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A Journal on Internal Medicine and Pharmacology

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Gazzetta Medica Italiana Archivio per le Scienze Mediche 2012 August;171(4):437-46

language: English

Contributions of respiration rate and volume to changes in postural control following a 5k-run

Harper E. N. 1, Strang A. J. 2, Walsh M. S. 1, Caserta B. 1, Haworth J. 3, Hieronymus M. 4

1 Department of Kinesiology and Health, Miami University, Oxford, OH, USA;
2 Consortium Research Fellows Program, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA;
3 Nebraska Biomechanics Core Facility, University of Nebraska-Omaha, Omaha, NE, USA;
4 Department of Health and Human Performance, University of Houston, Houston, TX, USA


Aim. The purpose of this study was to examine the effects of elevated respiratory dynamics on changes to postural control following a 5-kilometer run.
Methods. Center of Pressure (COP), respiration rate (b/min), and respiration volume (l/min) were recorded at baseline and immediately following a 5k-run (at 0, 2, 5, and 10 minutes post-run) for eighteen participants. In a follow-up session, participants were asked to replicate the respiratory dynamics they exhibited following the run, while additional COP recordings were taken. COP time-series were analyzed using scale-dependent [95% elliptical area (EA), sway path (SP)], and scale-independent [normalized sway path (SPn) and sample entropy (SEn)] postural control measures.
Results. Results showed a number of changes to postural control following 5k-run (increased SP, decreased SPn, and decreased SEn relative to baseline), all interpreted to indicate diminished postural control that lasted from 2 to 5-min post-run. However, only minimal changes in postural control were observed in the follow-up session when respiratory dynamics were replicated (without the presence of exercise).
Conclusion. Together, these findings indicate that elevated respiratory dynamics typically present following exercise likely contribute little to changes observed in postural control observed following exercise.

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