• Reactivity to Accelerometer Measurement of Children and Adolescents 

      Ruch, Nicole; Joss, Franziska; Jimmy, Gerda; Melzer, Katarina; Hänggi, Johanna; Mäder, Urs (2013-11-11)
      Awareness of being monitored can influence participants' habitual physical activity behavior. This reactivity effect may threaten the validity of physical activity assessment. The aim of this study was to investigate whether ...