Clinical trial NCT01137227: Factors Associated With Physical Inactivity Among Adolescents
Official title: Factors Associated With Physical Inactivity Among Adolescents: a Systematic Review and Meta-analysis
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Physical Inactivity
Obesity
Overweight
Keywords: Physical activity
Epidemiology
Questionnaire
Cross-sectional study
Lead sponsor: University of Sao Paulo General Hospital
Sponsor class: OTHER
First posted: 2010-06-04
Enrollment: 264
Sex: ALL
Minimum age (years): 10
Maximum age (years): 18
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Time perspective: RETROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: Samples of adolescents (age range 10-18y) without diseases and/or physical limitations.

Brief summary: Despite the acknowledgment that physical activity is important for health, there are still few population-based or school-based studies that uses the current physical activity guidelines for adolescents.

Physical inactivity was defined a less than 300 min/w of moderate to vigorous-intensity physical activity practice.

Previous research has shown very high prevalence rates of physically inactive adolescents and a strong association with demographic, socioeconomic and biological factors.

Based on this information, the investigators are elaborating a systematic review of literature to obtain and provide more accurate information in this context.

Detailed description: The objectives of this study were to (i) review extant literature on the prevalence of physical inactivity (PI) in adolescents of both sex (10-18 years old); (ii) compare its prevalence between developed and developing countries.

The search was carried out using online databases (Biomed Central, CINAHL, EMBASE, ERIC, MEDLINE, PsycInfo, Scopus, SPORTDiscus), references cited by retrieved articles and by contact with the authors, considering articles published from the establishment of the databanks until April 29th, 2010.

Eligibility criteria: Inclusion Criteria:

* Cross-sectional studies.
* Original studies showed that physical inactivity is evaluated through a questionnaire.
* Studies which ranked 300\> inactivity min/wk.

Exclusion Criteria:

* Studies did not assess physical inactivity through a questionnaire.
* Studies in which the participants were only overweight/obese, diabetics or suffering from another disease.

Primary outcomes:
measure: Obtain the prevalence of physical inactivity in adolescents (age 10-18 y) using a questionnaire.
timeFrame: up than 1 week
Secondary outcomes:
Other outcomes:
Locations:
city: São Paulo
country: Brazil
facility: Universidade de São Paulo, School of Medicine
Study officials:
affiliation: University of São Paulo, School of Medicine, Department of Preventive Medicine
name: Paulo R Menezes, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: University of São Paulo, School of Medicine, Heart Institute of General Hospital (InCor HCFMUSP), Clinical Epidemiology Unit
name: Paulo Henrique A Guerra, Bachelor
role: PRINCIPAL_INVESTIGATOR
affiliation: University of São Paulo, School of Medicine, Children's Institute
name: Augusto Cesar F de Moraes, Bachelor
role: PRINCIPAL_INVESTIGATOR
References: