NDLI: Blood distribution adaptations in paraplegics during posture changes: peripheral and central reflex responses

Content Provider	Springer Nature Link
Author	Theisen, Daniel Vanlandewijck, Yves Sturbois, Xavier Francaux, Marc
Copyright Year	2000
Abstract	The veno-arteriolar reflex (VAR) in spinal-cord-injured subjects (SCI) has been attributed little interest, although it might contribute substantially to their blood redistribution. This peripheral reflex response, which is based on an axon reflex, consists of a reduction in limb blood flow following an increase in venal transmural pressure. The purpose of the present investigation was to assess the peripheral and central cardiovascular adaptations of paraplegics with high (HP) and low (LP) spinal lesions to subsequent, passive posture changes involving leg dependency and upright sitting, and to compare them to able-bodied (AB) subjects. Lower-limb cutaneous vascular conductance (CVC) was evaluated from skin blood flow measurements (laser Doppler flowmetry) taken from the dorsal foot, and from ankle blood pressure. Cardiac stroke volume, heart rate and myocardial performance were assessed using impedance cardiography and brachial blood pressure. During leg dependency, a significant vasoconstriction was noted in all three groups. The initial decrease in CVC was higher in HP (−76.82%) than in AB (−45.82%), the values for LP (−67.08%) lying in between these two (significant group × time interaction: F = 2.832; P = 0.042). There were no differences for parameters of central hemodynamics. No between-group differences were noted in any parameter tested during upright sitting. CVC remained at a similar low level as compared to leg dependency, stroke volume decreased, heart rate and blood pressure increased, and myocardial performance remained constant. The present results suggest that paraplegics have a peripheral VAR in their paralyzed lower limbs, and that this contributes to their cardiovascular stability.
Starting Page	463
Ending Page	469
Page Count	7
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	81
Issue Number	6
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-03-13
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Air plethysmography: an alternative method for assessing peripheral circulatory adaptations during spaceflights

Errors of fact and logic impair discrimination of ‘central’ and ‘peripheral’ adaptations to training

Tendon vibration during submaximal isometric strength and postural tasks

Solving the Fick principle using whole body measurements does not discriminate “central” and “peripheral” adaptations to training

Influence of nonthermal baroreceptor modulation of heat loss responses during uncompensable heat stress

Solving the Fick principle using whole body measurements can be used to discriminate ‘‘central’’ and ‘‘peripheral’’ adaptations to training

Neural adaptations to submaximal isokinetic eccentric strength training

Ventilatory and circulatory responses at the onset of exercise after eccentric exercise

Cardiovascular responses at the onset of passive leg cycle exercise in paraplegics with spinal cord injury

Blood distribution adaptations in paraplegics during posture changes: peripheral and central reflex responses

Similar Documents

Air plethysmography: an alternative method for assessing peripheral circulatory adaptations during spaceflights

Errors of fact and logic impair discrimination of ‘central’ and ‘peripheral’ adaptations to training

Tendon vibration during submaximal isometric strength and postural tasks

Solving the Fick principle using whole body measurements does not discriminate “central” and “peripheral” adaptations to training

Influence of nonthermal baroreceptor modulation of heat loss responses during uncompensable heat stress

Solving the Fick principle using whole body measurements can be used to discriminate ‘‘central’’ and ‘‘peripheral’’ adaptations to training

Neural adaptations to submaximal isokinetic eccentric strength training

Ventilatory and circulatory responses at the onset of exercise after eccentric exercise

Cardiovascular responses at the onset of passive leg cycle exercise in paraplegics with spinal cord injury

Blood distribution adaptations in paraplegics during posture changes: peripheral and central reflex responses