Radiographic and Clinical Evolution of the Oxford Unicompartmental Knee Arthroplasty.

The aim of the study is to evaluate whether the use of the new instrumentation Microplasty (MP) improves component positioning and the reliability of the surgical technique, reducing the implant outliers from the recommended range and providing a more accurate resection, while avoiding insufficient or excessive tibial resection and clinical scores. We prospectively analyzed clinical and radiographic outcomes of three consecutive cohorts for a total of 227 implants at a minimum follow-up of 36 months. The first cohort consisted of 67 Oxford unicompartmental knee arthroplasty (OUKA), using the phase III (Ph-III). The second cohort consisted of 136 OUKA, with the MP instrumentation. The third cohort consisted of 24 hypoallergenic OUKA, using the MP instrumentation (TiNbN). Postoperative alignment of the knee in the coronal and sagittal plane was measured using radiographs. No clinical differences were found among the three groups (p > 0.05). A significant difference was found on the slope between Ph-III and MP (p = 0.0005). Moreover, a significant difference was found in tibial angle and in tibial slope in arthroplasty with femoral size small (S), compared with size medium (M) or large (Ly) (tibia varus/valugs angle: p = 0.0484; tibial slope: p = 0.04). Similar results were found between small (AA, A, B) tibial size and large (C, D, E, F) tibial size for tibial varus/valgus (p = 0.03) angle and tibial slope (p = 0.003). A significant difference was found between Ph-III and MP in tibial slope in patients with body mass index (BMI) ≥25 kg/m2 (p = 0.0003). A positive correlation was noted between the femoral and tibial sizes and the tibial angle and the slope, and a negative correlation between weight and the tibial slope; furthermore, a positive correlation was found between Oxford knee score and radiographic angles. The MP instrumentation seems to be effective in determining the tibial cut and, particularly, improving the tibial slope, compared with Ph-III. The tibial slope is directly affected by the weight and measurements of the components, regardless of the instruments or the number of pegs, while clinical outcomes are correlated with implant position. This prospective comparative study reflects level of evidence II.

Apoyo parental percibido y motivación adolescente hacia la actividad física / Perceived parental support and adolescents' motivation toward physical activity / Apoio parental percebido e motivação adolescente para a atividade física

Este estudio pretendió conocer en qué medida diferentes formas de apoyo social materno y paterno incrementaban el porcentaje de varianza explicada de motivación autodeterminada hacia la práctica de actividad físico-deportiva de sus hijos, más allá de la proporción atribuida a un conjunto de variables personales (sexo, edad e índice de masa corporal). Cuatrocientos sesenta y nueve adolescentes (50.3% chicas) con edades comprendidas entre los 12 y los 16 años de edad participaron en el estudio. Los instrumentos empleados fueron una adaptación al castellano de la Activity Support Scale y del Behavioral Regulation in Exercise Questionnaire-2. El análisis estadístico principal consistió en un procedimiento de regresión jerárquica. Los resultados revelaron que para el caso de la motivación identificada el porcentaje de varianza explicada por el modelo ascendió hasta el 25%. Además del sexo y la edad, el apoyo instrumental atribuido a madres y padres contribuía a la explicación de la variabilidad observada. Respecto a la motivación intrínseca, el porcentaje de varianza explicada fue del 27%. Más allá del sexo, el apoyo instrumental materno y paterno contribuyeron a la explicación de la variabilidad observada. La percepción juvenil de la provisión de recursos materiales y económicos se asoció con una orientación motivacional que destaca los beneficios que aporta, así como el disfrute y satisfacción que se deriva de la realización de actividad física

This study aimed to know to what extent different types of parental social support increased the percentage of explained variance for self-determined motivation toward physical activity practice of their children, apart from other variables such as gender, age, and body mass index. Four hundred and sixty-nine adolescents (50.3% female) aged between 12 and 16 years participated in this study. The Spanish adaptations of the Activity Support Scale and the Behavioral Regulation Exercise Questionnaire-2 were used to assess parental support for children's physical activity and self-determined motivation toward physical activity (PA), respectively. A hierarchical linear regression procedure was used for the main statistical analysis. Our results revealed that regarding identified motivation, the percentage of variance explained by the model increased to 25%. In addition to gender and age, parental instrumental support contributed to explain the observed variability. As for intrinsic motivation, the percentage of explained variance was 27%. Besides gender, perceived provision of maternal and paternal instrumental support were contributors to the observed variability. In conclusion, children's perception of the provision of material and financial resources was associated with a motivational orientation that emphasizes the benefits, enjoyment and satisfaction of performing physical activity

