Profile of Ankle Isokinetic Strength and Proprioception in Elite Female Handball Players / Perfil de Fuerza Isokinética del Tobillo y Propiocepción en Jugadoras de Balonmano de Élite

SUMMARY: The evaluation of the invertor and evertor muscle strength and proprioception are important in terms of determining the risk of injury in handball players. The aim of this study was to determine the isokinetic strength and proprioception profile of the ankle invertor and evertor muscles of elite female handball players. Fifteen elite female handball players were included. Ankle invertor and evertor muscle strength and proprioception were evaluated using the isokinetic system. The isokinetic strength test was performed in concentric mode at 30°/s (5 repetitions) and 120°/s (10 repetitions). Proprioception sense was evaluated as active joint position sense. There was no statistically significant difference between the dominant and nondominant sides in terms of invertor and evertor muscle strength, evertor/invertor (Ever/Inver) ratio, and active joint position sense at both angular speeds (p>0.05). The Ever/Inver ratio on both sides was lower than normal values. It was concluded that the female handball players showed bilateral symmetry in the invertor and evertor muscles. However, the fact that the Ever/Inver strength ratio was lower than normal values on both sides suggested that caution should be exercised in terms of risks such as ankle sprain or chronic ankle instability. Pre-season evaluations should be made and it would be beneficial to add strengthening exercises to related muscle groups in training programs to normalize the unilateral ratios in these athletes.

La evaluación de la fuerza muscular inversora y eversora y la propiocepción son importantes para determinar el riesgo de lesión en los jugadores de balonmano. El objetivo de este estudio fue determinar la fuerza isocinética y el perfil de propiocepción de los músculos inversores y eversores del tobillo de jugadoras de balonmano de élite. Se incluyeron 15 jugadoras de élite de balonmano. La fuerza muscular inversora y eversora del tobillo y la propiocepción se evaluaron mediante el sistema isocinético. El test de fuerza isocinética se realizó en modo concéntrico a 30º/s (5 repeticiones) y 120º/s (10 repeticiones). El sentido de propiocepción se evaluó como sentido activo de posición articular. No hubo diferencias estadísticamente significativas entre los lados dominante y no dominante en términos de fuerza muscular inversora y eversora, relación eversor/inversor (Ever/ Inver) y sentido activo de la posición de la articulación en ambas velocidades angulares (p>0.05). La relación Ever/Inver en ambos lados fue inferior a los valores normales. Se concluyó que las jugadoras de balonmano presentaron simetría bilateral en los músculos inversores y eversores. Sin embargo, el hecho de que la relación de fuerza Ever/Inver fuera inferior a los valores normales en ambos lados sugirió que se debe tener precaución en términos de riesgos como el esguince de tobillo o la inestabilidad crónica de tobillo. Se deben realizar evaluaciones de pretemporada y sería beneficioso agregar ejercicios de fortalecimiento a los grupos musculares relacionados en los programas de entrenamiento para normalizar las proporciones unilaterales en estas atletas.

Proprioception Analysis following Anterior Cruciate Ligament Reconstruction using Stabilometry: A Prospective, Longitudinal Study / Análise de propriocepção por estabilometria após a reconstrução do ligamento cruzado anterior: Um estudo prospectivo e longitudinal

Abstract Objective Commonly used methods for measuring proprioception have resulted in conflicting reports regarding knee proprioception with anterior cruciate ligament (ACL) rupture and the influence of ACL reconstruction. Methods One hundred subjects (50 patients with radiologically and arthroscopically confirmed unilateral ACL rupture and 50 normal controls) were assessed with regards to proprioception using dynamic single-leg stance postural stabilometry. Instrumented knee ligament laxity and knee outcome scores were also measured. Of the 50 patients in the ACL group, 34 underwent reconstruction and were reassessed postoperatively. Results There was a significant proprioceptive deficiency in the ACL group compared with their contralateral knee ( p < 0.001) and to the control group ( p = 0.01). There was asignificant improvement in knee proprioception following ACL reconstruction compared to preoperative findings ( p = 0.003). There was no correlation between ligament laxity measurements and outcome scores. A significant correlation was found preoperatively between outcome scores and proprioception measurements. This correlation was not found post-operatively. Pre-operative proprioception testing had asignificant correlation (r = 0.46) with post-operative proprioception ( p = 0.006). Conclusion Patients with an ACL rupture had a proprioceptive deficit which improved following ligament reconstruction. Knee outcome scores had a better correlation with proprioception than ligament laxity. Proprioception may be a superior objective measure than ligament laxity in quantifying functional knee deficits and outcomes in patients with ACL ruptures. Level of Evidence III Therapeutic Study; Prospective Longitudinal Case-Control Study.

Resumo Objetivo Os métodos comumente usados para medir a propriocepção resultaram em relatos conflitantes sobre a propriocepção do joelho com ruptura do ligamento cruzado anterior (LCA) e a influência da reconstrução do LCA. Métodos A propriocepção de 100 indivíduos (50 pacientes com ruptura unilateral do LCA confirmada à radiologia e artroscopia e 50 controles normais) foi avaliada por estabilometria postural dinâmica em apoio unipodal. A lassidão ligamentar do joelho instrumentado e suas pontuações de desfechos também foram medidas. Dos 50 pacientes do grupo LCA, 34 foram submetidos à reconstrução e reavaliados no período pós-operatório. Resultados O grupo LCA apresentou deficiência proprioceptiva significativa em relaçãoaojoelho contralateral ( p < 0,001) e ao grupo controle ( p = 0,01). A propriocepção do joelho melhorou de maneira significativa após a reconstrução do LCA em relação aos achados pré-operatórios ( p = 0,003). Não houve correlação entre as medidas de lassidão ligamentar e as pontuações de desfechos. Além disso, observamos uma correlação significativa entre as pontuações de desfechos e as medidas de propriocepção antes da cirurgia. Essa correlação não foi detectada no período pós-operatório. O teste pré-operatório de propriocepção teve correlação significativa ( r = 0,46) com a propriocepção pós-operatória ( p = 0,006). Conclusão Os pacientes com ruptura do LCA apresentaram déficit proprioceptivo que melhorou após a reconstrução ligamentar. As pontuações de desfecho do joelho tiveram melhor correlação à propriocepção do que a lassidão ligamentar. A proprio-cepção pode ser uma medida objetiva superior à lassidão ligamentar na quantificação de déficits funcionais e desfechos do joelho em pacientes com ruptura do LCA. Nível de Evidência III Estudo Terapêutico; Estudo de Caso-Controle Longitudinal Prospectivo.

