Physiological responses in males with and without spinal cord injury to recumbent synchronous versus seated asynchronous arm crank stress tests (Respuestas fisiológicas en hombres con y sin lesión medular al realizar pruebas de esfuerzo con ergómetros de

Retos ◽  
2020 ◽  
pp. 565-571
Author(s):  
Guillermo R. Oviedo ◽  
Juan Mariano Alamo ◽  
Oscar A. Niño-Mendez ◽  
Noémie Travier ◽  
Jose L. Ventura ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Physiological Responses ◽  
Clinical Settings ◽  
Stress Tests ◽  
Exercise Tests ◽  
Linear Relationships ◽  
Cord Injury ◽  
Specific Prediction ◽  
Arm Crank Ergometer

Abstract. Introduction: Maximal oxygen uptake (VO2) may be one of the most important variables in the study of the responses of people with spinal cord injury (SCI) and without SCI to physical exercise. The results achieved during its assessment serve as a diagnostic and health indicator in clinical settings. Objective: this study aimed to investigate the physiological responses in males with and without SCI performing a maximal incremental test on an asynchronous arm crank ergometer (ACr) and on a recumbent synchronous handbike ergometer (HB). Methods: ten males with SCI and 11 able-bodied males (AB group) participated in this study. Two maximal graded exercise tests were performed, starting at 10 watts and increasing the workload by 10 watts every minute until exhaustion. Results: the AB group achieved lower workloads and absolute VO2 values than the SCI group during the HB test (all p < 0.05). The submaximal values of the relative VO2 peak and RER at workloads between 40-90 watts showed significant differences between SCI and AB on HB and ACr. Significant linear relationships between workload and relative VO2 peak were found during the HB test (p < 0.001). Conclusions: these findings demonstrate that there are different physiological responses between adults with and without SCI when performing maximal and submaximal arm-ergometry. Interestingly, higher VO2 peak and workloads were achieved by the SCI group. In addition, specific prediction equations derived from the current study can be used to calculate the relative VO2 peak in handbikers with and without SCI.  Resumen. Introducción: el consumo de oxígeno (VO2) es una de las variables más importantes en el estudio de la respuesta al ejercicio en personas con y sin lesión medular (SCI; AB). Objetivo: en este estudio se analizaron las respuestas fisiológicas en hombres adultos con y sin SCI al realizar pruebas de esfuerzo máximas en un ergómetro de brazos asincrónico (ACr) en sedestación y en un ergómetro de brazos sincrónico (HB) en posición supina. Métodos: diez hombres con SCI y 11 sin SCI participaron en este estudio. Dos pruebas de esfuerzo gradual fueron realizadas por cada participante, iniciando a 10 watts e incrementando la carga 10 watts cada minuto. Resultados: el grupo sin SCI alcanzó cargas y VO2 menores que los participantes con SCI durante el test en HB (p < 0.05). Los valores submáximos para el VO2 relativo y el RER a cargas de 40-90 watts fueron estadísticamente diferentes entre los grupos en ambos tests. Se observó una correlación lineal entre las cargas de trabajo y el VO2 relativo durante el test en HB (p < 0.001). Conclusiones: los resultados obtenidos en este estudio demuestran que existen respuestas fisiológicas diferentes entre personas con y sin SCI cuando realizan pruebas de esfuerzo con cargas máximas y submáximas. Llamativamente, el grupo SCI alcanzó mayores cargas de trabajo y VO2 que los no SCI. Finalmente, se presentan dos ecuaciones específicas para obtener el VO2 de manera indirecta en personas con y sin SCI mediante el uso de un HB.

scholarly journals Neuroprotective Role of Hypothermia in Acute Spinal Cord Injury

Biomedicines ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 104
Author(s):  
Hasan Al-Nashash ◽  
Angelo H. ALL
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Time Window ◽  
Clinical Settings ◽  
Neuroprotective Effects ◽  
Beneficial Effects ◽  
Cord Injury ◽  
Neuroprotective Strategy ◽  
History Of ◽  
Local Hypothermia

