Search results for "29"

Biplanar ultrasound investigation of in vivo Achilles tendon displacement non-uniformity

2019

The Achilles tendon is a common tendon for the medial and lateral gastrocnemius and soleus muscles. Non‐uniform Achilles tendon regional displacements have been observed in vivo which may result from non‐uniform muscle loading and intratendinous shearing. However, prior observations are limited to the sagittal plane. This study investigated Achilles tendon tissue displacement patterns during isometric plantarflexor contractions in the coronal and sagittal planes. Fourteen subjects (5 female, 9 male, 26 ± 3 year) performed maximal isometric plantarflexor contractions with the knee in full extension and flexed to 110°. An ultrasound transducer positioned over the free Achilles tendon collecte…

Körperliche Aktivität und deren Effekte auf das Burn-out-Syndrom

2020

ZusammenfassungDas vorliegende Review legt dar, dass regelmäßige körperliche Aktivität einen positiven Einfluss auf die Burn-out-Symptomatik hat. Mittels einer systematischen Literaturrecherche wurden die möglichen Effekte untersucht und die Evidenz mithilfe des Standard Index of Convergence (SIC) bewertet. Der SIC lag in den Längsschnittstudien bei SIC (3) = -1, während er in den Interventionsstudien bei SIC (6) = -0,50 lag. Daher ist jeweils von einer moderat star ken Evidenz auszugehen, dass körperliche Aktivität einen positiven gesundheitlichen Effekt auf das Burn-out-Syndrom hat. Aufgrund der Heterogenität der Erhebungstools und der Studienlage ist es notwendig, weitere qualitativ hoch…

IMPACT OF CARTILAGE DAMAGE ON ARTHROGENIC MUSCLE INHIBITION IN PATIENTS WITH MENISCUS INJURIES

2016

Background: Knee traumata are associated with arthrogenic muscle inhibition (AMI). We aimed to identify impact factors on AMI. Methods: A total of 37 patients with meniscus injuries were interviewed and examined for maximum isometric knee extensor force preoperatively. We analyzed AMI as relative maximum isometric force between healthy and injured legs. Regression analyses were computed to evaluate associations between an AMI with muscle-strength reduction [Formula: see text]% and several parameters and between cartilage damage[Formula: see text][Formula: see text][Formula: see text]stadium 3 and several parameters. ROC curves were calculated to investigate effectiveness of age and pain at…

Menstrual dysfunction and body weight dissatisfaction among Finnish young athletes and non-athletes.

2020

To determine the prevalence of menstrual dysfunction (MD; i.e. oligomenorrhea or amenorrhea) and attitudes towards body weight among athletes and non‐athletes, we studied a cohort of athletes and non‐athletes, in adolescence (14–16 years) and subsequently in young adulthood (18–20 years). We further studied the differences between athletes reporting MD and eumenorrheic athletes at both time periods and identified physical and behavioural characteristicsthat might predict MD in young adulthood. Data were collected using questionnaires, accelerometers, and a pre‐participation screening. In adolescence, the athletes reported current primary amenorrhea more often than the non‐athletes (4.7% vs.…

Evaluación funcional de los pacientes con rotura del ligamento cruzado anterior. Estudio analítico transversal

2020

Resumen Objetivo Evaluar, mediante un analisis biomecanico, la alteracion funcional de la marcha y del equilibrio de pacientes con rotura del ligamento cruzado anterior (LCA). Material y metodo Estudio analitico transversal en 64 sujetos, 27 sujetos sanos y 37 pacientes con lesion de LCA. A todos los sujetos se les realizo un analisis biomecanico de la marcha mediante 4 pruebas: 1) prueba cinematica de la marcha, para caracterizar el patron de marcha; 2) prueba de analisis cinetico de la marcha, para analizar las caracteristicas de las fuerzas ejercidas contra el suelo, la duracion de las pisadas, la simetria entre ambas extremidades y la repetitividad del gesto analizado; 3) prueba de la m…

Prótesis total de cadera primaria con par de fricción cerámica sobre cerámica de cuarta generación: resultados clínicos y de supervivencia con un seg…

2019

Resumen Objetivo Evaluar los resultados clinicos y la supervivencia de las protesis de cadera primarias con par ceramica-ceramica ( C -C) de cuarta generacion implantadas en nuestro centro con un seguimiento minimo de 5 anos. Material y metodo Se estudiaron 205 artroplastias primarias de cadera realizadas entre 2008 y 2012. Los resultados clinicos, prequirurgicos y a los 5 anos de seguimiento fueron evaluados mediante el Harris Hip Score (HHS), el Short Form-36 (SF-36), el Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) y la escala analogica visual (EVA). Radiologicamente se estudiaron la posicion de los componentes protesicos, la osteolisis periprotesica, el aflojami…

Modular device used in the surgery of the human tibia

2018

Influence of the metaphysis positioning in a new reverse shoulder prosthesis

2016

Aim of this work is to investigate the behaviour of a new reverse shoulder prosthesis, characterized by a humeral metaphysis with a variable offset, designed to increase the range of movements and to reduce the impingement. In particular, by means of virtual prototypes of the prosthesis, different offset values of the humeral metaphysis have been analysed in order to find the best positioning able to maximize the range of movements of the shoulder joint. The abduction force of the deltoid, at different offset values, has been also estimated. The study has been organized as follows. In the first step, the point clouds of the surfaces of the different components of the prosthesis have been ac…

Ultrasonographic Measurements of the Achilles Tendon in Elderly Athletes and Sedentary Men

1994

Ultrasonography was performed on the Achilles tendon of the dominant limb of 18 male elderly athletes and 11 sedentary men, aged 70 to 80 years. The tendons were examined with a real-time linear array scanner using a 7.5 MHz transducer. Both longitudinal and transverse images were taken. The mean width of the Achilles tendon was significantly larger in the athletes than in the control subjects. The tendon thickness and cross-sectional area did not differ significantly between the groups, but the figures may indicate a tendency for larger cross-sectional area in the athletes. The results suggest tendon hypertrophy following long-term training.

2019

Foam rolling is thought to improve muscular performance and flexibility as well as to alleviate muscle fatigue and soreness. For this reason, foam rolling has become a popular intervention in all kinds of sport settings used to increase the efficiency of training or competition preparation as well as to speed post-exercise recovery. The objective of this meta-analysis was to compare the effects of foam rolling applied before (pre-rolling as a warm-up activity) and after (post-rolling as a recovery strategy) exercise on sprint, jump, and strength performance as well as on flexibility and muscle pain outcomes and to identify whether self-massage with a foam roller or a roller massager is more…