RT Journal Article SR Electronic A1 Sigmund, Erik A1 Frömel, Karel A1 Neuls, Filip T1 Physical activity of youth: Evaluation guidelines from the viewpoint of health support JF Acta Universitatis Palackianae Olomucensis. Gymnica YR 2005 VO 35 IS 2 SP 59 OP 68 UL https://gymnica.upol.cz/artkey/gym-200502-0008.php AB The main goal of this study is to develop guidelines for physical activity (PA hereafter) evaluation from the viewpoint of health support in Czech youth, based on 6 years of monitoring of PA with accelerometers and pedometers. For the guidelines proposal we used data from weekly triangular monitoring of PA (accelerometer Caltrac × pedometer Omron × individual logs = energy expenditure × steps × FITT characteristics of PA) in 1504 females and 1163 males aged 6 to 23. We expressed the guidelines by the means of relative values of active energy expenditure (kcal.kg-1.day-1) which enabled us to compare somatic different groups of females and males of different ages. Data analysis shows significant correlation (rS = .56 - .75) between the active energy expenditure from Caltrac (kcal.kg-1.day-1) and the steps from Omron (number.day-1) in both working and weekend days. The developed guidelines can help to evaluate the level of PA and to create effective interventional PA programs. To express the guidelines in a daily number of steps seems to be a good step towards their larger and more popular use.