Patterns and predictors of sitting time over ten years in a large population-based Canadian sample: Findings from the Canadian Multicentre Osteoporosis Study (CaMos)

Abstract

Our objective was to describe patterns and predictors of sedentary behavior (sitting time) over 10 years among a large Canadian cohort. Data are from the Canadian Multicentre Osteoporosis Study, a prospective study of women and men randomly selected from the general population. Respondents reported socio-demographics, lifestyle behaviors and health outcomes in interviewer-administered questionnaires; weight and height were measured. Baseline data were collected between 1995 and 1997 (n = 9418; participation rate = 42%), and at 5- (n = 7648) and 10-year follow-ups (n = 5567). Total sitting time was summed across domain-specific questions at three time points and dichotomized into “low” (≤ 7 h/day) and “high” (> 7 h/day), based on recent meta-analytic evidence on time sitting and all-cause mortality. Ten-year sitting patterns were classified as “consistently high”, “consistently low”, “increased”, “decreased”, and “mixed”. Predictors of sedentary behavior patterns were explored using chi-square tests, ANOVA and logistic regression. At baseline (mean age = 62.1 years ± 13.4) average sitting was 6.9 h/day; it was 7.0 at 5- and 10-year follow-ups (p for trend = 0.12). Overall 23% reported consistently high sitting time, 22% consistently low sitting, 14% decreased sitting, 17% increased sitting with 24% mixed patterns. Consistently high sitters were more likely to be men, university educated, full-time employed, obese, and to report consistently low physical activity levels. This is one of the first population-based studies to explore patterns of sedentary behavior (multi-domain sitting) within men and women over years. Risk classification of sitting among many adults changed during follow-up. Thus, studies of sitting and health would benefit from multiple measures of sitting over time.

Progesterone for the prevention and treatment of osteoporosis in women

“…Reprinted with permission of Epidemiologic Reviews 24 . adequacy of energy intake for energy expenditure 44 , protein 45 , calcium and vitamin D 46 intakes, sedentary behavior 47 or physical activity 9 , adequacy of sleep and circadian rhythm 48 , and the psychosocial environment to rule out stress, threat, abuse, depression 49 and cognitive dietary restraint 21 (Figure 4). This section will discuss life phases before menopause during which cyclic progesterone may prevent osteoporosis.…”

Long‐term determinants of changes in television viewing time in adults: Prospective analyses from the Young Finns Study

“…Some reviews have summarized the plurality of potential influences on sedentary behavior, including TVtime. [19][20][21][22] Furthermore, few longitudinal studies have revealed the patterns and predictors of sitting time throughout adulthood, 23,24 suggesting that several factors and life events (eg, male gender, higher education, full-time employment, staying obese, and consistently low physical activity levels, and changing jobs, retiring, or illness) contribute to high sitting levels. Divergent associations were identified for different aged groups for women.…”

Comportamento sedentário na cidade de São Paulo: ISA-Capital 2015

“…Schooling was positively related to TST in this study. Other papers also found a positive association between schooling and sitting time 26 , as well as physical activity 24 . Namely, individuals with higher schooling are among the most exposed to sedentary behavior and the most physically active ones.…”