Effect of sandbag breathing exercise on respiratory parameters and lumbar stability in asymptomatic individuals - An experimental study

This study evaluated the effect of sandbag breathing exercise on respiratory parameters and lumbar stability in 43 healthy subjects aged 20–25 years. As part of the study, lung function testing (FEV1, FVC, and FEV1/FVC ratio) was assessed using the Vitalograph COPD-6 device.