A new treatment for cervical dizziness

Abstract Objectives: To verify the rates of heat effectiveness generated by Carbon Nanotubes (CNT) in the resolution of dizziness in individuals diagnosed with Cervical Dizziness (CD). Methods: Randomized clinical trial was performed and samples from volunteers diagnosed with CD, divided into a Study Group (SG) and Control Group (CG). Patches containing CNT with thermotherapeutic effect were used in SG and inert patches in the CG. Treatment was performed over 30 days and measures of pain, dizziness and asymmetry of cervical muscle tension were evaluated over 60 days. Results: Pain, dizziness and asymmetry of cervical muscle tension were reduced in the SG. The variables analyzed in this study did not change in the CG. Conclusion: Our results show that the therapeutic effect of heat was effective in the treatment of patients diagnosed with CD. We could also observe a clear interrelationship between pain and dizziness symptoms with the asymmetry of cervical muscle tension. Level of evidence: 1B.

Impacts of balance under lower limb training / Impactos do equilíbrio sob treinamento dos membros inferiores / Impactos del equilibrio bajo entrenamiento de las extremidades inferiores

ABSTRACT Introduction How to scientifically improve the sports balance ability of table tennis players is a frequent question among current researchers. Increasing the explosive power and stability of the lower limbs to improve competitive performance is one of the main focuses of current research. Objective Analyze the impacts caused by lower limb training on the balance ability of table tennis players. Methods Junior table tennis students from a university were randomly divided into experimental and control groups. The control group had routine training while the experimental group had a protocol with lower limb training added. Results There was a statistical difference in the forward jump from 225.268 (± 13.229) cm before the experiment to 269.127 (± 9.331) cm after the experiment, and the left and right inclined jump values also followed this pattern after the experiment. The standing jump distance of the control group increased from 220.077 (± 21.124) cm before the experiment to 258.122 (± 15.1301) cm after the experiment. Conclusion Habitual sports training positively impacts table tennis players, but the effect is relatively slow and has low training efficiency. The lower limb strength training scheme proposed in this study showed improved sporting efficiency in athletes and expressive gains in their lower limb strength, positively impacting dynamic balance ability. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução Como melhorar cientificamente a capacidade de equilíbrio esportivo dos jogadores de tênis de mesa é uma questão frequente entre os pesquisadores atuais. Aumentar o poder explosivo e a estabilidade dos membros inferiores para melhorar o desempenho competitivo é um dos principais focos da pesquisa atual. Objetivo Analisar os impactos provocados pelo treinamento dos membros inferiores sobre a capacidade de equilíbrio dos jogadores de tênis de mesa. Métodos Os estudantes de tênis de mesa juniores de uma universidade foram divididos aleatoriamente em grupo experimental e grupo de controle. O grupo controle efetuou o treino de rotina enquanto ao grupo experimental foi adicionado um protocolo com treinamento dos membros inferiores. Resultados Houve diferença estatística de salto frontal de 225.268 (± 13.229) cm antes do experimento para 269.127 (± 9.331) cm após o experimento, e os valores de salto inclinado à esquerda e à direita também seguiram esse padrão após o experimento. A distância de salto em pé do grupo de controle aumentou de 220.077 (± 21.124) cm antes do experimento para 258.122 (± 15.1301) cm após o experimento. Conclusão O treinamento esportivo habitual revela impactos positivos sobre os jogadores de tênis de mesa, porém o efeito é relativamente lento e a eficiência do treinamento é baixa. O esquema de treinamento da força dos membros inferiores proposto neste trabalho demonstrou uma melhor eficiência esportiva nos atletas e ganhos expressivos de suas forças dos membros inferiores, impactando positivamente na capacidade de equilíbrio dinâmico. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción Cómo mejorar científicamente la capacidad de equilibrio deportivo de los jugadores de tenis de mesa es una pregunta frecuente entre los investigadores actuales. Aumentar la potencia explosiva y la estabilidad de los miembros inferiores para mejorar el rendimiento competitivo es uno de los principales objetivos de la investigación actual. Objetivo Analizar los impactos causados por el entrenamiento de las extremidades inferiores en la capacidad de equilibrio de los jugadores de tenis de mesa. Métodos Los estudiantes de tenis de mesa de una universidad fueron divididos aleatoriamente en grupo experimental y grupo de control. El grupo de control realizó un entrenamiento rutinario mientras que al grupo experimental se le añadió un protocolo con entrenamiento de los miembros inferiores. Resultados Hubo una diferencia estadística de 225,268 (± 13,229) cm de salto frontal antes del experimento a 269,127 (± 9,331) cm después del experimento, y los valores de salto inclinado izquierdo y derecho también siguieron este patrón después del experimento. La distancia de salto en pie del grupo de control aumentó de 220,077 (± 21,124) cm antes del experimento a 258,122 (± 15,1301) cm después del mismo. Conclusión El entrenamiento deportivo habitual revela impactos positivos en los jugadores de tenis de mesa, pero el efecto es relativamente lento y la eficacia del entrenamiento es baja. El esquema de entrenamiento de la fuerza de los miembros inferiores propuesto en este trabajo mostró una mejor eficiencia deportiva en los atletas y ganancias expresivas de su fuerza de los miembros inferiores, impactando positivamente en la capacidad de equilibrio dinámico. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

Influences of balance training on the physical fitness of martial arts athletes / Influências do treino de equilíbrio sobre a aptidão física dos atletas de artes marciais / Influencias del entrenamiento de equilibrio en la aptitud física de atletas de artes marciales

