Purpose: The Mile Run/Walk test (MRW) is commonly used to assess students’ cardiovascular fitness as a component of the FITNESSGRAM. The formula to convert MRW times into predicted VO2max incorporates Body Mass Index (BMI). This study examines whether the MRW is an appropriate tool to employ among overweight ...
Purpose: The onboard accelerometers and global positioning system (GPS) receivers on modern smartphones offer considerable promise for the unobtrusive tracking of physical activity (PA) in population research; however, the accuracy of smartphone sensors for assessing PA is uncertain. The purpose of this study was to compare estimates of PA and ...
Purpose: To examine the associations of weekday and weekend day sedentary time with depressive symptoms and explore employment status and demographic variables as moderators. Methods: Participants (N = 884; Mean age = 46.0 SD 10.5) were recruited from neighborhoods varying by walkability and income. Participants wore Actigraph accelerometers for 7 days. Daily average sedentary time (counts ...
Purpose: The aim of this study was to compare common reduction algorithms for ActiGraph accelerometer data using three software packages in order to identify their impact on the number of subjects with valid data. Methods: 200 adolescents from the UP&DOWN Study wore the GT1M and GT3X ActiGraph ...
Purpose: This study compared sitting, standing, and stepping classifications from thigh-worn Actigraph and ActivPAL monitors under laboratory and free-living conditions. Methods: Adults wore both monitors on the right thigh while performing 6 sitting, 2 standing, 8 stepping, and 1 cycling activity under laboratory observation (n=21), and during three days free-living (n=18). Percent of time ...
Purpose: Limitations in monitoring of physical activity (PA) call for the application of triangulation approaches. The goal of the study is to present a verified triangulation approach to monitor daily PA in adolescents on an example of selected characteristics of PA and to suggest how to interpret the data more ...
Purpose: To quantify the proportion (%) of time spent in different body positions within incremental bands of accelerometer determined cadence (steps/min). Methods: This was a secondary analysis of SenseCam camera images and ActiGraph GT3X+ accelerometer data concurrently worn during waking hours by 40 adults (70% male; 36±12 years-old; BMI=23±3 kg/m2) for 3...
Purpose: To investigate whether time spent outdoors measured objectively by a person wearing a camera is positively related to objectively measured physical activity (PA) time and intensity in adults. Methods: Adults (N=62, 21-82 years old) wore an ActiGraph accelerometer and Sensecam for 1 to 8 days. Sensecam images were annotated for indoor ...
Purpose: To examine (1) associations between objectively measured physical activity (PA) and Subjective Wellbeing (SWB), (2) associations between objectively measured Sedentary Behavior (SB) and SWB; and (3) whether the relationship of PA and SB with SWB varies by PA or SB measurement method (objective vs. self-report). Methods: 146 adult Latinas recruited to a PA ...
Purpose: Habit formation offers an innovative technique for promoting long-term behavior change and consistency in the timing of a target behavior is thought to be important to initiating and learning a new habit. The aim of this analysis was to assess whether consistency of exercise timing was associated with overall ...