Pulmonary Function Tests
Design Example: Application of Archimedes' Principle
Factorial Design
Group Design
Exercise Stress Test
Exercise and Muscle Performance
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Updated: Jan 28, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
Published on: August 24, 2019
Hanxue Liu1, Xiaolin Zhang, Yuxiang Zhang
1Department of Medical Intensive Care Unit, the Eighth Medical Center of the Chinese PLA General Hospital, Beijing 100091, China. Corresponding author: Zhang Xiaolin,
This study introduces an adjustable lung function exercise bottle for chronic obstructive pulmonary disease (COPD) patients. This device offers a cost-effective and convenient rehabilitation tool to improve lung function and quality of life.
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