Search results for "Sports"
showing 10 items of 4839 documents
Ieskats akadēmiskās paukošanās nodarbībā
2021
Video uzņemts 2021. gada decembra mēneša priekšmeta "Akadēmiskās paukošanās inventārs" ietvaros, lai iepazīstinātu interesentus, kā strādā akadēmiskā paukošanās praksē. Latviešu studentu korporācija Latvia sniedza atbalstu LU Muzejam video uzņemšanā, piesaistot aktīvākos un labākos paukotājus.
Asthma, allergies and respiratory symptoms in different activity groups of swimmers exercising in swimming halls
2021
Abstract Background Respiratory symptoms are common in competitive swimmers. However, among these and in swimmers at other activity levels the swimming distance, the total spent time in swimming halls and their medical background varies. Our objectives were, first, to assess their medical histories and the associations with respiratory symptoms among swimmers in different activity groups and then second, to study the pulmonary function findings and related medications in competitive swimmers who exercise in swimming hall environments the most. Methods First, 1118 participants consisting of 133 competitive-, 734 fitness- and 251 occasional swimmers answered questionnaires concerning their me…
Predicción de la lealtad de los usuarios de centros deportivos privados. Variables de gestión y bienestar subjetivo (Prediction of the loyalty of cos…
2019
Una de las finalidades más importantes en el contexto de los servicios deportivos es conocer cuáles son las intenciones futuras del usuario, por ello tratar de analizar la lealtad del usuario, se ha convertido en una de los objetivos principales dentro de la gestión del deporte, en concreto, los centros deportivos. Por ello, el objetivo es conocer que influencia tienen las demás variables de gestión y el bienestar subjetivo sobre esta dimensión que mide las intenciones futuras del usuario, como es la lealtad. La muestra de este trabajo estaba formada por 303 usuarios de la instalación deportiva (164 hombres, 139 mujeres). Para el análisis estadístico se utilizó con el programa SPSS v.23. To…
O-45 The influence of training program on the functionality of respiratory system
2016
For each individual must be appropriate life style modelling of the respiratory system functionality as well necessity for physical activity, training program, especially for amateur and professional athletes. The influence of variable factors gives implications to the amateur athletes’ body and respiratory system- health condition, supplements or necessary treatment, physical working capacity of the body, physical activity with increased function of respiratory system, cardiopulmonary interdependence, hydration, fitness level, physical abilities, training or competition period, training process and ambience. High level functionality of respiratory system decreases risk of potential interac…
ANALGESIC EFFECT OF EXTRACORPOREAL SHOCK-WAVE THERAPY ON CHRONIC TENNIS ELBOW
1996
We report a controlled, prospective study to investigate the effect of treatment by low-energy extracorporeal shock waves on pain in tennis elbow. We assigned at random 100 patients who had had symptoms for more than 12 months to two groups to receive low-energy shock-wave therapy. Group I received a total of 3000 impulses of 0.08 mJ/mm2 and group II, the control group, 30 impulses. The patients were reviewed after 3, 6 and 24 weeks. There was significant alleviation of pain and improvement of function after treatment in group I in which there was a good or excellent outcome in 48% and an acceptable result in 42% at the final review, compared with 6% and 24%, respectively, in group II.
Characteristics of the early flight phase in the Olympic ski jumping competition.
2004
Early flight phase (approximately 40 m) of the athletes participating in the final round of the individual large hill ski jumping competition in Salt Lake City Olympics was filmed with two high-speed pan & tilt video cameras. The results showed that jumpers' steady flight position was almost completed within 0.5s. The most significant correlation with the length of the jump was found in the angle between the skis and body (r=.714, p.001 at 1.1s after the take-off). This particular phase seemed to be important because the ski angle of attack was also related to the jumping distance at the same phase. Although the more upright ski position relative to flight path resulted in longer jumping di…
Collagens in the injured porcine intervertebral disc
1994
Spinal pain often is thought to be due to degeneration and mechanical failure of the intervertebral disc. Since the mechanical strength of the tissue depends on collagen fibers, the present study was designed to investigate the reactions in collagen metabolism after an experimentally induced disc injury. Five domestic pigs underwent an incision in the anterior part of the annulus fibrosus of disc L4-L5 through a retroperitoneal approach. The animals were killed 3 months postoperatively, and the injured discs and intact discs (controls) from different animals were removed for chemical analysis. Slices were cut from seven different parts across the disc. The concentration of total collagen (h…
How preconditioning and pretensioning of grafts used in ACLigaments surgical reconstruction are influenced by their mechanical time-dependent charact…
2021
Abstract Purpose Consensus about a pre-implant preparation protocol adaptable to any graft used in Anterior Cruciate Ligament reconstruction is still lacking. In fact, there is not agreement on reliable metrics that consider both specific graft dimensional characteristics, such as its diameter, and the inherent properties of its constitutive material, i.e. ligaments or tendons. Aim of the present study was to investigate and propose the applied engineering stress as a possible metrics. Methods Preconditioning and pretensioning protocol involved groups of grafts with different section (10 or 32 mm2) and materials (i.e. human patellar and hamstring tendons, and synthetic grafts). A 140 N load…
Skinfold Sum: Reference Values for Top Athletes
2012
Las determinaciones de los pliegues subcutaneos de diferentes zonas corporales son utilizadas ocasionalmente en ecuaciones predictivas para calcular la masa grasa. Este es un parametro critico que condiciona el optimo rendimiento deportivo. No existen valores de referencia de pliegues subcutaneos en atletas de elite. Por tanto, el principal objetivo de este estudio es presentar valores de referencia de pliegues subcutaneos de una amplia poblacion de atletas. Los pliegues tricipital, subescapular, suprailiaco, abdominal, muslo y pierna fueron medidos de acuerdo a la normativa ISAK (Sociedad Internacional para el Avance de la Cineantropometria) en 2500 atletas. La suma de los seis pliegues as…
Difference in hemodynamic and wall stress of ascending thoracic aortic aneurysms with bicuspid and tricuspid aortic valve.
2012
The aortic dissection (AoD) of an ascending thoracic aortic aneurysm (ATAA) initiates when the hemodynamic loads exerted on the aneurysmal wall overcome the adhesive forces holding the elastic layers together. Parallel coupled, two-way fluid–structure interaction (FSI) analyses were performed on patient-specific ATAAs obtained from patients with either bicuspid aortic valve (BAV) or tricuspid aortic valve (TAV) to evaluate hemodynamic predictors and wall stresses imparting aneurysm enlargement and AoD. Results showed a left-handed circumferential flow with slower-moving helical pattern in the aneurysm's center for BAV ATAAs whereas a slight deviation of the blood flow toward the anterolater…