17th Annual ECSS-Congress, Bruges 2012

Abstract details

Abstract-ID: 703
Session: [MO-SH09] Physical Education & Pedagogics
Lecture room: G105
Date & time: 03.07.2014 / 14:00 - 15:00
Title of the paper: Accelerometer measured daily physical activity and sedentary pursuits - comparison between two models of the Actigraph
Authors: Tanha, T., Tornberg, ., Dencker, M., Wollmer, P.
Institution: Clinical Sciences
Department: Clinical Physiology
Country: Sweden
Abstract text Abstract Background: Physical activity is and will continue to be a very important factor for cardiovascular health. There are numerous studies on physical activity and in recent years accelerometry is accepted as an objective measurement method. New generation accelerometers are on the market and are used frequently and data and cut-off points from the old generation accelerometers are often used interchangeably. However, there is very few validation studies performed between different generations of the commonly used Actigraph accelerometers. Methods: We compared daily physical activity data generated from the old generation Actigraph model 7164 with the new generation Actigraph GT1M accelerometer in 15 randomly selected young females for eight consecutive days. Minutes per day of light, moderate and vigorous physical activity (LMVPA), moderate and vigorous physical activity (MVPA), vigorous physical activity (VPA) and very vigorous physical activity (VVPA) were calculated. Moreover, minutes of sedentary pursuits per day was calculated. Findings: There were significant (P<0.05) differences between the Actigraph 7164 and the GT1M concerning LMVPA (23749 vs. 22537 min/day), MVPA (6117vs. 5614 min/day), VPA (157 vs. 94 min/day) and VVPA (43 vs. 11 min/day). No significance was observed in data from mean minutes of sedentary pursuits between the two different models. Conclusions: Data from the old generation Actigraph 7164 and the new generation Actigraph GT1M accelerometers differ, where the Actigraph GT1M generates lower values for free living physical activity. Mean minutes sedentary time per day is not dependent accelerometer model. These results need to be taken into consideration when using these devices.
Topic: Training and Testing
Keyword I: Physical activity
Keyword II: Accelerometers
Keyword III: Youth