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Hypercapnic hypoxia improves cognitive and motor functions of children with cerebral palsy
Vladimir Kulikov1,2, Pavel Tregub1,3, Dmitry Parshin4
1Altai Medical Institute of Postgraduate Education, LLC, Barnaul, Russia.
Insights
Respiratory training with hypercapnic hypoxia improved nervous system function in children with spastic cerebral palsy. This method enhances standard therapy for cerebral palsy by positively impacting neurological and neurophysiological outcomes.
Area of Science:
- Neurology
- Pediatrics
- Respiratory Medicine
Background:
- Cerebral palsy (CP) is a group of movement disorders due to brain damage.
- Spastic CP is the most common form, affecting motor function.
- Current therapies aim to improve motor skills and quality of life.
Purpose of the Study:
- To evaluate the efficacy of respiratory exercises with hypercapnic hypoxia in children with spastic cerebral palsy.
- To assess the impact of this training on neurological and neurophysiological parameters.
- To determine if this method can enhance standard CP therapy.
Main Methods:
- A randomized, triple-blind, placebo-controlled trial was conducted with 42 children (3-7 years) diagnosed with spastic cerebral palsy.
- The treatment group (n=22) underwent daily 20-minute respiratory exercises using a Carbonic training apparatus for 14-16 sessions.
- Neurological and neurophysiological assessments, including EEG, pyramidal tract magnetic stimulation, and P300 cognitive potentials, were performed before and after the intervention.
Main Results:
- Evoked potentials showed a significant decrease in P3 component latency in the treatment group (302 ms) compared to placebo (305 ms; p<0.05).
- Magnetic stimulation revealed reduced central motor conduction time (2.2-2.5 ms; p<0.05) and motor cortex excitation threshold (12-16%; p<0.01) in the treatment group.
- The treatment group demonstrated a significant shift towards favorable homeostatic adjustment to hypercapnic hypoxia (33% to 57%; p<0.05), unlike the placebo group.
Conclusions:
- Respiratory training utilizing hypercapnic hypoxia positively impacts the functional state of the nervous system in children with spastic cerebral palsy.
- This training method shows potential as an adjunct therapy to improve outcomes in pediatric CP.
- The findings suggest hypercapnic hypoxia training can enhance neurophysiological markers associated with motor control and cognitive processing.
Abstract:
A randomized, triple-blind, placebo-controlled trial involving 42 patients between 3 and 7 years of age with spastic cerebral palsy was performed. For the treatment test group (n=22), daily respiratory exercises with hypercapnic hypoxia were performed using a Carbonic training apparatus for 20 minutes per day; a total of 14 to 16 sessions were performed. Before the start of the study and the day after training was completed, the patients underwent neurological and neurophysiological examinations (electroencephalography, magnetic stimulation of the pyramidal tract, and cognitive potentials Р300).The evoked potentials showed a decrease in the peak latency of the P3 component of the test group after treatment (302 ms) that was more pronounced than that of the placebo group (305 ms; p<0.05). Magnetic stimulation showed that hypercapnic hypoxic training resulted in reductions in central motor conduction time by 2.2 to 2.5 ms (p<0.05) and in the excitation threshold of the motor cortex by 12% to 16% (р<0.01) depending on the lateralization; The strategy of adjusting to hypercapnic hypoxia, either unfavorable (hyperventilation and avoidance) or favorable (homeostatic with the achievement of preset values for hypercapnia and hypoxia), did not change during the process of training in the placebo group; however, it shifted considerably toward favorable (from 33% to 57%; р<0.05) in the test group.Respiratory training with hypercapnic hypoxia can have a positive impact on the functional state of the nervous system of children with cerebral palsy and can be considered a method of improving the efficiency of standard therapy.
