Effect of single and double strap backpack on lung fuction

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      <subfield code="a">Carrying heavy and moderate military loads backpacks or as a body armour compresses the chest, causing a change in lung function that is typical of a restrictive ventilatory impairment.  This study examined Forced Vital Capacity , Forced Expiratory Volume in one second, and Peak Expiratory Flow  in 13 participants </subfield>
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