Energy consumption of paraplegic locomotion using reciprocating gait orthosis
| Autor: | Pierre Rochcongar, Philippe Thoumie, A. Courtillon, G. Le Claire, E. Tanguy, B. Perruoin-Verbe, Jocelyne Beillot, J. Dassonville, A. Cormerais, François Carré, G. Nadeau |
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| Rok vydání: | 1996 |
| Předmět: |
Adult
Orthotic Devices medicine.medical_specialty Physiology Oxygen Consumption Physical medicine and rehabilitation Heart Rate Physiology (medical) Heart rate Humans Medicine Functional electrical stimulation Orthopedics and Sports Medicine Lactic Acid Reciprocating gait orthosis Gait Paraplegia business.industry Public Health Environmental and Occupational Health VO2 max General Medicine Electric Stimulation Orthotic device Preferred walking speed Physical therapy Energy Metabolism Cadence business human activities Locomotion |
| Zdroj: | European Journal of Applied Physiology and Occupational Physiology. 73:376-381 |
| ISSN: | 1439-6327 0301-5548 |
| Popis: | The energy cost of walking using a reciprocating gait orthosis (RGOII) with functional electrical stimulation (FES) was assessed in 14 patients with spastic complete paraplegia from six rehabilitation centres. Before and after training asing RGOII with FES, the subjects performed a progressive maximal test on an arm-crank ergometer to obtain their laboratory peak oxygen uptake (LVO2peak), heart rate (HR) and blood lactate concentration changes. At the end of the training session, oxygen uptake (VO2) was measured during a walking test with orthosis at different speeds (6 min steady state at 0.1 m.s-1, followed by 2-min stages at progressively increasing speeds up to exhaustion). Of the subjects 4 repeated this test using orthosis without FES. At a speed of 0.1 m.s-1, VO2 represented 47 (SD 23)% of LVO2peak, mean HR was 137 (SD 21) beats.min-1 and mean blood lactate concentration 2.4. (SD 1.4) mmol.l-1. Maximal speed ranged from 0.23 to 0.5 m.s-1. At maximal speed, VO2 was 91 (SD 18)% of LVO2peak, mean HR reached 96 (SD 7)% and mean blood lactate concentration only 52 (SD 19)% of the maximal values measured during the laboratory test. Walking without electrical stimulation induced an increase in HR but there was no difference in VO2 and blood lactate compared to walking with stimulation. The training period did not result in any improvement in maximal physiological data. We concluded that the free cadence walking speed with orthosis remains much lower than that of able-bodied people or wheelchair users. The metabolic cost at a given speed is much higher even if, using a stimulation device, the cardiovascular stress is reduced. |
| Databáze: | OpenAIRE |
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