The use of GPS devices to monitor physical activity - potential and limits

Abstract

Physical activity (PA) is one of the factors that positively affect health. Recent studies confirm that the type of the built environment can influence the physical activity behaviour. This relationship can be examined by a variety of methods (questionnaires, pedometers and accelerometers). At present, use of geographic information systems (GIS) and satellite positioning systems such as the global positioning system (GPS) appears to be very appropriate. Using GPS devices can locate PA in space and time. This information can help us understand the issue of active lifestyle. The main objective of this study is to clarify the use of GPS technology for PA monitoring in the Czech Republic. PA monitoring using GPS devices was conducted in Olomouc in 2014. One-week measurement was performed by 160 students (63 boys) from three primary schools. PA intensity was monitored by ActiGraph GT3X and localized by GPS logger Holux RCV-3000. The combination of data from the accelerometer and GPS logger allows us to predict more easily where and at what intensity level the participants were active. Data imported into GIS can be analyzed and compared with the type of environment. We can easily estimate the influence of environmental elements such as parks or bike paths to the structure of participants' PA. The use of GPS devices can very effectively contribute to the localization of PA and facilitate formulation of recommendations to promote PA in municipal practice. Such recommendations can be helpful in improving health of the population. However, usage of these devices in practice has many restrictions such as inaccuracy, battery capacity, slow first satellite connection and negative participants' attitude towards this type of research.