Activation of the parasternal intercostals during breathing efforts in human subjects

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Population

4 normal human subjects

Design

Other

Authors

Discussion

Central drive, not reflexes, governs parasternal activity in quiet breathing; leaves open extension to disease states or clinical monitoring.

Population

4 normal human subjects

Intervention

Various inspiratory maneuvers (quiet breathing, tidal breathing with diaphragm alone, diaphragmatic isovolume maneuvers)

Outcome

Parasternal electromyographic (EMG) activity measured using concentric needle electrodessurrogate

Parasternal EMG activity during quiet inspiration in normal subjects is driven by a central involuntary mechanism rather than a reflexive one.

Troyer et al. (1982) studied this question.

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Central drive, not reflexes, governs parasternal activity in quiet breathing; leaves open extension to disease states or clinical monitoring.