Comparison of marker models for the analysis of the volume variation and thoracoabdominal motion pattern in untrained and trained participants

Respiratory assessment and the biomechanical analysis of chest and abdomen motion during

that it allows analysis of compartmental breathing volumes, thoraco-abdominal patterns,

literature, mainly, two marker models are reported, a full marker model of 89 markers placed on

post-process a large number of markers on the trunk can be time-consuming. In this study, the

to evaluate i) their capability to obtain respiratory parameters (breath-by-breath tidal volumes)

between compartments) during quiet breathing, and ii) their response in different groups such as

>0.93), the reduced model underestimated the trunk volume compared with the 89 marker model. The

showed that the model did not influence the evaluation of compartmental contributions and the

groups. Our findings showed that the reduced marker model could be used to analyse the

estimating tidal volume.