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Backpack and ventilatory function

Backpack and ventilatory function

2883 руб.
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Most of the school children are carrying heavy backpacks frequently.Therefore,a serious concerns about the harmful effects of backpacks are growing.Backpack may influence the mechanics of breathing and subsequently reduce the ventilatory function.This book is highlighting the important of the normal breathing mechanics as much as possible for school children and emphasizing the proper backpack use.