The International Physical Activity Questionnaire (IPAQ-SF) has been validated and recommended as an efficient method to assess physical activity, but its validity has not been investigated in different population subgroups. We examined variations in IPAQ validity in the Hong Kong Chinese population by six factors: sex, age, job status, educational ...
Introduction
Feedback and monitoring physical activity (PA) may have a role decreasing sedentary behavior. The aim of this study was to test the effectiveness of a Polar Activity Computer (FA20, Polar Electro Oy, Kempele, Finland) in increasing PA in daily life over 6 month.
Method
50 volunteer healthy subjects were randomly assigned ...
Physical activity is an important factor for healthcare intervention delivery and clinical outcome measurement in rehabilitation medicine, rheumatology, aging and cardiovascular medicine. A psychological perspective in ambulatory behavior monitoring does focus on the relation between behavior (physical activity, posture, movement) and phenomena like mood or emotions. Whereas numberless studies propose ...
Introduction
The most popular accelerometers in physical activity research are the Actigraph uniaxial accelerometer (AGR, Model GT1M, Actigraph, Shalimar, CA) and the RT3 triaxial accelerometer (Stayhealthy Inc, Monrovia, CA). When a large population is evaluated at the same time, the use of several accelerometers is necessary. To be able ...
Introduction
It is important to understand the determinants of physical activity needed to influence policy and create environments that promote physical activity among preschool children. Physical activity levels were studied with the aims to compare outdoor and indoor activity and to analyze minutes spent in sedentary, light, moderate and vigorous ...
Introduction There is no consistency in the literature as to the amount of accelerometry monitoring time required to reliably determine habitual physical activity behaviour in preschool children. This study aims to identify how many days, and what percentage of time each day, of monitoring is required.
Methods Data from ActiGraph ...
Purpose
To examine the change in the average daily steps taken at different cadence (steps/min) levels when a change in total steps/day occurs.
Methods
A total of 43 people participated in a one week intervention with the goal to increase time spent in moderate-to-vigorous physical activity. Participants wore a ...
Introduction
Children have intermittent activity patterns and this must be considered when assessing activity with accelerometers. This study examines the impact of
accelerometer epoch duration on the recorded time spent in physical activity during recess. A second goal was to determine whether variability in activity is associated with overall time ...
Introduction
The use of motion sensors to objectively measure physical activity (PA) in young children has become increasingly common, due to the various advantages they have over other methods, such as parental report [1]. New and improved motion sensors are continuously being made available, leaving researchers with many methodological [1] and budgetary ...
Introduction With increasing interest in how the physical environment may influence physical activity, methods are needed that can be used to investigate the environmental context of activity. The aim of this study is to use combined accelerometer and GPS data to describe the level and location of children’s physical ...