Charlotte L. Ridgway

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BACKGROUND Detailed associations between physical activity (PA) subcomponents, sedentary time, and body composition in preschoolers remain unclear. OBJECTIVE We examined the magnitude of associations between objectively measured PA subcomponents and sedentary time with body composition in 4-y-old children. DESIGN We conducted a cross-sectional study in(More)
OBJECTIVE To assess adolescent PA awareness and investigate associations with biological and psychosocial factors. DESIGN Cross-sectional from November 2005 to July 2007 (ROOTS study). SETTING Population-based sample recruited via Cambridgeshire and Suffolk schools (UK). PARTICIPANTS N=799 (44% male, 14.5±0.5 years). MAIN EXPOSURES Self-rated PA(More)
Animal models suggest growth restriction in utero leads to lower levels of motor activity. Furthermore, individuals with very low birth weight report lower levels of physical activity as adults. The aim of this study was to examine whether birth weight acts as a biological determinant of physical activity and sedentary time. This study uses combined(More)
BACKGROUND Few studies have quantified levels of habitual physical activity across the entire intensity range. We aimed to describe variability in total and intensity-specific physical activity levels in UK adolescents across gender, socio-demographic, temporal and body composition strata. METHODS Physical activity energy expenditure and minutes per day(More)
OBJECTIVE Lower birth weight has been associated with a greater risk of metabolic diseases. The aim of this study was examine whether physical activity and aerobic fitness may modify associations between birth weigh and metabolic risk. RESEARCH DESIGN AND METHODS The European Youth Heart Study is a population-based study of 9 and 15 year olds (n = 1,254).(More)
BACKGROUND Motor proficiency is positively associated with physical activity levels. The aim of this study is to investigate associations between the timing of infant motor development and subsequent sports participation during adolescence. METHODS Prospective observational study. The study population consisted of 9,009 individuals from the Northern(More)
PURPOSE Adult physical performance is recognized as a marker of both current physical capacity and future health. The aim of the study was to examine the independent influences of birth weight, infant weight gain, and infant motor development on a variety of adult physical performance outcomes, in terms of muscular strength, muscular endurance, and aerobic(More)
OBJECTIVE To examine whether wearing a pedometer was associated with higher objectively-measured physical activity (PA) among adolescents independent of other behavior change strategies, and whether this association differed by sex or day of wear. METHOD In a parallel-group population-based cohort study, 892 adolescents (43.4% male, mean±SD age,(More)
OBJECTIVE The objective of this study was to investigate whether objectively measured sedentary time and sleep duration are associated with changes in adiposity from mid- to late adolescence. METHODS Students (n = 504, 42% boys) were recruited from schools in Cambridgeshire, UK. At baseline (mean age 15.0 ± 0.3 years), sedentary time was objectively(More)
BACKGROUND Self-reported physical activity (PA) and sleep duration (SLP) change markedly throughout adolescence. We sought to quantify changes in objectively-measured PA, sedentary time (ST) and SLP through adolescence, and to investigate baseline body composition and baseline activity levels as determinants of change. METHODS Individually calibrated(More)