ABSTRACT Introduction: Chinese martial arts constitute an integral sport, demanding high capacity and physical fitness from its athletes. It is believed that functional balance training can enhance the performance of its athletes, as it strengthens and tones the muscles, stimulating the active proprioception of the executed movements. Objective: This paper investigates the effect of balance training on martial arts athletes and its impact on the execution of complex sports movements. Methods: Under experimental control, 100 martial arts athletes were selected and divided into two groups without statistical differences to perform the experiment. The experimental group added balance training, while the control group followed the usual training script. Sports fitness indices were measured before and after the intervention for statistical analysis. Results: The data regarding the balance index of the experimental group pre was 7.00±0.52, and after the experiment, it went to 8.40±0.47; the functional indices increased from 7.50±0.55 to 8.46±0.42. No statistically relevant changes were found in the control group. Conclusion: Functional balance training can complement daily training routines for greater benefits in martial arts athletes. The improvement of active proprioception statistically increases the ability of its practitioners in the execution of complex movements. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: As artes marciais chinesas constituem um esporte integral, exigindo alta capacidade e aptidão física de seus atletas. Acredita-se que o treinamento funcional de equilíbrio possa potencializar o desempenho de seus atletas, na medida em que fortalece e tonifica a musculatura estimulando a propriocepção ativa dos movimentos executados. Objetivo: Este artigo investiga o efeito do treino de equilíbrio nos atletas de artes marciais e os seus impactos na execução de movimentos esportivos complexos. Métodos: Sob um controle experimental, 100 atletas de artes marciais foram selecionados e divididos em dois grupos sem diferenças estatísticas para realizar o experimento. O grupo experimental adicionou o treino de equilíbrio, enquanto o grupo controle seguiu o roteiro de treino habitual. Índices de aptidão física esportiva foram mensurados antes e após a intervenção para análise estatística. Resultados: Os dados referentes ao índice de equilíbrio do grupo experimental prévios foram 7,00±0,52, e após o experimento foram para 8,40±0,47; os índices funcionais elevaram-se de 7,50±0,55 para 8,46±0,42. Não foram encontradas alterações estatisticamente relevantes no grupo controle. Conclusão: O treino funcional de equilíbrio pode ser adicionado complementarmente na rotina de treinamento diário para maiores benefícios dos atletas de artes marciais. O aprimoramento da propriocepção ativa aumenta estatisticamente a capacidade de seus praticantes na execução de movimentos complexos. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: Las artes marciales chinas constituyen un deporte integral, exigiendo alta capacidad y aptitud física de sus atletas. Se cree que el entrenamiento funcional del equilibrio puede potencializar el rendimiento de los atletas, en la medida en que fortalece y tonifica la musculatura estimulando la propiocepción activa de los movimientos ejecutados. Objetivo: Este trabajo investiga el efecto del entrenamiento del equilibrio en atletas de artes marciales y sus impactos en la ejecución de movimientos deportivos complejos. Métodos: Bajo control experimental, 100 atletas de artes marciales fueron seleccionados y divididos en dos grupos sin diferencias estadísticas para realizar el experimento. El grupo experimental añadió entrenamiento de equilibrio, mientras que el grupo de control siguió el guion de entrenamiento habitual. Se midieron los índices de aptitud deportiva antes y después de la intervención para su análisis estadístico. Resultados: Los datos relativos al índice de equilibrio del grupo experimental pre fueron de 7,00±0,52, y tras el experimento pasaron a 8,40±0,47; los índices funcionales aumentaron de 7,50±0,55 a 8,46±0,42. No se encontraron cambios estadísticamente relevantes en el grupo de control. Conclusión: El entrenamiento del equilibrio funcional puede añadirse complementariamente en la rutina diaria de entrenamiento para mayores beneficios de los atletas de artes marciales. La mejora de la propiocepción activa aumenta estadísticamente la habilidad de sus practicantes en la ejecución de movimientos complejos. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

Recovery of proprioception after lateral ankle sprain / 中国康复理论与实践

ObjectiveTo observe the recovery of proprioception of the affected ankle over time after lateral ankle sprain accepting routine rehabilitation. MethodsFrom June, 2020 to June, 2022, 18 patients with lateral ankle sprain in Kunshan Rehabilitation Hospital underwent routine rehabilitation for twelve weeks. They were measured active and passive position sense of bilateral ankles using an isokinetic dynamometer before treatment, and four, eight and twelve weeks after treatment, respectively. ResultsThe active presentation difference of affected ankle reduced after treatment (F = 22.533, P < 0.001), but it was more than that of the healthy ankle at the same time (t > 4.419, P < 0.001). No significant improvement was found in passive presentation difference of affected ankle after treatment (F = 1.175, P > 0.05), and it was not significantly different from those of the healthy ankle at the same time (|t| < 0.646, P > 0.05). ConclusionProprioception of affected ankle has been impaired after lateral ankle sprain, and it can be recovered after rehabilitation, but cannot achieve the healthy level even after three months of training. Passive position sense as an index of proprioception needs more researches.

Comparative effect of different neuromuscular exercises on pain and motor function of knee in patients with early knee osteoarthritis / 中国康复理论与实践

ObjectiveTo compare the effect of proprioceptive neuromuscular training methods on pain and motor ability of knee in patients with early knee osteoarthritis (KOA) . MethodsFrom November, 2022 to May, 2023, 60 early KOA patients from Beijing Bo'ai Hospital and community were randomly divided into groups A, B and C, with 20 patients in each group. Group A received proprioceptive neuromuscular facilitation (PNF), group B received neuromuscular exercise (NEMEX), and group C received PNF and NEMEX, for six weeks. They were assessed with Visual Analogue Scale for pain (VAS), angle reappearance test, difference of pre-motor reaction time (VM-VL), active range of motion (AROM) of knee flexion, 10-meter walk test (10MWT), and Knee Injury and Osteoarthritis Outcome Score (KOOS) before and after treatment. ResultsAll the indexes improved in all the groups after treatment (|t| > 2.532, P < 0.05). Among the groups, the VAS score was the least in group A, and then groups C and B; the angle reappearance error was the least in group C, and similar in groups A and B; the VM-VL was the least in groups A and C, followed by group B. ConclusionPNF, NEMEX and PNF+NEMEX can relieve the pain and improve the motor function of knee in patients with early KOA, however, PNF is the most effective on relieving pain, and PNF+NEMEX is the most effective on improving knee function.

