Orthostatic influence on heart rate and blood pressure variability in trained persons with tetraplegia

Otsuka, Yasuko; Shima, Norihiro; Moritani, Toshio; Okuda, Kuniharu; Yabe, Kyonosuke

doi:10.1007/s00421-008-0783-x

Cited by 10 publications

(12 citation statements)

References 9 publications

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“…tetraplegic men and controls. Moreover, no significant differences could be appreciated in the frequency domain parameters of HRV in supine position between the two groups in the present research work, which is in agreement with the previous studies of Otsuka et al20 and Koh et al21 . Otsuka et al 20 found no differences in the R-R interval power spectra among trained complete tetraplegic men, untrained complete tetraplegic men and that of the controls.…”

supporting

confidence: 94%

“…Claydon and Krassioukov 5 observed that the R-R interval decreased significantly in SCI patients and controls in upright position. An higher heart rate in both trained and untrained persons with tetraplegia on change of position from supine to 60 degree was observed by Otsuka et al 20 . The observation in the present study, is similar to the above studies.…”

Section: Discussionmentioning

confidence: 69%

“…They demonstrated significantly low total body noradrenaline spillover with similar baroreceptor reflex sensitivity and haemodynamic profile compared to that observed in able-bodied controls at rest. Otsuka et al 20 #T3, T10 T5 + 20 10 27 #T6 T5 -16 11 25 #T2-T4 T5 + 12 12 26 #D/L T6-T7 T6 + 12 It is known that some of the autonomic disturbances are transient, whereas, others continue to persist for life 23 .…”

Section: Discussionmentioning

confidence: 99%

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Assessment of Autonomic Dysfunction in Chronic Complete Spinal Cord Injury by Heart Rate Variability

Navin¹,

Dube²

2015

Indian Journal of Physical Medicine and Rehabilitation

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Objectives: Non-invasive assessment of cardiac autonomic dysfunction in spinal cord injury (SCI) by means of heart rate variability analysis (HRV). Also, to assess the effect of postural change on neural outflow. Setting: Rehabilitation research center, Sawai Man Singh Hospital, Jaipur. Participants: 110 patients with SCI were screened, of whom, 12 patients aged between 20 and 30 years with chronic complete SCI and neurological level of T6 or above were included. An equal number of age and sex matched healthy individuals were the controls. Interventions: Five minute ECG recording, first in supine position and then in sitting position was done. Outcome measures: Frequency domain measures of heart rate variability. Results: No significant differences were observed between both the groups in supine rest. On sitting, the absolute power of the low frequency (LF) and high frequency (HF) components were significantly less in the SCI patients than that in the controls. A significantly increased LF-to-HF ratio along with a higher mean heart rate (HR) was observed in the controls on postural change. Conclusion: On change of posture, the controls showed a physiologically patterned response, which was not observed in the SCI patients. The loss of this homeostatic mechanism in the SCI subjects was observed, which may reflect a dysfunctional autonomic nervous system interplay in patients with complete SCI.

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supporting

confidence: 94%

Section: Discussionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

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Assessment of Autonomic Dysfunction in Chronic Complete Spinal Cord Injury by Heart Rate Variability

Navin¹,

Dube²

2015

Indian Journal of Physical Medicine and Rehabilitation

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“…На когорте здоровых людей было доказано, что более высокий уровень физической подготовки связан с улучшением вегетативного контроля сердечно-сосудистой системы, а гиподинамия связана со снижением вегетативного тонуса сердечно-сосудистой системы [45]. У спортсменов с ТСМ на фоне регулярного выполнения физических упражнений были также отмечены улучшения функции кардиоваскулярной системы [18,46,47]. Однако известно, что если физические упражнения проводятся без соблюдения должного контроля интенсивно- [18].…”

Section: особенности развития автономной дисрефлексии у людей занимаunclassified

Disturbances of Cardiovascular System in Persons With Chronic Spinal Cord Injury During Exercise and Participation in Paralympic Sports

et al. 2018

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Spinal cord injury (SCI) is a devastating condition that affects mostly young and active individuals but also impacts their family members and results in significant challenges for medical care and social integration. In addition to obvious motor impairment (tetraplegia/paraplegia), these individuals also suffer from a variety of less obvious but devastating autonomic nervous system dysfunctions that negatively impact their health and affect various aspects of daily living. Physical training and sports are essential components of rehabilitation and leaser activities for people with disabilities. Number of individuals with SCI who run an active lifestyle is increasing. Physical activity puts an additional stress on various organs and body systems. The presented manuscript describes in detail cardiovascular dysfunctions in physically active individuals with a SCI, including those engaged in Paralympic sports: low resting blood pressure, orthostatic hypotension, arrhythmias, and the phenomenon of «autonomic dysreflexia». We also address issues related to self-induced episodes of autonomic dysreflexia in order to improve athletic performance ― a phenomenon known as «boosting». Boosting may improve sports performance in short term but is associated with the risk of serious cardiovascular disorders and even sudden death. This practice is considered as anti-doping rule violation by the International Paralympic Committee and thus prohibited. Understanding of the changes occurring in the body of a physically active individual after SCI is necessary for general practitioners, neurologists, rehabilitation specialists, sports medicine physicians, as well as for specialists of adapted physical education and sports.

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“…Athletes with SCI have also demonstrated some ability to improve cardiovascular modulation through exercise [1718], although not to the extent of athletes with intact ANS [1920]. …”

Section: Introductionmentioning

confidence: 99%

Hemodynamic Adaptations to Regular Exercise in People With Spinal Cord Injury

Lee

Kim

et al. 2017

Ann Rehabil Med

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ObjectiveTo investigate the real-time cardiovascular response to the progressive overload exercise in different levels of spinal cord injury (SCI), and to find out whether regular exercise has effect on these cardiovascular responses.MethodsThe study enrolled 8 able-bodied individuals in the control group plus 15 SCI subjects who were divided into two groups by their neurological level of injury: high-level SCI group (T6 or above) and low-level SCI group (T7 or below). Also, subjects were divided into exercise group and non-exercise group by usual exercise habits. We instructed the subjects to perform exercises using arm ergometer according to the protocol and checked plethysmograph for the real time assessment of blood pressure, heart rate, and cardiac output.ResultsSix subjects were included in high-level SCI group (3 cervical, 3 thoracic injuries), 9 subjects in low-level SCI group (9 thoracic injuries), and 8 able-bodied individuals in control group. During arm ergometer-graded exercise, mean arterial pressure (MAP) was significantly lower in high-level SCI subjects of non-exercise group, compared with high-level SCI subjects of exercise group. In addition, HR was significantly higher in low-level SCI group compared with control group.ConclusionThere are significant differences in mean arterial pressure of high-level SCI group according to usual exercise habits. We discovered that even in non-athlete high-level SCI, regular exercise can bring cardiac modulation through blood pressure control.

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Orthostatic influence on heart rate and blood pressure variability in trained persons with tetraplegia

Cited by 10 publications

References 9 publications

Assessment of Autonomic Dysfunction in Chronic Complete Spinal Cord Injury by Heart Rate Variability

Assessment of Autonomic Dysfunction in Chronic Complete Spinal Cord Injury by Heart Rate Variability

Disturbances of Cardiovascular System in Persons With Chronic Spinal Cord Injury During Exercise and Participation in Paralympic Sports

Hemodynamic Adaptations to Regular Exercise in People With Spinal Cord Injury

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