Physical activity of Czech schoolchildren in the autumn season
Keywords:accelerometry, actigraph, children
The aim of the study was to measure and subsequently evaluate the quantitative and qualitative factors of physical activity (PA) of primary school pupils in the Czech Republic in the autumn period using an objective method and to assess whether these factors differ significantly before and after clock shift from the summer time (Daylight Savings Time) to winter time. The data were acquired from 37 pupils (20 boys, 17 girls) aged 10–13, at primary schools in Brno (CZE) in the period from 22 October to 26 October 2014 and subsequently from 12 November to 16 November 2014. PA was measured using the Actigraph GT3X accelerometer (Actigraph corp., USA) in the week when the clocks were changed, on 26 October 2014 and two weeks later. Three business days and two weekend days were measured. The monitored characteristics included those related to energy output, movement time according to intensity and the number of steps. Changes in measured characteristics after the clock shift were tested statistically using Wilcoxon signed-rank test. Throughout the business days the pupils demonstrated more than med > 10000 steps a day and MVPA did not fall under med > 60 min/day. However, during the weekend these values did not exceed 6600 steps a day 39 min MVPA/day. When comparing the results of all the investigated PA factors before and after the clock shift, significant differences have been found only in boys during business days for moderate PA (p = 0.02) and MVPA (p = 0.04). The study has revealed substantial differences between PA of children during business days when compared to days off in the autumn period. However, the changes in the PA structure before and after the winter clock shift have only been diagnosed at the level of moderate PA and MVPA in boys, even though the daytime duration has been reduced significantly by more than one hour from 10 hours 23 minutes before to 9 hours and 16 minutes after the clock shift.
How to Cite
Copyright (c) 2020 Journal of Human Sport and Exercise
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Each author warrants that his or her submission to the Work is original and that he or she has full power to enter into this agreement. Neither this Work nor a similar work has been published elsewhere in any language nor shall be submitted for publication elsewhere while under consideration by JHSE. Each author also accepts that the JHSE will not be held legally responsible for any claims of compensation.
Authors wishing to include figures or text passages that have already been published elsewhere are required to obtain permission from the copyright holder(s) and to include evidence that such permission has been granted when submitting their papers. Any material received without such evidence will be assumed to originate from the authors.
Please include at the end of the acknowledgements a declaration that the experiments comply with the current laws of the country in which they were performed. The editors reserve the right to reject manuscripts that do not comply with the abovementioned requirements. The author(s) will be held responsible for false statements or failure to fulfill the above-mentioned requirements.
This title is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license (CC BY-NC-ND 4.0).
You are free to share, copy and redistribute the material in any medium or format. The licensor cannot revoke these freedoms as long as you follow the license terms under the following terms:
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
NonCommercial — You may not use the material for commercial purposes.
NoDerivatives — If you remix, transform, or build upon the material, you may not distribute the modified material.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.
Transfer of Copyright
In consideration of JHSE’s publication of the Work, the authors hereby transfer, assign, and otherwise convey all copyright ownership worldwide, in all languages, and in all forms of media now or hereafter known, including electronic media such as CD-ROM, Internet, and Intranet, to JHSE. If JHSE should decide for any reason not to publish an author’s submission to the Work, JHSE shall give prompt notice of its decision to the corresponding author, this agreement shall terminate, and neither the author nor JHSE shall be under any further liability or obligation.
Each author certifies that he or she has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article, except as disclosed on a separate attachment. All funding sources supporting the Work and all institutional or corporate affiliations of the authors are acknowledged in a footnote in the Work.
Each author certifies that his or her institution has approved the protocol for any investigation involving humans or animals and that all experimentation was conducted in conformity with ethical and humane principles of research.
Biomedical journals typically require authors and reviewers to declare if they have any competing interests with regard to their research.
JHSE require authors to agree to Copyright Notice as part of the submission process.