Carla Silva-Batista1,2, Andrea Cristina de Lima-Pardini3, Mariana Penteado Nucci4, Daniel Boari Coelho5,6, Alana Batista4, Maria Elisa Pimentel Piemonte7, Egberto Reis Barbosa8, Luis Augusto Teixeira6, Daniel M Corcos9, Edson Amaro4, Fay B Horak10, Carlos Ugrinowitsch1. 1. Laboratory of Strength Training, School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil. 2. Exercise Neuroscience Research Group, University of São Paulo, São Paulo, SP, Brazil. 3. Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada. 4. Department of Radiology, University of São Paulo, São Paulo, SP, Brazil. 5. Biomedical Engineering, Federal University of ABC, São Bernardo do Campo, SP, Brazil. 6. Human Motor Systems Laboratory, School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil. 7. Faculty of Medical Science, University of São Paulo, São Paulo, SP, Brazil. 8. Movement Disorders Clinic, Department of Neurology, School of Medicine of the University of São Paulo, São Paulo, SP, Brazil. 9. Department of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, Illinois, USA. 10. Department of Neurology, Oregon Health and Science University, Portland, Oregon, USA.
Abstract
BACKGROUND: Exercises with motor complexity induce neuroplasticity in individuals with Parkinson's disease (PD), but its effects on freezing of gait are unknown. The objective of this study was to verify if adapted resistance training with instability - exercises with motor complexity will be more effective than traditional motor rehabilitation - exercises without motor complexity in improving freezing-of-gait severity, outcomes linked to freezing of gait, and brain function. METHODS: Freezers were randomized either to the adapted resistance training with instability group (n = 17) or to the active control group (traditional motor rehabilitation, n = 15). Both training groups performed exercises 3 times a week for 12 weeks. The primary outcome was the New Freezing of Gait Questionnaire. Secondary outcomes were freezing of gait ratio (turning task), cognitive inhibition (Stroop-III test), motor signs (Unified Parkinson's Disease Rating Scale part-III [UPDRS-III]), quality of life (PD Questionnaire 39), anticipatory postural adjustment (leg-lifting task) and brain activation during a functional magnetic resonance imaging protocol of simulated anticipatory postural adjustment task. Outcomes were evaluated before and after interventions. RESULTS: Only adapted resistance training with instability improved all the outcomes (P < 0.05). Adapted resistance training with instability was more effective than traditional motor rehabilitation (in improving freezing-of-gait ratio, motor signs, quality of life, anticipatory postural adjustment amplitude, and brain activation; P < 0.05). Our results are clinically relevant because improvement in the New Freezing of Gait Questionnaire (-4.4 points) and UPDRS-III (-7.4 points) scores exceeded the minimally detectable change (traditional motor rehabilitation group data) and the moderate clinically important difference suggested for PD, respectively. The changes in mesencephalic locomotor region activation and in anticipatory postural adjustment amplitude explained the changes in New Freezing of Gait Questionnaire scores and in freezing-of-gait ratio following adapted resistance training with instability, respectively. CONCLUSIONS: Adapted resistance training with instability is able to cause significant clinical improvement and brain plasticity in freezers.
RCT Entities:
BACKGROUND: Exercises with motor complexity induce neuroplasticity in individuals with Parkinson's disease (PD), but its effects on freezing of gait are unknown. The objective of this study was to verify if adapted resistance training with instability - exercises with motor complexity will be more effective than traditional motor rehabilitation - exercises without motor complexity in improving freezing-of-gait severity, outcomes linked to freezing of gait, and brain function. METHODS: Freezers were randomized either to the adapted resistance training with instability group (n = 17) or to the active control group (traditional motor rehabilitation, n = 15). Both training groups performed exercises 3 times a week for 12 weeks. The primary outcome was the New Freezing of Gait Questionnaire. Secondary outcomes were freezing of gait ratio (turning task), cognitive inhibition (Stroop-III test), motor signs (Unified Parkinson's Disease Rating Scale part-III [UPDRS-III]), quality of life (PD Questionnaire 39), anticipatory postural adjustment (leg-lifting task) and brain activation during a functional magnetic resonance imaging protocol of simulated anticipatory postural adjustment task. Outcomes were evaluated before and after interventions. RESULTS: Only adapted resistance training with instability improved all the outcomes (P < 0.05). Adapted resistance training with instability was more effective than traditional motor rehabilitation (in improving freezing-of-gait ratio, motor signs, quality of life, anticipatory postural adjustment amplitude, and brain activation; P < 0.05). Our results are clinically relevant because improvement in the New Freezing of Gait Questionnaire (-4.4 points) and UPDRS-III (-7.4 points) scores exceeded the minimally detectable change (traditional motor rehabilitation group data) and the moderate clinically important difference suggested for PD, respectively. The changes in mesencephalic locomotor region activation and in anticipatory postural adjustment amplitude explained the changes in New Freezing of Gait Questionnaire scores and in freezing-of-gait ratio following adapted resistance training with instability, respectively. CONCLUSIONS: Adapted resistance training with instability is able to cause significant clinical improvement and brain plasticity in freezers.
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