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BACKGROUND To create and find accurate and reliable instruments for the measurement of physical activity has been a challenge in epidemiological studies. We investigated the reliability and validity of two different physical activity questionnaires in 71 adolescents aged 13-18 years; the WHO, Health Behaviour in Schoolchildren (HBSC) questionnaire, and the(More)
BACKGROUND There is no standardized method for the assessment of physical activity (PA). Therefore it is important to investigate the validity and comparability of different measures. The International Physical Activity Questionnaire (IPAQ) has been developed as an instrument for cross-national assessment of PA and has been validated in 12 countries. These(More)
BACKGROUND A large health survey was previously conducted in 1984-86, the Nord-Trøndelag Health Study (HUNT 1), and another was conducted in 1995-97 (HUNT 2). A third, HUNT 3, started in 2006. However, the physical activity (PA) questionnaires have not yet been validated. AIMS To assess the reliability and validity of the self-reported physical activity(More)
BACKGROUND To validate the physical activity (PA) questionnaire in Nord-Trøndelag Health Study (HUNT 2). METHODS The questionnaire was administered twice to a random sample of 108 men aged 20-39 and validity by comparing results with VO(2max) and ActiReg, measuring PA and energy expenditure and with the International Physical Activity Questionnaire(More)
PURPOSE To study if physical activity within the recommended level over time was associated with risk of developing depression after the first myocardial infarction in older adults. METHODS Men (n = 143) and women (n = 46) who had reached the age of 60 years in 2006-2008 who participated in the Nord-Trøndelag Health Study (HUNT1, 1984-1986; HUNT2,(More)
PURPOSE The purpose of this prospective population-based study was to analyze predictors of changes in physical activity (PA) levels from early to late adolescence. METHODS Data presented are from 2,348 adolescents and their parents who participated in the Nord-Trøndelag Health study (HUNT 2, 1995-1997) and at follow-up in Young-HUNT 2, 2000-2001(More)
BACKGROUND Little is known about the effect maintaining physical activity throughout adolescence has on cardiovascular risk factors and health status in early adulthood. This ten-year prospective longitudinal study investigated whether differences in physical activity patterns from adolescence to young-adulthood showed different associations with subsequent(More)
BACKGROUND Current evidence concerning sedentary behaviour and mortality risk has used single time point assessments of sitting. Little is known about how changes in sitting levels over time affect subsequent mortality risk. AIM To examine the associations between patterns of sitting time assessed at two time points 11 years apart and risk of all-cause(More)
We examined the association between sitting time and diabetes incidence, overall and by strata of leisure-time physical activity and BMI. We followed 28,051 adult participants of the Nord-Trøndelag Health Study (the HUNT Study), a population-based study, for diabetes incidence from 1995–1997 to 2006–2008 and estimated HRs of any diabetes by categories of(More)
OBJECTIVE To examine whether physical activity (PA) moderates the association between alcohol intake and all-cause mortality, cancer mortality and cardiovascular diseases (CVDs) mortality. DESIGN Prospective study using 8 British population-based surveys, each linked to cause-specific mortality: Health Survey for England (1994, 1998, 1999, 2003, 2004 and(More)