Longitudinal and secular trends in physical activity and sedentary behavior during adolescence

Division of Epidemiology and Community Health, University of Minnesota, 1300 S 2nd St, WBOB Suite 300, Minneapolis, MN 55454-1015, USA.
PEDIATRICS (Impact Factor: 5.3). 01/2007; 118(6):e1627-34. DOI: 10.1542/peds.2006-0926
Source: PubMed

ABSTRACT There is little epidemiologic research on longitudinal and secular trends in weight-related health behaviors throughout the stages of adolescence. In particular, few data are available to assess secular trends in various sedentary behaviors. The objective of this research was to investigate longitudinal and secular trends in physical activity and sedentary behavior in a large, diverse cohort of adolescents.
Project EAT-II is a 5-year longitudinal study (N = 2516) that includes 2 cohorts that allow for the observation of longitudinal changes from early to midadolescence (junior high to high school; n = 806; mean baseline age: 12.8 +/- 0.8 years) and mid- to late adolescence (high school to post-high school; n = 1710; mean baseline age: 15.8 +/- 0.8 years). EAT-II also examined secular trends in health behavior from 1999 to 2004 in midadolescence. The main outcome measures of the mixed-model regression analyses used in this research were self-reported weekly hours of moderate to vigorous physical activity, television/video viewing, and leisure-time computer use.
Our findings indicate substantial longitudinal changes in moderate to vigorous physical activity, particularly among girls (decreasing 5.9-4.9 hours/week from early to midadolescence and 5.1-3.5 hours/week from mid- to late adolescence), and leisure-time computer use, particularly among boys (increasing 11.4-15.2 hours/week from early to midadolescence and 10.4-14.2 hours/week from mid- to late adolescence). Secular trends further indicate dramatic increases in midadolescent computer use from 1999 to 2004; girls increased from 8.8 to 11.1 hours/week, and boys increased from 10.4 to 15.2 hours/week.
These adolescents experienced unfavorable shifts in activity patterns, such as longitudinal decreases in moderate to vigorous physical activity, coupled with longitudinal and secular increases in leisure-time computer use. Developing effective health promotion strategies that address a wide array of changing behavioral patterns will be important in promoting long-term health and active lifestyles among adolescents and young adults.

1 Follower
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The college years offer an opportunity for new experiences, personal freedom, and identity development; however, this period is also noted for the emergence of risky health behaviors that place college students at risk for health problems. Affiliation with on-campus organizations such as fraternities or sororities may increase a students' risk given the rituals and socially endorsed behaviors associated with Greek organizations. In this study, we examined alcohol and drug use, smoking, sexual behavior, eating, physical activity, and sleeping in 1,595 college students (n = 265 Greek members, n = 1,330 non-Greek members). Results show Greek members engaged in more risky health behaviors (e.g., alcohol use, cigarette smoking, sexual partners, and sex under the influence of alcohol or drugs) than non-Greek members. Greek and non-Greek members did not differ in condom use, unprotected sex, eating, and physical activity behaviors. Implications for prevention and intervention strategies among Greek members are discussed.
    Journal of Behavioral Medicine 03/2008; 31(1):61-70. DOI:10.1007/s10865-007-9136-1 · 3.10 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Los profesionales de la Educación Física estamos obligados a proponer nuevos contenidos deportivos que motiven al alumnado y, que contribuyan de manera real y efectiva al desarrollo del currículum de área. En el presente artículo se presenta un contenido deportivo totalmente novedoso para el alumnado de Secundaria, el tchoukball. En primer lugar, justificamos la presencia de este deporte en las clases de Educación Física teniendo en cuenta determinados aspectos relacionados con la práctica deportiva de los sujetos durante la etapa de Secundaria. A continuación, nos centramos en el reglamento básico de esta disciplina deportiva, además proponemos una serie de adaptaciones, tanto del reglamento como de los materiales necesarios para la práctica del mismo, con el objetivo de que su desarrollo sea más acorde a las características del contexto. Para finalizar, se concluye el trabajo con una propuesta de actividades didácticas y algunas reflexiones a modo de conclusión
  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives. We assessed disparities in weight and weight-related behaviors among college students by sexual orientation and gender. Methods. We performed cross-sectional analyses of pooled annual data (2007-2011; n = 33 907) from students participating in a Minnesota state-based survey of 40 two- and four-year colleges and universities. Sexual orientation included heterosexual, gay or lesbian, bisexual, unsure, and discordant heterosexual (heterosexuals engaging in same-sex sexual experiences). Dependent variables included weight status (derived from self-reported weight and height), diet (fruits, vegetables, soda, fast food, restaurant meals, breakfast), physical activity, screen time, unhealthy weight control, and body satisfaction. Results. Bisexual and lesbian women were more likely to be obese than heterosexual and discordant heterosexual women. Bisexual women were at high risk for unhealthy weight, diet, physical activity, and weight control behaviors. Gay and bisexual men exhibited poor activity patterns, though gay men consumed significantly less regular soda (and significantly more diet soda) than heterosexual men. Conclusions. We observed disparities in weight-, diet-, and physical activity-related factors across sexual orientation among college youths. Additional research is needed to better understand these disparities and the most appropriate intervention strategies to address them. (Am J Public Health. Published online ahead of print November 13, 2014: e1-e11. doi:10.2105/AJPH.2014.302094).


Available from