breath training incentive spirometer inhalation exercise lung capacity physical therapy covid19
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An elderly woman blows into a special device - spirometer to train her lungs and test lung capacity. Close-up shot
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An elderly woman blows into a special device - spirometer to train her lungs and test lung capacity. Close-up shot
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Blowing Out Three Balls Incentive Spirometer Stock Footage Video (100% Royalty-free) 13724537 | Shutterstock
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Blowing Out Three Balls Incentive Spirometer Stock Footage Video (100% Royalty-free) 13724537 | Shutterstock
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