Este estudo pretendeu conhecer em que medida diferentes formas de apoio social materno e paterno incrementavam o percentual de variância explicado de motivação autodeterminada para a prática de atividade física esportiva de seus filhos, além da proporção atribuída a um conjunto de variáveis pessoais (sexo, idade, e índice de massa corporal). Quatrocentos e sessenta e nove adolescentes (50.3% meninas) com idades compreendidas entre os 12 a 16 anos de idade participaram no estudo. Os instrumentos empregados foram uma adaptação ao castellano da Activity Support Scale e do Behavioral Regulation in Exercise Questionnaire-2. A análise estatística principal consistiu em um procedimento de regressão hierárquica. Os resultados revelaram que para o caso da motivação identi„cada, o percentual de variância explicado pelo modelo ascendeu em 25%. Além do sexo e idade, o apoio instrumental atribuído a mães e pais contribuía para a explicação da variabilidade observada. Com respeito à motivação intrínseca, o percentual de variância explicada foi de 27%. Além do sexo, o apoio instrumental materno e paterno contribuiu à explicação da variabilidade observada. A percepção juvenil da provisão de recursos materiais e econômicos se associou com uma orientação motivacional que destaca os benefícios que aporta, assim como o desfrute e satisfação que se deriva da realização de atividade física

Does Body mass index moderate the relationship between parental support, fitness, and physical activity practice in adolescents? / ¿El índice de masa corporal modera la relación entre el apoyo parental, la condición física y la práctica de la actividad física de los adolescentes?

The present study aimed to determine whether the relationship between parental support and level of physical fitness and the amount of physical activity (PA) is moderated by the body mass index (BMI) of adolescents. A total of 748 pairs, which consisted of a parent and his/her adolescent child (13-17 year olds), took part in this study. Self-report measures related to parent support, weekly frequency of moderate-to-vigorous physical activity (MVPA) and enjoyment with PA, such as objective physical fitness (aerobic capacity, speed, and long broad jump) were used. Moderation regression analyses with PROCESS were used. Results showed that BMI moderated the relationship between instrumental support and aerobic capacity, as well as, between guided support and long broad jump. Additionally, parental support (instrumental and emotional) contributed to the explanation of the highest percentage of variance in the variables of weekly frequency of MVPA and enjoyment with PA. It is concluded that parental support can contribute to the improvement of the physical fitness and weekly MVPA o adolescents

El presente estudio pretendió conocer si la relación entre apoyo parental y el nivel de condición física y cantidad de actividad física (AF), estaba moderada por el índice de masa corporal (IMC) de los adolescentes. Un total de 748 diadas padres-hijos adolescentes (13-17 años de edad) participaron en este estudio. Medidas de autoinforme relacionadas con el apoyo parental, frecuencia semanal de AF y la diversión asociada a dicha práctica, así como medidas de condición física objetiva (capacidad aeróbica, velocidad y salto de longitud horizontal) fueron empleadas. Se llevó a cabo un análisis de regresión moderada empleando PROCESS. Los resultados mostraron que el IMC moderó la relación entre apoyo instrumental y capacidad aeróbica, así como la relación entre apoyo guiado y longitud de salto horizontal. Adicionalmente, el apoyo parental (instrumental y emocional) explicaba el mayor porcentaje de varianza en las variables frecuencia semanal y diversión asociada a la práctica de AF. Se concluye que el apoyo parental puede contribuir a mejorar la condición física e incrementar la práctica de AF de los hijos adolescentes

The Activities-specific Balance Confidence scale: reliability and validity in Spanish patients with vestibular disorders.

PURPOSE: To examine the reliability and validity of the Spanish version of the Activities-specific Balance Confidence scale (ABC-S), and its ability to discriminate between patients with and without a history of falls among a Spanish population with vestibular disorders. METHOD: A total of 84 participants completed the ABC-S. Internal consistency, test-retest reliability and construct validity (exploratory factor analysis) were analysed. Concurrent validity was evaluated using the 12-item Short Form Health Survey (SF-12) and the Dizziness Handicap Inventory (DHI). To determine the accuracy of the ABC total score in discriminating patients with and without a history of falls, a receiver operating characteristic (ROC) curve analysis was performed. RESULTS: The ABC-S showed excellent internal consistency (Cronbach's α = 0.916) and substantial test-retest reliability (ICC = 0.86, 95% CI: 0.74-0.93), with standard error and minimal detectable change values of 8.64 and 16.94, respectively. Factor analyses suggested a three-factor structure (explained variance was 62.24%). The ABC total score significantly correlated with the physical component summary score of the SF-12 and with the DHI-P, DHI-E, DHI-F and DHI total scores (p < 0.001). The ABC-S was significantly able to discriminate between participants with and without a history of falls (p < 0.006). CONCLUSIONS: The ABC-S is a valid and reliable instrument, suitable to assess balance confidence in Spanish patients with vestibular disorders. Implications for Rehabilitation The Spanish version of the ABC scale is a valid and reliable measure of balance confidence in patients with vestibular disorders. In persons with vestibular disorders, the Spanish version of the ABC scale has shown the ability to discriminate between patients with and without a history of falls in the last year.