Even nowadays, the question of whether hypothermia can genuinely be considered therapeutic care for patients with traumatic spinal cord injury (SCI) remains unanswered. Although the mechanisms of hypothermia action are yet to be fully explored, early hypothermia for patients suffering from acute SCI has already been implemented in clinical settings. This article discusses measures for inducing various forms of hypothermia and summarizes several hypotheses describing the likelihood of hypothermia mechanisms of action. We present our objective neuro-electrophysiological results and demonstrate that early hypothermia manifests neuroprotective effects mainly during the first- and second-month post-SCI, depending on the severity of the injury, time of intervening, duration, degree, and modality of inducing hypothermia. Nevertheless, eventually, its beneficial effects gradually but consistently diminish. In addition, we report potential complications and side effects for the administration of general hypothermia with a unique referment to the local hypothermia. We also provide evidence that instead of considering early hypothermia post-SCI a therapeutic approach, it is more a neuroprotective strategy in acute and sub-acute phases of SCI that mostly delay, but not entirely avoid, the natural history of the pathophysiological events. Indeed, the most crucial rationale for inducing early hypothermia is to halt these devastating inflammatory and apoptotic events as early and as much as possible. This, in turn, creates a larger time-window of opportunity for physicians to formulate and administer a well-designed personalized treatment for patients suffering from acute traumatic SCI.

Arm crank ergometer “spin” training improves seated balance and aerobic capacity in people with spinal cord injury

2019 ◽  
Vol 30 (2) ◽  
pp. 361-369 ◽  
Author(s):  
Alison M. M. Williams ◽  
Amanda E. Chisholm ◽  
Andrea Lynn ◽  
Raza N. Malik ◽  
Gevorg Eginyan ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Aerobic Capacity ◽  
Cord Injury ◽  
Seated Balance ◽  
Arm Crank Ergometer

Relationships between physiological responses and presyncope symptoms during tilting up in patients with spinal cord injury

2008 ◽  
Vol 46 (7) ◽  
pp. 681-688 ◽  
Author(s):  
David S. Liu ◽  
Walter H. Chang ◽  
Alice M. K. Wong ◽  
Shih-Ching Chen ◽  
Kang-Ping Lin ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Physiological Responses ◽  
Cord Injury ◽  
Presyncope Symptoms

scholarly journals Assessment of Hyperactive Reflexes in Patients with Spinal Cord Injury

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Dali Xu ◽  
Xin Guo ◽  
Chung-Yong Yang ◽  
Li-Qun Zhang
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Patellar Tendon ◽  
Knee Extension ◽  
Clinical Settings ◽  
Tendon Reflex ◽  
Cord Injury ◽  
Reflex Gain ◽  
Healthy Control ◽  
Tendon Reflexes

Hyperactive reflexes are commonly observed in patients with spinal cord injury (SCI) but there is a lack of convenient and quantitative characterizations. Patellar tendon reflexes were examined in nine SCI patients and ten healthy control subjects by tapping the tendon using a hand-held instrumented hammer at various knee flexion angles, and the tapping force, quadriceps EMG, and knee extension torque were measured to characterize patellar tendon reflexes quantitatively in terms of the tendon reflex gain (Gtr), contraction rate (Rc), and reflex loop time delay (td). It was found that there are significant increases inGtrandRcand decrease intdin patients with spinal cord injury as compared to the controls (P<0.05). This study presented a convenient and quantitative method to evaluate reflex excitability and muscle contraction dynamics. With proper simplifications, it can potentially be used for quantitative diagnosis and outcome evaluations of hyperreflexia in clinical settings.

scholarly journals Physiological responses between players with and without spinal cord injury in wheelchair basketball small-sided games

Spinal Cord ◽  
2016 ◽  
Vol 54 (12) ◽  
pp. 1152-1157 ◽  
Author(s):  
A Iturricastillo ◽  
J Yanci ◽  
A Los Arcos ◽  
C Granados
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Physiological Responses ◽  
Wheelchair Basketball ◽  
Cord Injury

Does 20-min arm crank ergometer exercise increase plasma interleukin-6 in individuals with cervical spinal cord injury?

2011 ◽  
Vol 112 (2) ◽  
pp. 597-604 ◽  
Author(s):  
Ken Kouda ◽  
Kazunari Furusawa ◽  
Hiroyuki Sugiyama ◽  
Tadashi Sumiya ◽  
Tomoyuki Ito ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Interleukin 6 ◽  
Cervical Spinal Cord ◽  
Cervical Spinal Cord Injury ◽  
Cord Injury ◽  
Ergometer Exercise ◽  
Arm Crank Ergometer
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