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Master Thesis

Effets d’une intervention visant à réduire les niveaux d’activité sédentaire chez des enfants de 2e et 5e années d’école primaire

Abstract : Context: In recent years, our attention has turned to the dangers of sedentary living. This is defined as being sitting or lying during waking hours with a very low energy expenditure. This sedentary lifestyle favors the appearance of various chronic pathologies. This is why means of action have been put in place, such as school-based interventions that are considered more effective and more universally applicable, thus making it possible to combat the low level of activity. Objective: To carry out a descriptive analysis of the levels of sedentary activity in children of 2nd and 5th years of primary education in Tarbes. Method: Our study took place in two primary schools (JJR and JV) near Tarbes. The target audience was children from the CP level to the CM2 level. After a period of diagnosis, each child was given an accelerometer that was to be worn over a period of 10 days. For this, a sampling frequency (called "epoch") had been pre-established with threshold values corresponding to the daily time of the wearing of the accelerometer of each child (called "cut-points"). Moreover, as far as MVPA measurement is concerned, it is preferable to use the Evenson values, expressed in counts. For sedentary activity, it is measured for a value of less than 25 counts, light activity will be between 26-573 counts, moderate activity between 574-1002 counts and vigorous activity will be greater than 1003 counts. In this study, the statistics are calculated through a 2X2 ANOVA. With one main inter-subject factor (school) and the second factor (time), no difference was made between classes and sexes. Results: For filtered sedentary time (total), there is a significant difference between the two schools at T2 (p = 0.02) while it no longer exists at T4. Overall, the main effect of the school factor is significant p <.001. JV has higher scores than JJR. As a result, JV is more sedentary than JJR. If we take only the main time effect independently of the school effect, this factor does not appear significant for the filtered sedentary time (SEDF) as well as for the sedentary school time (SEDS). Conclusion: Our intervention in both schools did not produce the desired effect. In addition, in some cases, the level of sedentarity has increased.
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https://dumas.ccsd.cnrs.fr/dumas-02189222
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Submitted on : Friday, February 21, 2020 - 9:58:09 AM
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Chloé Delaplace. Effets d’une intervention visant à réduire les niveaux d’activité sédentaire chez des enfants de 2e et 5e années d’école primaire. Sciences du Vivant [q-bio]. 2019. ⟨dumas-02189222⟩

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