Research Database

303 results for "Activity and Environment"

Children's Physical Activity: Findings of Accelerometry and GPS Monitoring

  • Published on 04/22/2010

There is growing recognition of the role of the environment in influencing health and health behaviours, and an environment that encourages excess energy intake and reduced energy expenditure is widely considered to be a driving force behind population-wide weight gain. Expert bodies have highlighted the importance of environmental factors on ...


Utility of Accelerometers to Measure Physical Activity in Children Attending an Obesity Treatment Intervention

  • Added on October 3, 2010

Objectives To investigate the use of accelerometers to monitor change in physical activity in a childhood obesity treatment intervention. Methods 28 children aged 7–13 taking part in “Families for Health” were asked to wear an accelerometer (Actigraph) for 7-days, and complete an accompanying activity diary, at baseline, 3-months and 9-months. Interviews with 12 ...


Comparison of Three Methods for Measuring the Time Spent in Physical Activity

  • Published on September 2000

Purpose Three methods for measuring time spent in daily physical activity (PA) were compared during a 21-d period among 83 adults (38 men and 45 women). Methods Each day, participants wore a Computer Science and Applications, inc (CSA) monitor and completed a 1-page, 48-item PA log that reflected time spent in household, occupational, ...


Comparison of Pedometer and Accelerometer Measures of Free-Living Physical Activity

  • Published on 2002

Purpose The purpose of this investigation was 1) to evaluate agreement between dual-mode CSA accelerometer outputs and Yamax pedometer outputs assessed concurrently under free-living conditions; 2) to determine the relationship between pedometer-steps per day and CSA-time spent in inactivity and in light-, moderate-, and vigorous-intensity activities; and 3) to identify a value of ...


Comparison of Pedometer and Accelerometer Accuracy Under Controlled Conditions

  • Published on May 2003

Purpose The purpose of this investigation was to compare the concurrent accuracy of the CSA accelerometer and the Yamax pedometer under two conditions: 1) on a treadmill at five different speeds and 2) riding in a motorized vehicle on paved roads. Methods In study 1, motion sensor performance was evaluated against actual steps ...


Comparison of MTI Accelerometer Cut-points For Predicting Time Spent in Physical Activity

  • Published on May 2003

Purpose The purpose of this study was to establish the accuracy of five published accelerometer regression equations that predict time spent in different intensity classifications during free-living activities. Methods Ten participants completed physical tasks in a field setting for a near-continuous 5 - 6 h-period while oxygen uptake and accelerometer data were ...


Comparison of Activity Monitors to Estimate Energy Cost of Treadmill Exercise

  • Published on July 2004

Purpose To evaluate the validity of five physical activity monitors available for research: the CSA, the TriTrac-R3D, the RT3, the SenseWear Armband, and the BioTrainer-Pro. Methods A total of 10 healthy men and 11 healthy women performed 10 mm of treadmill walking at 54, 80, and 107 m·min-1 and treadmill running at 134, 161, 188, and 214 m·...


Comparison of Two Accelerometers for Assessment of Physical Activity in Preschool Children

  • Published on 2004

Purpose The primary aim of this study was to test the validity of two accelerometers, CSA/MTI WAM-7164 and Actiwatch, against direct observation of physical activity using the Children’s Physical Activity Form (CPAF). Methods CSA/MTI WAM-7164 and Actiwatch accelerometers simultaneously measured activity during structured-play classes in 3- to 4...



Commuting to School: Are Children Who Walk More Physically Active?

  • Published on 2003

Background The journey to school is an opportunity for increasing children’s daily physical activity. However, the contribution that active commuting to school makes to overall physical activity is unknown. This study used objective measurement to investigate the physical activity patterns of children by mode of travel To school. Methods ...