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Parasympathetic baroreflexes and heart rate variability during acute stage of sport concussion recovery.
Bishop, Scott; Dech, Ryan; Baker, Taylor; Butz, Matthew; Aravinthan, Kaishan; Neary, J Patrick.
Afiliación
  • Bishop S; a Faculty of Kinesiology and Health Studies , University of Regina , Regina , Saskatchewan , Canada.
  • Dech R; a Faculty of Kinesiology and Health Studies , University of Regina , Regina , Saskatchewan , Canada.
  • Baker T; a Faculty of Kinesiology and Health Studies , University of Regina , Regina , Saskatchewan , Canada.
  • Butz M; b College of Medicine , University of Saskatchewan , Saskatoon , Saskatchewan , Canada.
  • Aravinthan K; a Faculty of Kinesiology and Health Studies , University of Regina , Regina , Saskatchewan , Canada.
  • Neary JP; a Faculty of Kinesiology and Health Studies , University of Regina , Regina , Saskatchewan , Canada.
Brain Inj ; 31(2): 247-259, 2017.
Article en En | MEDLINE | ID: mdl-28045562
PRIMARY OBJECTIVE: To assess and compare the parasympathetic state of individuals in healthy vs concussion groups, by measuring cardiovascular metrics under resting and baroreflex conditions using a squat-stand manoeuvre. RESEARCH DESIGN: This was a retrospective mixed-method study, with participants who sustained a medically diagnosed sport concussion (n = 12), being tested within 72-hours post-injury. METHODS AND PROCEDURES: Participant's heart rate (Electrocardiogram, ECG) and blood pressure (finger plethysmography) data was collected during rest and during 10-second squat-stands (10SS, 0.05 Hz). Blood pressure and heart rate standard deviation data was analysed in the 0-5 seconds and 6-10 seconds periods of squatting and standing. Resting and baroreflex ECG data were analysed via Fourier Transformations for %Low Frequency and %High Frequency (%LF and %HF). RESULTS: The control group alleviated more pressure and had a significantly higher standard deviation of heart rate during the 6-10 seconds of squatting (p < 0.05). Overall heart rate standard deviation in the concussion group was significantly lower than healthy controls when standing (p < 0.05). There were no differences in %LF and % HF between groups or between rest and 10SS. CONCLUSION: This study provides preliminary evidence that autonomic function is dysregulated following mTBI within the initial 72 hours of injury.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sistema Nervioso Parasimpático / Traumatismos en Atletas / Conmoción Encefálica / Barorreflejo / Frecuencia Cardíaca Tipo de estudio: Observational_studies Límite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: Brain Inj Asunto de la revista: CEREBRO Año: 2017 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sistema Nervioso Parasimpático / Traumatismos en Atletas / Conmoción Encefálica / Barorreflejo / Frecuencia Cardíaca Tipo de estudio: Observational_studies Límite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: Brain Inj Asunto de la revista: CEREBRO Año: 2017 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido