Key result
Apnoea increased the coherence of sympathetic drives between the two legs from 82.1% at rest to 91.9%, whereas voluntary contractions decreased coherence by >10%.
Absolute Event Rate: 91.9% vs 82.1%
Homologous muscles of the lower limbs are subject to a common sympathetic drive at rest and during apnoea, but this common drive is lessened during voluntary activity due to regionally specific changes.
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Apnoea enhances bilateral leg sympathetic coherence; hypothesis-generating for autonomic regulation in cardiovascular conditions and requires clinical validation.
Wallin et al. (1992) studied Human subjects. Apnoea and voluntary contractions vs. Rest was evaluated on Coherence between sympathetic recordings from right and left legs. Apnoea increased the coherence of sympathetic drives between the two legs from 82.1% at rest to 91.9%, whereas voluntary contractions decreased coherence by >10%.
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