Ankle proprioception after a stroke / 中华物理医学与康复杂志

Objective:To explore vibration, position and motion proprioception of the ankle joints after a stroke.Methods:Twenty-eight stroke survivors with impaired ankle proprioception were divided into a right-side stroke group ( n=18) and a left-side stroke group ( n=8). Twenty-two healthy volunteers constituted a control group. Vibration perception thresholds, passive and active joint angle resetting, and motion minimum thresholds were quantified among the stroke survivors on both the healthy and the affected side. With the controls the dominant and non-dominant sides were used. The differences in proprioception between the healthy volunteers and the stroke patients, between the affected side and the healthy side of the stroke patients, and between left- and right-side stroke patients were analyzed and compared. Results:Among the stroke survivors the vibration perception threshold on the affected side averaged (28.91±22.53)μm. The absolute difference in the perception of passive positioning was (5.49±5.39)° for 15° of plantar flexion and (4.48±3.89)° for 5° of dorsal extension. In active positioning plantar flexion was (5.23±4.34)° and for 30° of plantar flexion it was (3.26±1.73)°. The 5° dorsal extension error was (4.97±3.48)°. The motion perception thresholds between 20° of plantar flexion, 10° of plantar flexion and the neutral position were significantly higher, on average, than among the control group. The stroke group also had significantly higher motion perception thresholds than the control group.Conclusion:The vibration, position, and motion sense of the ankle joint on a stroke survivor′s affected side tend to be impaired, with the impairment of vibration and motion sensing tend to be more substantial. After stroke, there is also mild impairment of vibration, position and motion sensing in the healthy ankle joint. The impairment of proprioception caused by right cerebral hemisphere injury may be more serious than that caused by injury on the left.

Blood flow restriction can improve knee proprioception and motor coordination after anterior cruciate ligament reconstruction / 中华物理医学与康复杂志

Objective:To explore any effect of blood flow restriction during exercise on knee proprioception and motor coordination after anterior cruciate ligament (ACL) reconstruction.Methods:Thirty patients recovering from ACL reconstruction were randomly divided into an experimental group and a control group, each of 15. Both groups were given routine rehabilitation training, while the experimental group was additionally provided with 45 minutes of training with blood flow restriction, 3 times a week for 8 weeks. The blood flow restriction training involved constant pressure in the groin while the patient performed knee flexion and extension resistance training, squats, alternate knee flexion and extension and ergometer cycling. Before and after the intervention, both groups′ knee function, proprioception and lower limb motor coordination were evaluated using the Lysholm knee scale, the Humac isokinetic measurement system and surface electromyography.Results:Before the experiment there were no significant differences between the two groups in any of the measurements. After the intervention, both groups′ average Lysholm score had improved significantly, and errors in reproducing a knee angle had decreased significantly. Significantly better improvement was observed in the observation group than in the control group. That group′s average coordinated contraction rate on the affected side in extension and flexion was also significantly better than the control group′s ave-rage. Indeed, there were no significant differences in the contraction rates between the healthy and affected sides.Conclusions:Training with restricted blood flow can significantly improve knee function, proprioception and motor coordination after anterior cruciate ligament reconstruction.

Effects of functional training on proprioception in sport athletes / Efeitos do treinamento funcional na propriocepção física de atletas esportivos / Efectos del entrenamiento funcional en la propiocepción física de los deportistas

ABSTRACT Introduction Physical training is a well-known training method in competitive sports. However, in the majority of the physical training classes, the focus is still on the traditional exercises of physical conditioning as strength, speed, resistance, etc., directed for young athletes that are in the growth and development phase, without a literary base to assure actual effectiveness in the load increases for the athletic performance facing the risks in the athletes' physical proprioception. Objective Explores the effect of functional training on the physical sensibility of sports athletes. Methods The data collection method is used in the daily training of six notable athletes in a district sports school: judo, martial arts, wrestling, tennis team, swimming team, and table tennis team, adding the functional training protocol in body movement. Results The average performance of the groups before and after the experiment was collected and confronted, the difference test was performed, and the test result found P>0.05. The athletes in the experimental group not only improved the footwork speed and physical coordination, the movement speed of the footwork and the speed of the connection between movements increased significantly in the sixth week, reflecting more excellent stability and motor coordination in the movements. Proprioception is one of the essential sports qualities of the human body; it is directly related to physical qualities such as speed and strength and is also closely related to the different neural pathways. Conclusion Functional training can improve athletes' physical flexibility and motor coordination; it can also stimulate body proprioceptors, increase athletes' confidence, and make training more efficient and effective. Evidence level II; Therapeutic Studies - Investigating the results.

RESUMO Introdução O treinamento físico é um método de treinamento bastante conhecido em esportes competitivos. Porém, na maioria das aulas de treinamento físico, o foco ainda está nos exercícios tradicionais de condicionamento físico como força, velocidade, resistência, etc., voltados para jovens atletas que estão em fase de crescimento e desenvolvimento, sem embasamento literário para assegurar uma real eficácia nos aumentos de carga para o desempenho atlético frente aos riscos na propriocepção física dos atletas. Objetivo Explorar o efeito do treinamento funcional na sensibilidade física de atletas esportivos. Métodos O método de coleta de dados é utilizado no treinamento diário de seis diferentes atletas especiais em uma escola de esportes distrital: judô, artes marciais, luta livre, equipe de tênis, equipe de natação e equipe de tênis de mesa, agregando o protocolo de treino funcional em movimento corporal. Resultados O desempenho médio dos grupos antes e depois do experimento foram coletados e confrontados, o teste de diferença foi realizado, sendo o resultado do teste encontrado P>0,05. Os atletas do grupo experimental não apenas melhoraram a velocidade de trabalho com os pés e a coordenação física, a velocidade do movimento do trabalho com os pés e a velocidade da conexão entre os movimentos aumentaram significativamente na sexta semana, refletindo maior estabilidade e coordenação motora nos movimentos. A propriocepção é uma das qualidades esportivas essenciais do corpo humano, não está apenas diretamente relacionada às qualidades físicas, como velocidade e força, mas também está intimamente relacionada as diferentes vias neurais. Conclusão O treinamento funcional pode melhorar a flexibilidade física e a coordenação motora dos atletas; também pode estimular os proprioceptores corporais, aumentar a confiança dos atletas e tornar o treinamento mais eficiente e eficaz. Nível de evidência II; Estudos terapêuticos - Investigação de resultados.

