Introduction Self-reported sleep duration is widely used but may not provide accurate information. Correlations between objective estimates of sleep and self-reported data only demonstrate if a relationship is present but do not determine if the two measures agree. We sought to determine levels of agreement between two self-reported average weekday ...
Introduction Physical activity (PA), sedentary behavior (SB) and sleep form the behavioral tripartite of energy expenditure and appear inter- and independently related to cardiometabolic disease and cancer. The ability to collect valid data on all three behaviors contemporaneously using one type of accelerometer is important because it may improve our ...
Purpose Increased all-cause mortality has been consistently associated with longer (8-10 hours+) self-reported sleep duration. The possibility that longer sleep may impact survival through inactive lifestyles was proposed by Morgan (2007), and subsequently tested by Hartescu et al (2012) who concluded that, independent of health status, longer sleep duration, and the inevitably ...
A physically active lifestyle and quality sleep are associated with lower risk for
obesity and cardiovascular disease. Cross-sectional studies demonstrate that greater
physical activity (PA) is associated with better quality sleep. However, few studies
have examined this relationship using objective measures. Additionally, few studies
have examined the directionality of the ...
Optimal sleep duration (7-8h), moderate-to-vigorous intensity physical activity
(MVPA) and light-intensity activity are beneficially associated with cardiometabolic
outcomes and related biomarkers, while sedentary time and long (≥9h) or short (<7h)
sleep duration are detrimentally associated.
Purpose This study examined whether sleep duration modified the relationship
between both sedentary/...
Objective The purpose of this study was to examine the relationship between sleep (duration and quality) and diet quality among young adult women. Subjects: Three-hundred seventy-five women (18-24 years) were recruited to participate in the study.
Measurement Each participant wore an actigraph for 7 consecutive nights to measure sleep. Sleep logs ...
Purpose To examine the energy balance pathways of diet and physical activity under conditions of acute sleep deprivation in normal-weight and obese women.
Methods In counter-balanced fashion, 22 normal-weight (30.9±9.5 yrs, 22.0±1.6 kg/m2) and 18 obese (29.7±10.7 yrs, 36.4±5.3 kg/m2) women, with a consistent sleep-wake cycle, completed two separate free-living sleep conditions (Condition 1: one ...
Purpose Accelerometers could potentially be used to assess physical activity and sleep using the same monitor; however, two different positions are typically used for the assessment of physical activity and sleep (waist and wrist, respectively). The aim of this study is to evaluate the concordance between wrist- and waist-worn Actigraphs ...
Background:
The aim of this study is to describe the relationship between objective measures of sleep, physical activity and BMI in Swedish pre-adolescents. The day-to-day association between physical activity and sleep quality as well as week-day and weekend pattern of sleep is also described.
Method:
We conducted a cross sectional ...
Objective The purpose of this study was to examine the effect that sleep duration and quality has on next day physical activity among a population of young adult women. Subjects: Three-hundred and seventy-five women (18-24 yrs) were recruited to participate in the study.
Measurements Each participant wore an accelerometer for 7 ...