Journal article

Sympatho-vagal interaction in the recovery phase of exercise

Tulppo M, Kiviniemi A, Hautala A, Kallio M, Seppänen T, Tiinanen S, Mäkikallio T, Huikuri H ...see all

Clinical Physiology and Functional Imaging, vol. 31, issue 4 (2011) pp. 272-281

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Abstract

Reciprocal autonomic regulation occurs during incremental exercise. We hypothesized that sympatho-vagal interplay may become altered after exercise because of the differences in recovery patterns of autonomic arms. The cardiac vagal activity was assessed by measurement of beat-to-beat R-R interval oscillations using a Poincare plot method (SD1), and muscle sympathetic nervous activity (MSNA) was measured from peroneus nerve by a microneurography technique during and after exercise in 16 healthy subjects. Autonomic regulation was compared between the rest and after exercise (3.5 +/- 1.0 min after exercise) at equal heart rates (HR). SD1 was at the equal level at the recovery phase (40 +/- 21 ms) compared to the resting condition (38 +/- 16 ms, P = ns) at comparable HR (57 +/- 10 for both). MSNA was higher at the recovery phase (40 +/- 19 burst per 100 heartbeats) than at rest (25 +/- 13 burst per 100 heartbeats, P

Author-supplied keywords

  • Heart rate
  • Sympathetic activity
  • Vagal activity

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