scholarly journals Cardiorespiratory Responses to 10 Weeks of Exoskeleton-Assisted Overground Walking Training inChronic Nonambulatory Patients with Spinal Cord Injury

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5022
Author(s):  
Jae Hyeon Park ◽  
Hyeon Seong Kim ◽  
Seong Ho Jang ◽  
Dong Jin Hyun ◽  
Sang In Park ◽  
...  

Exercise intensity of exoskeleton-assisted walking in patients with spinal cord injury (SCI) has been reported as moderate. However, the cardiorespiratory responses to long-term exoskeleton-assisted walking have not been sufficiently investigated. We investigated the cardiorespiratory responses to 10 weeks of exoskeleton-assisted walking training in patients with SCI. Chronic nonambulatory patients with SCI were recruited from an outpatient clinic. Walking training with an exoskeleton was conducted three times per week for 10 weeks. Oxygen consumption and heart rate (HR) were measured during a 6-min walking test at pre-, mid-, and post-training. Exercise intensity was determined according to the metabolic equivalent of tasks (METs) for SCI and HR relative to the HR reserve (%HRR). Walking efficiency was calculated as oxygen consumption divided by walking speed. The exercise intensity according to the METs (both peak and average) corresponded to moderate physical activity and did not change after training. The %HRR demonstrated a moderate (peak %HRR) and light (average %HRR) exercise intensity level, and the average %HRR significantly decreased at post-training compared with mid-training (31.6 ± 8.9% to 24.3 ± 7.3%, p = 0.013). Walking efficiency progressively improved after training. Walking with an exoskeleton for 10 weeks may affect the cardiorespiratory system in chronic patients with SCI.

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Masae Miyatani ◽  
Kei Masani ◽  
Noritaka Kawashima ◽  
B. Cathy Craven ◽  
T. Adam Thrasher ◽  
...  

Purpose. To determine the feasibility of increasing the cardiopulmonary exercise intensity during walking with gait-patterned functional electrical stimulation (GP-FES) among individuals with motor incomplete SCI. Methods. Two men with motor-incomplete SCI (Subjects A and B, age 45 and 50 years; Level of Injury: C4 and T10; AIS score: D and D, resp.) performed a three sequential four-minute continuous walking sessions [(1) regular gait (non-GP-FES-1); (2) gait with GP-FES (GP-FES); (3) regular gait (non-GP-FES-2)]. Oxygen consumption (Vo2) was measured continuously during trials. Results. Vo2 was higher during GP-FES (Subjects A and B; 14.5 and 19.1 mL/kg/min, resp.) as compared to regular gait (Non-GP-FES-1: Subjects A and B; 13.4 and 17.0: mL/kg/min, resp.; non-GP-FES-2: Subjects A and B; 13.1 and 17.5: mL/kg/min, resp.). Conclusion. The exercise intensity of GP-FES walking was higher than that of regular walking among individuals with motor incomplete SCI. Further investigations are required to determine the clinical relevance of the exercise.


Spinal Cord ◽  
2000 ◽  
Vol 38 (6) ◽  
pp. 340-345 ◽  
Author(s):  
TJ Barstow ◽  
AME Scremin ◽  
DL Mutton ◽  
CF Kunkel ◽  
TG Cagle ◽  
...  

2013 ◽  
Vol 37 (6) ◽  
pp. 758-764 ◽  
Author(s):  
Arjan J. T. Bakkum ◽  
Sonja de Groot ◽  
Mark Q. Onderwater ◽  
Jelle de Jong ◽  
Thomas W. J. Janssen

Spinal Cord ◽  
2014 ◽  
Vol 52 (6) ◽  
pp. 455-461 ◽  
Author(s):  
S de Groot ◽  
K Postma ◽  
L van Vliet ◽  
R Timmermans ◽  
L J M Valent

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1498
Author(s):  
Adrià Marco-Ahulló ◽  
Lluïsa Montesinos-Magraner ◽  
Luis-Millán Gonzalez ◽  
Roberto Llorens ◽  
Xurxo Segura-Navarro ◽  
...  

This study aimed to investigate the validity of using built-in smartphone accelerometers to estimate the active energy expenditures of full-time manual wheelchair users with spinal cord injury (SCI). Twenty participants with complete SCI completed 10 5-min daily activities that involved the upper limbs, during which their oxygen consumption and upper limb activity were registered using a portable gas analyzer and a smartphone (placed on the non-dominant arm), respectively. Time series of 1-min averaged oxygen consumption and 55 accelerometer variables (13 variables for each of the four axes and three additional variables for the correlations between axes) were used to estimate three multiple linear models, using a 10-fold cross-validation method. The results showed that models that included either all variables and models or that only included the linear variables showed comparable performance, with a correlation of 0.72. Slightly worse general performance was demonstrated by the model that only included non-linear variables, although it proved to be more accurate at estimating the energy expenditures (EE) during specific tasks. These results suggest that smartphones could be a promising low-cost alternative to laboratory-grade accelerometers to estimate the energy expenditure of wheelchair users with spinal cord injury during daily activities.


2014 ◽  
Vol 28 (S1) ◽  
Author(s):  
Daniela Terson de Paleville ◽  
Douglas Lorenz ◽  
John McCulloch ◽  
Sevda Aslan ◽  
Michael Kloby ◽  
...  

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