Search results for "LET"

Effects of a 10-day high-intensity interval training mesocycle on physical performance in male judo athletes

2020

Judo is an Olympic combat sport where the competition emphasizes several consecutive 20-30 seconds high-intensity efforts interspersed by short recovery periods. High-intensity block training has been found to be an efficient way to develop physical performance, wherein shorter training periods are focused on developing one or two chosen physical abilities. The purpose of this study was to investigate the effects of a 10-day high-intensity interval training period on the performance in male judo athletes. The study included pre and post-tests as well as a 10-day training intervention. The subjects were 19-28 years old men who had competed at least at the Nordic level during the last year (n…

Effects of aging and training on sprint performance, muscle structure and contractile function in athletes

2009

Cross-sectional studies were conducted to examine sprint running, anaerobic energy production and muscle properties in male sprinters aged 17-88 years. In addition, a 20-week training intervention was carried out to determine whether older runners can further improve their neuromuscular and performance characteristics by a greater emphasis on strength training. With age, sprint performance declined gradually (5-6%/decade). The slowing of maximum speed was characterized by a reduction in stride length and an increase in contact time along with lower ground reaction forces (GRF) and smaller leg and vertical stiffness during the contact phase. Stride frequency showed small decline while swing …

Is Cardiorespiratory Optimal Point Measured During the Maximal Cardiopulmonary Exercise Test a Relevant Indicator of Sports Performance?

2018

Monitoring Training and Recovery during a Period of Increased Intensity or Volume in Recreational Endurance Athletes

2021

The purpose of the study was to examine the effects of progressively increased training intensity or volume on the nocturnal heart rate (HR) and heart rate variability (HRV), countermovement jump, perceived recovery, and heart rate-running speed index (HR-RS index). Another aim was to analyze how observed patterns during the training period in these monitoring variables were associated with the changes in endurance performance. Thirty recreationally trained participants performed a 10-week control period of regular training and a 10-week training period of either increased training intensity (INT, n = 13) or volume (VOL, n = 17). Changes in endurance performance were assessed by an incremen…

Tarvitaanko adaptoituvia tietorakenteita

2011

Tutkielma käsittelee eri tietorakenteiden suorituskykyä. Tietorakenteita vertaillaan algoritmianalyysin ja suorituskyvyn mittaamisen avulla. Tutkimustulosten avulla tutkielmassa esitellään ehdotus adaptoituvasta tietorakenteesta, joka pyrkii yhdistämään kahden hyvin suoriutuneen luokan ominaisuuksia.

Copper-hydride nanoclusters with enhanced stability by N-heterocyclic carbenes

2021

AbstractCopper-hydrides have been intensively studied for a long time due to their utilization in a variety of technologically important chemical transformations. Nevertheless, poor stability of the species severely hinders its isolation, storage and operation, which is worse for nano-sized ones. We report here an unprecedented strategy to access to ultrastable copper-hydride nanoclusters (NCs), namely, using bidentate N-heterocyclic carbenes as stabilizing ligands in addition to thiolates. In this work, a simple synthetic protocol was developed to synthesize the first large copper-hydride nanoclusters (NCs) stabilized by N-heterocyclic carbenes (NHCs). The NC, with the formula of Cu31(RS)2…

LA SFIDA DI MISTRETTA PER UNA RINASCITA CULTURALE ATTRAVERSO LA VALORIZZAZIONE DEL SUO PATRIMONIO STORICO-ARTISTICO

2012

una breve rassegna di suppellettili liturgiche restaurate appartenenti alla Chiesa Madre di Santa Lucia di Mistretta.

An Integrated Approach to Skeletal Muscle Health in Aging

2023

A decline in muscle mass and function represents one of the most problematic changes associated with aging, and has dramatic effects on autonomy and quality of life. Several factors contribute to the inexorable process of sarcopenia, such as mitochondrial and autophagy dysfunction, and the lack of regeneration capacity of satellite cells. The physiologic decline in muscle mass and in motoneuron functionality associated with aging is exacerbated by the sedentary lifestyle that accompanies elderly people. Regular physical activity is beneficial to most people, but the elderly need well-designed and carefully administered training programs that improve muscle mass and, consequently, both funct…

Determination of glyphosate and its metabolite aminomethylphosphonic acid in fruit juices using supported-liquid membrane preconcentration method wit…

2005

Abstract The application of supported-liquid membrane (SLM) technique for effective extraction of N -(phosphonomethyl)glycine (glyphosate) and its primary metabolite aminomethylphosphonic acid (AMPA) from juices (orange, grapefruit, apple and blackcurrant) in combination with HPLC-UV detection after derivatization with p -toluenesulphonyl chloride (TsCl) is presented. The influence of various parameters such as the composition of acceptor phase, flow-rate, concentration of analytes, on the performance of extraction procedure, was studied. It was shown that by appropriate manipulation of SLM parameters the level of detection could be significantly improved. The influence of SLM conditions on…

Resonancia nuclear magnética en roturas del ligamento cruzado anterior : sensibilidad y concordancia con hallazgos artroscópicos

2018

To estimate the sensitivity of magnetic resonance imaging (MRI) as a diagnostic test in anterior cruciate ligament (ACL) injuries, as well as its correlation with arthroscopic findings. Methods. Retrospective analysis of 270 patients who underwent ACL reconstruction surgery in our health department between 2007 and 2017. ACL injuries were diagnosed by radiologists specialized in musculoskeletal pathology, while the correlation between radiological and arthroscopic findings was determined through statistical analysis. Results. The sensitivity of the MRI regarding diagnosis of ACL injuries was 88.5%. In addition, the correlation between radiologic and arthroscopic findings was 73.3%. In 71% o…