RESUMEN Introducción El entrenamiento físico es un método de entrenamiento muy conocido en los deportes de competición. Sin embargo, en la mayoría de las clases de entrenamiento físico, el enfoque sigue siendo los ejercicios tradicionales de acondicionamiento físico como fuerza, velocidad, resistencia, etc., dirigidos para jóvenes atletas que están en fase de crecimiento y desarrollo, sin base literaria para asegurar una eficacia real en los aumentos de carga para el rendimiento atlético frente a los riesgos en la propiocepción física de los atletas. Objetivo Explorar el efecto del entrenamiento funcional en la sensibilidad física de los deportistas. Métodos El método de recogida de datos se utiliza en el entrenamiento diario de seis atletas especiales diferentes en una escuela deportiva distrital: judo, artes marciales, lucha, equipo de tenis, equipo de natación y equipo de tenis de mesa, añadiendo el protocolo de entrenamiento funcional en el movimiento corporal. Resultados Se recogió el rendimiento medio de los grupos antes y después del experimento y se confrontó, se realizó la prueba de la diferencia y el resultado de la prueba fue P>0,05. Los atletas del grupo experimental no sólo mejoraron la velocidad del trabajo de pies y la coordinación física, sino que la velocidad del movimiento de pies y la velocidad de la conexión entre los movimientos aumentaron significativamente en la sexta semana, lo que refleja una mayor estabilidad y coordinación motora en los movimientos. La propiocepción es una de las cualidades deportivas esenciales del cuerpo humano, no sólo está directamente relacionada con cualidades físicas como la velocidad y la fuerza, sino que también está estrechamente relacionada con las diferentes vías neuronales. Conclusión El entrenamiento funcional puede mejorar la flexibilidad física y la coordinación motora de los atletas; también puede estimular los propioceptores corporales, aumentar la confianza de los atletas y hacer que el entrenamiento sea más eficiente y eficaz. Nivel de evidencia II;Estudios terapéuticos - Investigación de resultados.

Characteristics of Proprioception in Patients with Knee Osteoarthritis / 医用生物力学

Objective To explore the proprioception characteristics of knee joints for knee osteoarthritis (KOA) patients before unicondylar knee arthroplasty (UKA) and total knee arthroplasty (TKA). Methods Twenty-nine single-compartment KOA patients were selected. Fifteen patients were treated with UKA (UKA group) and fourteen patients were treated with TKA (TKA group). The test was performed 1 to 3 days before the operation.The keen society scores (KSS) of KOA patients in UKA group and TKA group were compared, and their joint position sense and kinesthesia were compared with control group. Results Significant differences in KSS were found in TKA group and UKA group, and the knee joint position sense and kinesthesia showed no significant differences between TKA group and UKA group.There were no significant differences in the knee joint position sense and kinesthesia between the operated leg and unoperated leg in TKA group and UKA group, and between the left leg and right leg in control group. Compared with control group, there were significant differences between UKA group and TKA group in 60° position sense of the operated leg and unoperated leg.The kinesthesia of the operated leg and unoperated leg in UKA group and TKA group were also significantly different from that in control group. Conclusions Compared with control group, the proprioception of the knee joint in KOA patients was significantly reduced before the surgery, but the characteristics of proprioception in UKA group and TKA group were similar.

Efectos del autoinjerto hueso-tendón patelar-hueso sobre la posición articular y la fuerza en pacientes con reconstrucción del ligamento cruzado anterior / Effects of bone-patellar tendon-bone autograft on joint position and strength in patients with anterior cruciate ligament reconstruction

RESUMEN: El objetivo del estudio fue comparar el déficit propioceptivo a través del Joint position sense (JPS) y Force steadiness en pacientes con reconstrucción del ligamento cruzado anterior (LCA) injerto hueso-tendón patelar-hueso (HTH) 6 a 12 meses postcirugía. Participaron 15 pacientes (13 hombres y 2 mujeres, 25,5 ± 1,3 años) con reconstrucción de LCA con autoinjerto HTH y 20 personas sin lesión del LCA (19 hombres y 1 mujer, 24,1 ± 0,8 años). Para evaluar la sensación de posición de la articulación de la rodilla se midió la Joint position sense (JPS) en tres rangos: 0°-30°, 31°-60° y 61°-90° y la sensación de fuerza del cuádriceps fue evaluada con la prueba Force steadiness (FS) al 15 % de la contracción voluntaria máxima (CVM), ambas pruebas realizadas 6 a 12 meses post cirugía. Los resultados mostraron que no hubo diferencias estadísticamente significativas en la sensación de la posición articular (JPS 0°-30°) (p=0.564) y 31°-60° (p=0.681), mientras que en el rango 61°-90° (p=0.003) existieron diferencias estadísticamente significativas. En las mediciones de sensación de fuerza del cuádriceps (FS al 15 % CVM) entre los pacientes operados de LCA técnica HTH y el grupo control no hubo diferencias estadísticas (p= 0.987) La sensación de la fuerza del cuádriceps medida con la prueba FS al 15 % CVM no presentaría déficit entre los 6 a 12 meses en pacientes post operados de LCA al ser comparados con sujetos sin lesión ni cirugía de este ligamento. Se concluye que la sensación de la posición articular medida con la prueba JPS en en tres rangos articulares de pacientes con reconstrucción de LCA injerto HTH 6 a 12 meses post cirugía sólo mostró alteraciones en el rango de 61°- 90° al ser comparado con el grupo control, lo cual indica que la sensación de la posición articular presenta un déficit en este rango específico.

SUMMARY: The aim of the study was to compare the proprioceptive deficit through the Joint position sense (JPS) and Force steadiness in patients with anterior cruciate ligament (ACL) bone-patellar tendon-bone graft (PTH) reconstruction 6 to 12 months post-surgery. Fifteen patients (13 men and 2 women, 25.5 ± 1.3 years) with ACL reconstruction with HTH autograft and 20 persons without ACL injury (19 men and 1 woman, 24.1 ± 0.8 years) participated. To assess knee joint position sensation, Joint position sense (JPS) was measured in three ranges: 0°-30°, 31°- 60° and 61°-90° and quadriceps strength sensation was assessed with the Force steadiness (FS) test at 15 % of maximal voluntary contraction (MVC), both tests performed 6 to 12 months post surgery. The results showed that there were no statistically significant differences in joint position sensation (JPS 0°-30°) (p=0.564) and 31°-60° (p=0.681), while in the range 61°-90° (p=0.003) there were statistically significant differences. In the quadriceps strength sensation measurements (FS at 15 % CVM) between the patients operated on ACL HTH technique and the control group there were no statistical differences (p= 0.987). The quadriceps strength sensation measured with the FS test at 15 % CVM would not present a deficit between 6 to 12 months in post- operated ACL patients when compared to subjects without injury or surgery of this ligament. It is concluded that the joint position sensation measured with the JPS test in three joint ranges of patients with ACL reconstruction HTH graft 6 to 12 months post surgery only showed alterations in the range of 61°- 90° when compared to the control group, indicating that the joint position sensation presents a deficit in this specific range.

