Figure 1 - 150 Years of Blowing: Since John Hutchinson

Figure 1) Silhouette of John Hutchinson and his spirometer, illustrating correct body positioning for performance of the vital capacity manoeuvre (Reproduced from reference 1)

Silhouette of John Hutchinson and his spirometer, illustrating correct body positioning for performance of the vital capacity manoeuvre (Reproduced from reference 1)

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Reference

150 Years of Blowing: Since John Hutchinson - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Silhouette-of-John-Hutchinson-and-his-spirometer-illustrating-correct-body-positioning_fig2_298432771 [accessed 21 Jun 2025]

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Figure 1) Silhouette of John Hutchinson and his spirometer, illustrating correct body positioning for performance of the vital capacity manoeuvre (Reproduced from reference 1)

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<a href="https://www.researchgate.net/figure/Silhouette-of-John-Hutchinson-and-his-spirometer-illustrating-correct-body-positioning_fig2_298432771"><img src="https://www.researchgate.net/publication/298432771/figure/fig2/AS:669630678986753@1536663803016/Silhouette-of-John-Hutchinson-and-his-spirometer-illustrating-correct-body-positioning.ppm" alt="Silhouette of John Hutchinson and his spirometer, illustrating correct body positioning for performance of the vital capacity manoeuvre (Reproduced from reference 1)"/></a>