Influencia del desplazamiento activo sobre la felicidad, el bienestar, la angustia psicológica y la imagen corporal en adolescentes / Influence of active commuting on happiness, well-being, psychological distress and body shape in adolescents

Objetivo: Analizar la asociación entre el desplazamiento activo y los indicadores de salud psicológica en una muestra de 1012 adolescentes. Método: El desplazamiento activo se evaluó mediante cuestionario. La felicidad con la Subjective Happiness Scale, el bienestar y la angustia psicológica con el General Well-Being, y la imagen corporal con la versión breve del Body Shape Questionnaire. Resultados: Los/las adolescentes que emplean más de 15 minutos al día en desplazamiento activo tenían niveles más altos de felicidad subjetiva (p=0,032) y bienestar psicológico (p=0,036), así como niveles más bajos de angustia psicológica (p=0,021) que los/las que emplean 15 o menos minutos al día. No se hallaron diferencias significativas en la imagen corporal entre los/las adolescentes menos y más activos/as (p=0,163). Conclusión: Desplazarse de manera activa al instituto, durante más de 15 minutos al día, es una conducta recomendable que se asocia con un mayor nivel de felicidad y bienestar en la adolescencia (AU)

Objective: To analyse the association between active commuting to secondary school and indicators of psychological health in a sample of 1012 adolescents. Method: Active commuting was assessed through a questionnaire, subjective happiness with the Subjective Happiness Scale, well-being and psychological distress with the General Well-Being Scale, and body shape was assessed using the short version of the Body Shape Questionnaire. Results: Adolescents who spent more than 15minutes per day actively commuting to secondary school had higher levels of subjective happiness (p=0.032) and psychological well-being (p=0.021) and lower levels of psychological distress (p=0.021) than adolescents who spent 15minutes or less per day. There were no differences in body shape between less and more active adolescents (p >0.05). Conclusion: Active commuting to secondary school for more of 15minutes per day is recommended because it is associated with higher levels of happiness and well-being in adolescents (AU)

Estilos educativos familiares e indicadores de actividad física en niños y adolescentes / Parental styles and indicators of physical activity in children and adolescents

Se analizaron las relaciones entre el estilo de socialización familiar y diferentes variables relacionadas con la actividad física. Asimismo, se examinó si tales indicadores difieren en función del sexo y nivel educativo. Participaron 749 estudiantes de educación primaria y secundaria (10-16 años). Los resultados revelan que las percepciones asociadas a distintos indicadores de actividad física difieren en función del estilo educativo atribuido. Los escolares de hogares permisivos y democráticos están más motivados, conceden más utilidad a la disciplina de la educación física y afirman recibir más apoyo de sus familiares para la práctica de actividad física que sus iguales de hogares negligentes y autoritarios. Adicionalmente, las valoraciones relativas a orientación motivacional hacia la tarea, condición física percibida, expectativas de ejecución, motivación intrínseca hacia y utilidad de la educación física, autoeficacia percibida y apoyo familiar son más elevadas en el alumnado de primaria. No se observan diferencias según el sexo. Se concluye que el clima más relajado de hogares permisivos y democráticos puede propiciar una predisposición más favorable y valor social a la actividad física

This study analyzed the relationship between parenting style and different variables associated to physical activity. In addition, it was explored whether these variables differed according to gender and educational level. 749 elementary and middle school children (10-16 years old) participated in the study. Children's perceptions related to physical activity were found to differ depending on the type of perceived parenting style. Those children raised in permissive and authoritative homes were found to be more intrinsically motivated towards physical education than children raised in authoritarian and negligent homes. They also found the contents of the course more useful and reported to feel more supported by their parents with regards to physical activity. Moreover, scores in task motivation approach, perceived physical competence, performance expectations, intrinsic motivation and utility of physical education, self-efficacy and parental support were higher in elementary school students than in middle school students. No differences based on gender were found. It can be concluded that a more relaxed atmosphere in permissive and authoritative households may encourage a greater tendency to and deeper social values about physical activity

Estilos educativos paternos y estrés en estudiantes de educación secundaria obligatoria / Parenting styles and stress in students of compulsory secondary education

Este estudio tuvo como objetivo principal examinar las posibles relaciones existentes entre el estilo educativo familiar percibido por un grupo de adolescentes y el nivel de inquietud expresada ante un conjunto de eventos estresantes cotidianos propios de esta etapa evolutiva. Adicionalmente, se exploró si el grado de estrés informado difería en función del sexo. Participaron 495 estudiantes de educación secundaria obligatoria, con edades comprendidas entre los 12 y los 16 años. Los resultados obtenidos revelan que los adolescentes que perciben en sus hogares el desempeño de un estilo educativo permisivo manifiestan menores índices de estrés que los jóvenes pertenecientes a hogares autoritarios. Asimismo, se obtienen diferencias en función del sexo en tan solo una de las categorías de eventos estresantes evaluadas. Los resultados se discuten apelando a un modelo ecológico de desarrollo humano (AU)

The main purpose of this study was to examine any possible existing connection between parenting style, as perceived by a group of teenagers, and the level of concern shown at a group of daily stressors among this stage in development. In addition, it was studied whether the reported level of stress was subjected to change related to gender. 495 students of compulsory secondary education ranging between 12 and 16 participated in the study. The results obtained revealed that those adolescents with parents exhibiting a permissive style showed a lower level of stress compared to those belonging to authoritarian homes. Furthermore, gender-related differences were only found in one of the stressor categories. The results are discussed appealing to an ecological model of human development