
Nationwide sample; Conducted in 1985 and included a representative sample of 2498 teenagers drawn from the Danish Civil Registration (CPR)

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Physical activity	Leisure time physical activity has been assessed by questionnaire, where participants filled in the different types of sports they attended and the time they actively participated in each type of sport per week. Lastly, the type and the amount of time spend on activities outside of school and sports clubs were also assessed. Each sport and activity has been translated into metabolic equivalent (MET) scores [28]. MET scores at the individual time points and changes during follow-up will be used as outcome.	Collected/measured in 1983 or 1985 and at follow-up in 2005

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Body Mass Index (BMI)	BMI will be calculated using self-reported height and weight for both baseline and follow-up surveys. BMI at the individual time points and changes during follow-up will be used as outcome.	Weight was reported in 1983 or 1985 and at follow-up in 2005
Waist circumference	Waist circumference was self-reported at the follow-up survey.	Waist circumference was at follow-up in 2005
Alcohol consumption	Alcohol consumption was assessed by the question "How often do you drink different types of alcohol?" with three choices - beer, wine and spirit". Alcohol at the individual time points and changes during follow-up will be used as outcome.	Alcohol consumption was reported in 1983 or 1985 and at follow-up in 2005
Smoking	Smoking was assessed with the questions on smoking status and amount of tobacco smoked at baseline and follow-up. Information on smoking at the individual time points and changes during follow-up will be used as outcome.	Information on smoking was reported in 1983 or 1985 and at follow-up in 2005
Education and occupation	At follow-up, participants were asked to report their occupation and highest achieved education.	Information on education and occupation was reported in 2005
Parental education and occupation	At baseline, participants were asked to report parental occupation and highest education.	Information on education and occupation was reported in 1983 or 1985
Macronutrient intake	At follow-up, participants completed a 28-item food frequency questionnaire. From this we will calculate the participants' macronutrient intake.	Information on macronutrient intake was reported in 2005

Collaborators and Investigators

• Sponsor: Bispebjerg Hospital
• Collaborators: Aase and Ejnar Danielsens Foundation; the Danish Medical Research Council (grant number 09-060078/FSS); The Danish Ministry of Health (2003-0200-13); The Copenhagen Hospital Corporation (now Copenhagen Capital Region)

Publications and helpful links

General Publications

• Poudel P, Ismailova K, Andersen LB, Larsen SC, Heitmann BL. Adolescent wine consumption is inversely associated with long-term weight gain: results from follow-up of 20 or 22 years. Nutr J. 2019 Sep 10;18(1):56. doi: 10.1186/s12937-019-0478-7.

Study record dates

Study Major Dates

• Study Start (ACTUAL): August 1, 1983
• Primary Completion (ACTUAL): August 1, 2005
• Study Completion (ACTUAL): August 1, 2005

Study Registration Dates

• First Submitted: July 31, 2017
• First Submitted That Met QC Criteria: August 8, 2017
• First Posted (ACTUAL): August 9, 2017

Study Record Updates

• Last Update Posted (ACTUAL): August 9, 2017
• Last Update Submitted That Met QC Criteria: August 8, 2017
• Last Verified: August 1, 2017

More Information

Terms related to this study

• Keywords: Obesity; Overweight; Physical activity; Diet; Lifestyle
• Additional Relevant MeSH Terms: Overnutrition; Nutrition Disorders; Overweight; Body Weight; Obesity
• Other Study ID Numbers: 09-060078/FSS; 2003-0200-13 (OTHER_GRANT: The Danish Ministry of Health)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No