Lateral and functional asymmetries in the lower limbs of college-level female handball players

Abstract Aim: The present study aimed to screen for differences in isokinetic peak torque, hamstrings-to-quadriceps ratio, and proprioception within the lower limbs of female handball athletes. Methods: Twelve college-level female handball athletes with no previous experience with resistance training performed five maximal isokinetic contractions of the knee extensors and knee flexors to determine isokinetic peak torque and hamstring-to-quadriceps ratios. Proprioception was determined by assessing passive position sense on an isokinetic dynamometer. Results: The athletes presented significantly greater (p < 0.01) knee extensors isometric peak torque for the jumping limb (144.9 ± 23.1) when compared to the non-jumping limb (132.9 ± 21.5). The Hamstrings-to-quadriceps ratio was below 0.6 for both limbs, being significantly greater (p < 0.01) for the non-jumping limb (0.56 ± 0.08) when compared to the jumping limb (0.50 ± 0.08). Conclusion: Female handball athletes that do not engage in resistance training can experience functional bilateral asymmetries in the knee extensors and knee-joint instability, as assessed by the hamstrings-to-quadriceps ratio due to the asymmetric characteristics of handball. Regular strength training might correct such asymmetries and instabilities.

Functional and biochemical improvement following total knee arthroplasty in early postoperative period

SUMMARY OBJECTIVE: There are very few studies about total knee arthroplasty biomechanical and biochemical effects in the early postoperative period. The aim of this study was to investigate the effect of total knee arthroplasty on pain intensity, knee joint valgus angle, malalignment, functional status, knee joint position sense, and cytokine levels. METHODS: A total of 29 patients (female/male: 24/5) who underwent total knee arthroplasty were included in the late-stage knee osteoarthritis group, and 22 patients (female/male: 13/9) with grade 4 osteoarthritis were included in the early-stage knee osteoarthritis group. The visual analog scale and the Western Ontario and McMaster Universities Osteoarthritis Index were used to evaluate the pain intensity and functional status. Alignment and knee position sense measurements were also calculated. Systemic venous blood samples were taken to evaluate the interleukin-6, tumor necrosis factor-alpha, and interleukin-1 beta cytokine levels. RESULTS: In the study group, there were positive improvements in pain intensity, functional status, valgus angle, malalignment, amount of joint position sense deviation at 70° knee flexion angle parameters, and interleukin-6 of patients at the postoperative 6th week compared to the preoperative period (p<0.05). The patients in the study group had similar or better results in pain intensity, functional status, valgus angle, malalignment, amount of joint position sense deviation at 35°, 55°, and 70° knee flexion angles parameters, and in interleukin-6, compared to the control group at postoperative 6th week. CONCLUSION: Total knee arthroplasty provides improvements in pain, function, valgus angle, joint position sense, and interleukin-6 in the early postoperative period.

The consequence of head-loading on the neuro-musculoskeletal health of the ILembe District youth of KwaZulu-Natal

Background: Head-loading, as a mode of transporting food, water and firewood, is a longstanding tradition assigned to female South African youth and has been associated with adverse health consequences. Objectives: This study determined the impact of head-loading on the neuromusculoskeletal health and proprioception of female South African youth. Method: This study comprised a counterbalanced, within-subject, single-factor experimental design which compared the changes that occurred when the same independent variable (head-loading) within two homogenous groups was measured in terms of the dependent variables (outcomes: neuromusculoskeletal pain and proprioception) at two time periods, before and after the introduction of the independent variable. A cohort of South African female youth (n = 100), aged 9­17 years, voluntarily partook in the study. The participants were randomly distributed into an experimental (n = 50) and a control (n = 50) group. The experimental group stood in a head-loaded state with their respective habitual head-load mass. Their proprioception measurements were compared during their unloaded versus loaded states, with the proprioceptive measurements including the total proprioception index, the anterior­posterior (front­back) index and the medial­lateral (side-to-side) index. Participants furthermore completed a head-loading health-related questionnaire. Results: Participants had a mean age of 12.3 ± 2.5 years, body mass of 44.4 ± 13.7 kg, stature of 145 ± 10 cm and a head-load mass of 8.0 ± 2.5 kg. Participants had poorer medial­lateral proprioception during head-loading as compared to their unloaded state (1.4 ± 0.8 as compared to 1.6 ± 0.9) (p < 0.05). Most youth (96%) experienced neuromusculoskeletal pain in their cervical vertebrae (40.9%), shoulders (27.3%), lumbar vertebrae (10.7%), arms (8.3%), legs (8.3%), knees (1.9%), fingers (1.5%), toes (0.5%) and thoracic vertebrae (0.5%) (χ2: p < 0.05). Conclusion: Head-loading adversely affects the medial­lateral proprioception and neuromusculoskeletal health of participants.

Effects of proprioception training combined with core stability training on balance ability of college students / 中国学校卫生

Objective@#To explore the effect of proprioception combined with core stability training on the static balance ability and dynamic balance ability of college students, and to provide an experimental basis for studying body balance ability and preventing sports injuries.@*Methods@#In August 2019, 112 non sports students from Shandong Institute of Physical Education were recruited, and 52 subjects were selected as the intervention group and 60 as the control group by random number table method. The intervention group was given proprioceptive training combined with core stability training, while the control group was given core stability training. The static and dynamic balance abilities of the two groups of subjects before and after training were compared.@*Results@#The static balance ability of the intervention group was higher than that before the intervention ( F =2.17， P <0.05) at the 5th and 11th weeks, which were 18.31% and 47.37% higher, respectively. The ability to stand on one foot with eyes closed at the 11th week in the intervention group was higher than that in the control group at the 11th week( t =2.25， P <0.05). After training, the equilibrioception of the intervention group was improved, increasingly improved in the 11th week. And compared with that in intervention group in the 5th and 11th week, the ability was also higher than the balance ability of the intervention group before the intervention( F =2.37， P <0.01), 12.01% and 12.99% higher, respectively.@*Conclusion@#Proprioception and core stability training can effectively improve the static and dynamic balance ability of college students, and the training effect of proprioceptive training combined with core stability training is better than that of core stability training.

