Author's response to reviews Title: Secular Trends: A Ten-Year Comparison of the Amount and Type of Physical Activity and Inactivity in Adolescents Authors:
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چکیده
results: “Regarding girls, only for the entire sample, these is a secular decrease in the duration of physical inactivity”: This is unclear: girls versus entire sample? • This has now been amended. This sentence has now been clarified (pp. 2-3). Abstract: conclusions: younger cohort (1998-2000): should this not be (2008-2010)? • This has now been amended (p. 3, Line 7). conclusions: younger cohort (1998-2000): should this not be (2008-2010)? • This has now been amended (p. 3, Line 7). Formulation of the 3 last objectives: It seems impossible to me to assess secular trends by cohort as differences between cohorts are investigated while assessing secular trends. • This point has been clarified above. There exists a body of literature which assessed secular trends using comparison of two cohorts (younger and older) – 2 cross-sectional studies Raustorp A, Ekroth Y: Eight-year secular trends of pedometer-determined physical activity in young Swedish adolescents. Journal of Physical Activity & Health 2010, 7(3):369-374. Raustorp A, Ludvigsson J: Secular trends of pedometer-determined physical activity in Swedish school children. Acta Paediatrica 2007, 96(12):1824-1828. Hardy LL, Okely AD, Dobbins TA, Booth ML: Physical activity among adolescents in New South Wales (Australia): 1997 and 2004. Medicine & Science in Sports & Exercise 2008, 40(5):835-841. Moliner-Urdiales D, Ruiz JR, Ortega FB, Jiménez-Pavón D, Vicente-Rodriguez G, Rey-López JP, Martínez-Gómez D, Casajús JA, Mesana MI, Marcos A et al: Secular trends in health-related physical fitness in Spanish adolescents: The AVENA
منابع مشابه
Secular trends: a ten-year comparison of the amount and type of physical activity and inactivity of random samples of adolescents in the Czech Republic
BACKGROUND An optimal level of physical activity (PA) in adolescence influences the level of PA in adulthood. Although PA declines with age have been demonstrated repeatedly, few studies have been carried out on secular trends. The present study assessed levels, types and secular trends of PA and sedentary behaviour of a sample of adolescents in the Czech Republic. METHODS The study comprised...
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Author's response to reviews Title: Physical activity, cardiorespiratory fitness, and metabolic syndrome in adolescents: a cross-sectional study. Authors:
Title: Physical activity, cardiorespiratory fitness, and metabolic syndrome in adolescents: a cross-sectional study.
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Background: Following socioeconomic development, the amount of physical inactivity among a given population has typically increased. Physical inactivity is a risk factor for cardiovascular disease. The purpose of this study is to measure the prevalence of physical inactivity among the urban adult population of Yazd, Iran.Methods: This cross-sectional study was carried out on an urban population...
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