Search results for " sport"
showing 10 items of 5267 documents
Impact loading history modulates hip fracture load and location : A finite element simulation study of the proximal femur in female athletes
2018
Sideways falls impose high stress on the thin superolateral cortical bone of the femoral neck, the region regarded as a fracture-prone region of the hip. Exercise training is a natural mode of mechanical loading to make bone more robust. Exercise-induced adaptation of cortical bone along the femoral neck has been previously demonstrated. However, it is unknown whether this adaption modulates hip fracture behavior. The purpose of this study was to investigate the influence of specific exercise loading history on fall-induced hip fracture behavior by estimating fracture load and location with proximal femur finite element (FE) models created from magnetic resonance images (MRI) of 111 women w…
The use of accelerometry to evaluate the BMX cycling starting hill. Effect of the Q-Ring™ on the acceleration profile
2020
Accelerometers are becoming popular in sport performance, as they are easy to wear, affordable, and usable in the field. Eccentric chainrings have been commercialised to improve pedalling performance, but little is known about their possible effects in the first pedal strokes (PS) of maximal sprint starts. To analyse the effects of the Q-Ring chainring (Q) on pedalling mechanics and performance in the BMX starting hill, 12 Spanish-National-Team BMX athletes performed 3 maximal sprints comparing Q vs No-Q. Time was measured in the first three meters. Acceleration output was registered with a triaxial 6 g accelerometer (200 Hz) in the first four PS. Discrete time, acceleration and statistical…
2020
A soldier’s occupational physical task requirements are diverse and varied. However, the type of physical training that most effectively improves soldiers’ occupational task requirements has not been studied previously. The purpose of this study was to determine the important strength characteristics for soldiers during a repeated simulated military task course, and the type of training that may be effective to improve these abilities during a specialized military training period. Forty-two (n = 42) soldiers participated in the study. They were divided into three training groups; a soldier task-specific training group (TSG, n = 17), a strength training group (STG, n = 15), and a control gro…
2020
Limited data are available regarding strength and endurance training adaptations to occupational physical performance during deployment. This study assessed acute training-induced changes in neuromuscular (electromyography; EMG) and metabolic (blood lactate, BLa) responses during a high-intensity military simulation test (MST), performed in the beginning (PRE) and at the end (POST) of a six-month crisis-management operation. MST time shortened (145 ± 21 vs. 129 ± 16 s, −10 ± 7%, p < 0.001) during the operation. Normalized muscle activity increased from PRE to POST in the hamstring muscles by 87 ± 146% (116 ± 52 vs. 195 ± 139%EMGMVC, p < 0.001) and in the quadriceps by 54 ± 81% (26 ± 8…
Event Management and Terrorism in a Global Order
2020
Over the recent years, the public spectacle and media events have become fertile grounds for terrorist attacks. Particularly, media events play a leading role enhancing the social cohesion as well as revitalizing the psychological frustrations that happened during the working days. Paradoxically, terrorism needs to maximize its gains while the costs are minimized. The spectacularisation tourism and events offer a double-edge sword. The same attractiveness that makes global cities a safer place to live are employed by the terrorist cells to cause chaos and uncertainty. The chapter theoretically explores the difficult interrelation between terrorism and event management as well as the concept…
2020
Decreases in aerobic fitness during military operations have been observed in several studies. Thus, differences in training adaptations during a 6-month crisis-management operation were compared by using the change in endurance performance as the outcome measure. Sixty-six male soldiers volunteered for the study, consisting of pre–post assessments of blood biomarkers, body composition, physical performance, and the military simulation test (MST) performance. Physical training volume was self-reported. After the follow-up, the data were divided based on individual changes in endurance performance. Endurance performance was improved in the high-responder group (HiR, n = 25) and maintained or…
2018
Physical fitness is crucial to warfighters' performance in the battlefield. Previous studies have shown negative changes in their hormonal and neuromuscular responses induced by military field training (MFT). The purpose of this study was to investigate the changes in hormonal and immunological values and body composition during a prolonged MFT and to find out how warfighters' physical condition influences these changes. Conscripts (n = 49, age 20 ± 1 years, height 179 ± 9 cm, body mass 73.8 ± 7.8 kg, fat 12.6 ± 3.7% and BMI 23 kg/m²) were measured before, during, after MFT, and after a 4-day recovery period. Serum insulin-like growth factor-1 (IGF-1), tumor necrosis factor alpha (TNF-α), i…
L’échographie pulmonaire : une aide au diagnostic et au contrôle de la réponse à la kinésithérapie. À propos d’un cas
2017
Introduction L’echographie pulmonaire pourrait etre un outil interessant pour le kinesitherapeute puisqu’elle pourrait permettre d’ameliorer l’indication et le suivi du traitement par kinesitherapie respiratoire [1] . A notre connaissance, aucune etude n’a evalue l’impact de l’echographie pulmonaire sur le processus de decision clinique du kinesitherapeute. Ce rapport de cas aborde l’interet de l’echographie pulmonaire en kinesitherapie respiratoire chez une patiente avec une consolidation pulmonaire. Materiel, population et methode Ce rapport de cas est ecrit suivant les recommandations de « The CARE guideline » [2] . La patiente etait une femme de 68 ans, non intubee et hospitalisee dans …
Place de l’échographie pulmonaire dans le processus de décision clinique du kinésithérapeute
2017
Resume Les outils d’evaluation habituellement utilises par le kinesitherapeute, tel que la radiographie et l’auscultation, manquent de precision diagnostic. L’echographie pulmonaire presente une excellente precision dans l’evaluation de deficiences interessant le kinesitherapeute : consolidation pulmonaire, syndrome alveolo-interstitiel, epanchement pleural, etc. L’integration de l’echographie pulmonaire dans le processus de decision clinique du kinesitherapeute offre de nouvelles perspectives en ameliorant la precision de l’examen clinique et en guidant le choix du traitement du poumon profond, tel que l’a decrit Postiaux. Elle permet au kinesitherapeute de selectionner la technique de rec…
À propos d’un cas de pneumopathie, l’échographie pulmonaire comme aide au diagnostic et au contrôle de la réponse à la kinésithérapie
2017
Resume Ce rapport de cas aborde l’interet de l’echographie pulmonaire en kinesitherapie respiratoire chez une patiente presentant une pneumopathie. L’utilisation de l’echographie pulmonaire dans le processus de decision clinique pourrait aider le kinesitherapeute a choisir avec plus de precision la strategie therapeutique. De plus, elle permet d’evaluer le traitement en temps reel et de controler la reponse du patient. Niveau de preuve 5.