The reliability and validity of using a head-neck relocation test to assess cervical position sense / 中华物理医学与康复杂志

Objective:To observe the reliability and validity of using a head-neck relocation test (HRT) in assessing cervical position sense.Methods:A total of 62 subjects were recruited, including 32 with neck pain and 30 healthy subjects. All received two HRTs conducted by two independent assessors at a first session, and then they received another HRT 24 hours later administered by one of them. The joint position error (JPE) was measured in the four directions of cervical motion: flexion, extension, levorotation and dextrorotation. The intra- and inter-rater reliability was quantified in terms of intra-class correlation coefficients (ICCs) and the difference in JPE between the two groups was also determined for validity.Results:The intra- and inter-rater reliability for the HRT in the four directions had ICC values of 0.603-0.830 and 0.597-0.837 respectively. The corresponding standard error of measurement (SEM) values were 1.52-2.15cm and 1.69-2.09cm, while the minimal detectable change (MDC) values were 4.20-5.97cm and 4.69-5.79cm, respectively. The patients with neck pain had significantly larger JPE in cervical extension and right rotation compared to healthy individuals, on average. And their JPE for cervical extension had an area under the curve (AUC) of the receiver′s operating curve of 0.755.Conclusions:The HRT showed good intra- and inter-rater reliability in assessing cervical joint position sense. The JPE for cervical extension can be used to discriminate those with neck pain from healthy subjects.

Kinesioterapia propioceptiva en la recuperación de la fuerza, en pacientes diabéticos con capsulitis adhesiva / Kinesioterapia proprioceptiva na recuperação da força em pacientes diabéticos com capsulite adesiva / Proprioceptive kinesiotherapy in the recovery of strength in diabetic patients with adhesive capsulitis

RESUMEN El hombro se considera la articulación más móvil e inestable del cuerpo humano. La capsulitis adhesiva es una patología frecuente en el hombro, es de causa desconocida, curso variable, y de tratamiento controversial, frecuentemente asociada a diabetes mellitus. La rehabilitación de la misma, tradicionalmente ha correspondido a ejercicios con peso y movimientos pendulares. La kinesioterapia propioceptiva es pilar fundamental durante la rehabilitación de esta patología. El objetivo de la investigación es demostrar la influencia de los ejercicios físico-propioceptivos en el alivio del dolor y la recuperación de la fuerza muscular, en pacientes con capsulitis adhesiva. Se realizó un estudio experimental de corte explicativo, longitudinal, cualitativo-cuantitativo con grupo control, en una población de 30 pacientes que recibieron tratamiento rehabilitador de hombro, en el Instituto de Medicina Deportiva de La Habana, Cuba, durante tres meses consecutivos, en el período comprendido entre enero y diciembre de 2017. A ambos grupos, se les realizó evaluación clínica, historia clínica y aplicación de la Escala de Constant antes y después del tratamiento. Los pacientes del Grupo Experimental realizaron un sistema de ejercicios propioceptivos y los pacientes del Grupo Control realizaron ejercicios pendulares. El alivio del dolor se alcanzó durante el primer mes de tratamiento en el grupo experimental, pues presentó mejores resultados en la recuperación de la fuerza muscular que el Grupo Control entre el segundo y tercer mes de tratamiento (p=1,000). En conclusión, los ejercicios propioceptivos permiten, en poco tiempo, aliviar el dolor de hombro, así como recuperar la fuerza muscular en pacientes con capsulitis adhesiva.

RESUMO O ombro é considerado a articulação mais móvel e instável do corpo humano. A capsulite adesiva é uma patologia comum do ombro, de causa desconhecida, curso variável e tratamento controverso, frequentemente associada ao diabetes mellitus. A reabilitação tem envolvido tradicionalmente exercícios de peso e movimentos pendulares. A Kinesioterapia proprioceptiva é um pilar fundamental durante a reabilitação desta patologia. O objetivo da pesquisa é demonstrar a influência dos exercícios físicos-proprioceptivos no alívio da dor e na recuperação da força muscular em pacientes com capsulite adesiva. Foi realizado um estudo experimental explicativo, longitudinal, qualitativo-quantitativo com um grupo de controle em uma população de 30 pacientes que receberam tratamento de reabilitação do ombro no Instituto de Medicina Esportiva em Havana, Cuba, durante três meses consecutivos, no período de janeiro a dezembro de 2017. Ambos os grupos foram submetidos a avaliação clínica, histórico clínico e aplicação da Escala Constante antes e depois do tratamento. Os pacientes do Grupo Experimental realizaram um sistema de exercícios proprioceptivos e os pacientes do Grupo de Controle realizaram exercícios de pêndulo. O alívio da dor foi alcançado durante o primeiro mês de tratamento no Grupo Experimental, que mostrou melhores resultados na recuperação da força muscular do que no Grupo de Controle entre o segundo e terceiro mês de tratamento (p=1.000). Em conclusão, os exercícios proprioceptivos permitem, em pouco tempo, aliviar a dor no ombro, assim como recuperar a força muscular em pacientes com capsulite adesiva.

ABSTRACT The shoulder is considered the most mobile and unstable joint of the human body. Adhesive capsulitis is a common pathology in the shoulder, with unknown cause, variable course, and controversial treatment, often associated with diabetes mellitus. The rehabilitation of the same traditionally has corresponded to weight-bearing exercises and pendulum movements. Proprioceptive kinesiotherapy is a fundamental pillar during the rehabilitation of this pathology. The objective of this research is to demonstrate the influence of physical proprioceptive exercises in pain relief and muscle strength recovery in patients with adhesive capsulitis. An experimental study of explanatory cut, longitudinal, qualitative-quantitative with control group, in a population of 30 patients who received rehabilitative treatment of shoulder, in the Institute of Sports Medicine of Havana, Cuba, during three consecutive months, in the period between January and December 2017 was carried out. Both groups underwent clinical evaluation, clinical history and application of the Constant Scale before and after treatment. Patients in the Experimental Group performed a proprioceptive exercise system and patients in the Control Group performed pendulum exercises. Pain relief was achieved during the first month of treatment in the experimental group, since it presented better results in the recovery of muscle strength than the Control Group between the second and third month of treatment (p=1.000). In conclusion, proprioceptive exercises allow, in a short time, to relieve shoulder pain, as well as to recover muscle strength in patients with adhesive capsulitis.

