Key result
A 65 km ultramarathon increased heart rate and electrodermal activity, decreased skin temperature, and increased correlations across ANS modalities.
Why the study?
Running an ultramarathon serves as an intense stressor inducing changes in the autonomic nervous system, prompting an evaluation of changes within and across autonomic nervous system modalities.
Does a 65 km ultramarathon induce changes in autonomic nervous system modalities in runners?
Observational (n=13)
Does a 65 km ultramarathon induce changes in autonomic nervous system modalities in runners?
An ultramarathon induces significant changes in autonomic nervous system modalities, increasing correlations across modalities which may point towards a reorganization of central ANS control.
Answers are grounded in this paper and cite their sources.
Ultramarathon-associated ANS shifts support central reorganization; hypothesis-generating and should not yet change practice.
Purpose: Running an ultramarathon can be considered as a multifaceted, intense stressor inducing changes within the autonomic nervous system (ANS). The aim of this study was to examine changes within and across ANS modalities in response to an ultramarathon.Methods: Thirteen runners (44.3 ± 5.9 years) completed a 65 km run. Electrodermal activity (EDA), heart rate (HR), and skin temperature measured at wrist (Temp), were recorded before and after running. Three-minute intervals were analysed. Mean values were compared by t-tests for dependent samples. Joint principal component analysis-canonical correlation analysis (PCA-CCA) and multiset CCA techniques were employed to measure the interactions between either any two or among all modalities.Results: HR (p < 0.01) and EDA (p < 0.01) increased, while Temp decreased (p < 0.01). PCA-CCA revealed one significant component (p < 0.05) for each modality pair in pre and post measures. Component strength increased from pre (mean = 0.73) to post (mean = 0.92) test. Multiset CCA supported the assumption of increasing strength of correlations across modalities.Conclusion: Ultramarathon, an intense physical stressor, increases correlations across modalities pointing towards a reorganization of central ANS control to restore dynamic balance after physical load. This characterization of ANS-states might offer new avenues for training control.
No takes yet. Share an insight, caveat, or question.
Vieluf et al. (2019) conducted an observational in Healthy runners (n=13). Ultramarathon (65 km run) vs. Pre-run baseline was evaluated on Changes in electrodermal activity, heart rate, and skin temperature (p=<0.01). A 65 km ultramarathon increased heart rate and electrodermal activity, decreased skin temperature, and increased correlations across ANS modalities.
Synapse has enriched 10 related papers. Consider them for comparative context: