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Author's response to reviews Title : Influence of Socio-Economic Status on Habitual Physical Activity and Screen Time in Children
| Content Provider | Semantic Scholar |
|---|---|
| Author | Drenowatz, Clemens Eisenmann, Joey C. Pfeiffer, Karin A. Welk, Greg J. Heelan, Kate A. Pafitis, Natalie |
| Copyright Year | 2010 |
| Abstract | 2.2. This statement has been changed and clarified to better lead into the purpose of this study. 2.3. The mean age of both cohorts is now included in the abstract and the methods section. 2.4. It is now pointed out that screen-time reported by the child was used for analysis. 2.5. The importance of various covariates is addressed in the main manuscript. Addressing the inconsistency of previous findings concerning the relationship between SES and physical activity should suffice at this point. 2.6. The order of results reported has been changed – starting with physical activity levels. Background 2.7 The sentence has been changed accordingly – “high” has been deleted. Methods 2.8. The number of people per household was not available for analysis. This problem is now addressed in the paper. 2.9. It is addressed in the paper that physical activity as well as sedentary behavior is a complex behavior and, therefore, additional components that potentially influence these behaviors need to be considered. Since previous studies did not emphasize this aspect, it specifically pointed out in this paper, but it did not change the overall purpose of the study. 2.10. It has been clarified that child-report of sedentary bahvior was used. 2.11. All subjects who were compliant on the physical activity portion also provided information about household income. This did not limit the number of subjects included in data analysis. 2.12. Bassett is now cited properly and included in the reference list. A reference for the step-test has been added as well, and in the methods section (participants) information on compliance of participants is given. 2.13. Units of measurements are now added in parenthesis for height and body mass. 2.14. Due to the homogeneity of either sample and no differences in age between SES groups, age was not considered as a covariate in the analysis. Results 2.15. Significant differences between SES groups are now shown by a star in the tables. Concerning sex, the number of males and females are explicitly shown for each group in the tables. Stature has been changed to height in the table. 2.16. See above. The MVPA terms are now explained in a footnote underneath the table. 2.17. Body size has been changed to BMI, since this includes height and weight. 2.18. The star in figure 3 indicates a difference from this group to al other groups as indicated in the legend. 2.19. A reference to figure 5 has now been added into the results text. 2.20. Figures 4 and 5 have been changed according to the referee’s suggestions. The text of the results section has been adjusted accordingly.. 2.21. Table 3 has been changed to table 2. Discussion 2.22. The Ball reference has been added as suggested by the referee. 2.23. One component of this paper was to show that physical activity levels can be influenced by environmental as well as biological components. Since more emphasis has been put on environmental aspects, it was considered worthwhile to emphasize the biological components in this paper. 2.24. Environmental constraints on physical activity are addressed more clearly in the discussion, but as previously stated biological aspects related to physical activity need to be considered when examining the role of physical activity and sedentary behavior on public health. 2.25. Blanc’s results are based on human subjects. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://static-content.springer.com/openpeerreview/art:10.1186%2F1471-2458-10-214/12889_2009_2125_AuthorComment_V2.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