Limitações à utilização da escala integrada de rastreio da propriocepção: estudo de viabilidade de um inquérito transversal / A limitation on the use of Integrated Proprioception Screening Scale: a feasibility cross-sectional survey study

INTRODUÇÃO: A propriocepção é essencial durante a implementação do movimento para atualizar os comandos de alimentação adiante resultantes da imagem visual e no planejamento e alteração de comandos motores gerados internamente. A escala integrada de rastreio da propriocepção (IPSS) avalia a propriocepção em vários domínios diferentes em pessoas com doença de Parkinson. OBJETIVOS: Determinar as limitações da IPSS enfrentadas por fisioterapeuta neurológico e voluntários geriátricos em ambientes clínicos. MATERIAIS E MÉTODOS: Dez Neuro-fisioterapeutas e trinta voluntários geriátricos de cada terapeuta foram recrutados para este estudo de viabilidade de pesquisa transversal. Os participantes foram selecionados de acordo com os critérios de inclusão. Os questionários foram projetados e criados para avaliar as dificuldades enfrentadas pelos terapeutas e voluntários geriátricos em termos de tempo necessário para a administração da escala, do nível de compreensão da escala e seus subníveis, e o esforço físico experimentado pelo terapeuta e voluntários geriátricos. A IPSS foi administrada pelo terapeuta. Goniômetro Universal, fita métrica e dispositivo de rastreamento de movimento foram usados durante a administração da IPSS. Após a administração, os questionários foram distribuídos e preenchidos por Neuro-fisioterapeutas e voluntários geriátricos. O teste Shapiro-Wilk foi usado para testar a normalidade, pois os dados eram inferiores a 50. RESULTADOS: Os dados foram expressos em mediana e intervalo. Skewness e Kurtosis também foram medidos. As variáveis foram expressas na forma de gráficos circulares. CONCLUSÃO: O estudo concluiu que o IPSS tem várias limitações como subjetivamente relatado pelos terapeutas e voluntários.

INTRODUCTION: Proprioception is essential during the movement implementation to update the feedforward commands resulting from the visual image and in planning and amendment of internally generated motor commands. The integrated proprioception screening scale (IPSS) assesses proprioception in different domains in people with Parkinson's disease. OBJECTIVES: To determine the limitations of IPSS faced by Neuro-physiotherapists and geriatric volunteers in clinical settings. MATERIALS AND METHODS: Ten Neuro-physiotherapists and thirty geriatric volunteers under each therapist were recruited for this feasibility cross-sectional survey study. Participants were selected according to the inclusion criteria. Questionnaires were designed and created to evaluate difficulties faced by therapists and geriatric volunteers in terms of time taken for the administration of the scale, level of understanding of the scale and its sublevels, and physical exertion experienced by both therapists and geriatric volunteers. The therapist administered IPSS. Universal Goniometer, measuring tape, and motion tracking device were used during the IPSS administration. After administration, Questionnaires were circulated and filled by Neuro-physiotherapists and geriatric volunteers. Shapiro-Wilk test was used for testing the normality, as data was less than 50. RESULTS: As the data follows not a normal distribution, data was expressed in median and range. Skewness and Kurtosis were also measured. Variables were expressed in the form of pie charts. CONCLUSION: The study concluded that IPSS has several limitations as subjectively reported by the therapists and volunteers.

Validation study of a software for proprioceptive evaluation / Estudo de validação de um programa de computador para avaliação proprioceptiva

Objective: To validate the PhisioPlay software for proprioceptive evaluation of the shoulder joint based on the data obtained by isokinetic dynamometry equipment. Methods: Thirty-one individuals constituted a single group for proprioceptive evaluation of both shoulder joints by means of joint position sense (JPS). The testing protocol of PhisioPlay consisted of the abduction movement of the shoulder to the target angles of 45° and 90° and the maintenance of these positions for 30 seconds. In the isokinetic dynamometer, the test was performed using its proprioceptive evaluation protocol for the same movement, target angles, and maintenance time established for the previous test. Results: For the 90° variables, statistical analysis pointed to agreement for the dominant limb in relation to the mean angulation and the absolute difference and for the non-dominant limb in relation to the absolute difference. The results of mean comparisons of the absolute differences via the Wilcoxon Test corroborate the literature regarding the behavior of the JPS considering joint amplitude, lateral dominance, and greater or lesser torque affecting the joint. Reliability and sensitivity measures also strengthen the conclusions. Conclusion: The results point to the construct validity of the PhisioPlay software for evaluating the JPS of the shoulder joint at 45° and 90° and suggest that the JPS is more influenced by the angle of the joint during the motor task than by the lateral dominance.

Objetivo: Validar do software PhisioPlay para avaliação proprioceptiva da articulação do ombro realizando movimento de abdução a 45º e 90º utilizando os dados obtidos por um equipamento de dinamometria isocinética. Métodos: Trinta e um indivíduos compuseram um único grupo de avaliação da propriocepção pelo senso de posição articular (SPA) do ombro. O protocolo de teste no PhisioPlay consistiu no movimento de abdução do ombro para o ângulo alvo de 45° e 90° e sua manutenção por 30 segundos. No dinamômetro isocinético o teste foi realizado utilizando seu protocolo de avaliação proprioceptiva para o mesmo movimento, ângulos alvo e tempo de manutenção no ângulo alvo estabelecidos para o teste anterior. Resultados: Para as variáveis de 90° foi observada concordância moderada para o membro dominante em relação à angulação média e à diferença absoluta, e para o membro não dominante em relação à diferença absoluta. O teste de Wilcoxon ao comparar os valores dos erros absolutos em relação ao ângulo alvo obtidos pelo PhisioPlay corroboram com a literatura sobre o comportamento do SPA observando amplitude articular, lateralidade e maior ou menor torque incidindo sobre a articulação. Medidas de confiabilidade e sensibilidade também reforçaram este comportamento. Conclusão: Os resultados apontam para validade de construto do software PhisioPlay para a avaliação do SPA da articulação do ombro a 45° e 90° e sugerem que o SPA é mais influenciado pela angulação da articulação durante a tarefa motora do que pela dominância lateral.