Objective To study the relation between sleep habits, nutritional status, growth and maturation in a group of African adolescent girls. The main hypothesis to be tested was that sleep length could be an effective way to spare energy, and thus malnourished girls sleep longer than normal girls. Design Three repeated ...
Sleep occupies approximately one third of our lives yet its modem study has largely been restricted to the use of the polygraph and to self-report via sleep logs. Actigraphy is a method for obtaining objective behavioral samples of nocturnal as well as diurnal activity. Activity is continuously measured and recorded ...
Objective To examine the relationship between pubertal timing and physical activity. Study Design A longitudinal sample of 143 adolescent girls was assessed at ages 11 and 13 years. Girls' pubertal development was assessed at age 11 with blood estradiol levels, Tanner breast staging criteria, and parental report of pubertal development. Girls were classified as ...
Objective To examine how travel by walking before and after school contributes to total physical activity of adolescent girls. Design Cross-sectional sample. Setting 36 middle schools from Arizona, Maryland, Minnesota, New Orleans, San Diego and South Carolina participating in the Trial of Activity for Adolescent Girls (TAAG). Participants—1721 6th grade girls ...
Objectives This study evaluated a neighborhood environment survey and compared the physical activity and weight status of the residents in two neighborhoods. Methods On two occasions 107 adults from neighborhoods with differing walkability were selected to complete a survey on their neighborhood environment. Physical activity was assessed by self-report and by ...
Self-report measures remain the most popular tool for measuring the habitual physical activity of large samples of children The Multimedia Activity Recall for Children and Adolescents (MARCA) is a computer delivered questionnaire which requires children to recall the previous 24-h in 5 min segments The MARCA retains the key features of ...
We examined the ability of the Computer Science Applications (CSA) accelerometer to predict energy expenditure during treadmill walking and stair stepping in nine children and adolescents with cystic fibrosis (CF) (mean age 12.1 yr, SD + 2.8) and ten healthy controls (mean age 10.8 yr. SD + 2.2). The accelerometer was attached above the hip and ...
Objective To highlight the discrepancies in accelerometry cut-off points of moderate-to-vigorous physical activity (MVPA) according to the definitions of Puyau et al. (MVPA(P)) and Trost et al. (MVPA(T)). Research Methods and Procedures Forty-five children from 8 to 11 years old were monitored with the ActiGraph (ActiGraph, LLC, Fort Walton Beach, ...
Purpose The main objective of the present study was to determine the extent to which objectively measured aerobic fitness (VO2mSX) was predictive of bone mineral density (BMD) in 237 middle-aged women. Additional aims were to determine the extent to which differences 3n age, body weight, and objectively measured physical activity ...
There is increasing public health concern that levels of physical activity in children are extremely low. This study aimed to describe objectively levels of physical activity and sedentary behaviour during the waking hours in a sample of 4-5 year old (median 5.4 years range 4.3, 6.0) rural Irish children (n=41) and to test ...