Search results for "Sprint"
showing 10 items of 137 documents
Hands On: incorporación de data sprints y digital methods en la docencia de marketing digital
2022
Este artículo recopila la experiencia acumulada durante 9 años en el diseño y ejecución de data sprints en el marco del Máster en Comunicación y Marketing Digital de la Universitat Autònoma de Barcelona. Con más de 90 proyectos distintos a sus espaldas, estas jornadas han sido un punto de encuentro para profesionales, académicos y estudiantes, posibilitando el intercambio de conocimiento y la transferencia de técnicas entre métodos de investigación del ámbito académico con la investigación aplicada al marketing digital. Al mismo tiempo, el formato data sprint facilita el conocimiento práctico y la adquisición de competencias comunicativas, organizativas y el proceso de resolución de problem…
Biešu sulas koncentrāta ietekme uz futbolistu fiziskajām darbaspējām atkārtotas sprinta slodzes laikā
2021
Pēdējās desmitgades laikā nitrātu (NO3-) un to metabolītu labvēlīgā ietekme uz augstas intensitātes intervāla veida slodzi bijusi aprakstīta dažādos uztura pētījumos (Bailey et.al. 2012, Jones et.al. 2018). Darba mērķis bija novērtēt, kā biešu sulas koncentrāts, kas ir bagātīgs NO3- avots, spēj uzlabot sportistu spējas veikt atkārtotus, maksimālas intensitātes sprintus. Pētījumā piedalījās 7 Rīgas futbola skolas audzēknes vecumā no 15 līdz 22 gadiem. Dalībniecēm pētījuma laikā bija divas testēšanas dienas - kontroles variants un eksperimentālais variants, kur pētāmās personas veica maksimālas intensitātes 10 atkārtotu sprintu testu, kurš bija 20 m garš skriešanas intervāls, pēc kura sekoja …
Laser-Induced Fluorescence Imaging of Paper Surfaces
1993
Laser-induced fluorescence imaging has been used to study the microstructure of paper surfaces. Pulses from a XeCl-excimer laser, 10 ns in duration at 308 nm, were used for excitation, and fluorescence was collected at 420 nm. The excitation spot diameter was approximately 20 µm, and the sampling interval 0.15 mm. Within an area of 5*5 mm2, 1023 sampling points were recorded to generate 3D fluorescence maps of paper surfaces. Papers containing fluorescence whitening agents (FWAs) gave the highest average fluorescence signals. Coated papers with no FW As show weaker signals than the base sheet. For some thirty different paper samples, an obvious correlation between the amount of coating and…
Integrative Neuromuscular Training Enhances Physical Fitness in 6- to 14-Year-Old Rugby Players.
2021
ABSTRACT Alonso-Aubin, DA, Picon-Martinez, M, Rebullido, TR, Faigenbaum, AD, Cortell-Tormo, JM, and Chulvi-Medrano, I. Integrative neuromuscular training enhances physical fitness in 6- to 14-year-old rugby players. J Strength Cond Res 35(8): 2263-2271, 2021-The purpose of this study was to assess the effects of an 8-week integrative neuromuscular training (INT) program on physical fitness measures in young rugby players. A sample of 138 male rugby players (age range, 6-14 years) was divided into 5 age-related groups: group 1 (G1) (n = 20; age, 7.05 ± 0.58), group 2 (G2) (n = 27; age, 8.57 ± 0.49), group 3 (G3) (n = 31; age, 11.02 ± 0.56), group 4 (G4) (n = 33; age, 13.12 ± 0.58, and group …
Relationship between heart rate variability and repeated sprint exercise in young soccer players
2014
Aim: The sport of soccer is characterized by neuromuscular performance resulting in short bursts interspersed by brief recovery periods over an extended period of time. Several studies suggest that the cardiac autonomic nervous system (ANS) assessed by heart rate variability (HRV) may provide useful information regarding the functional adaptations to training stimulus. Although HRV has often been associated with aerobic power and cardiovascular fitness, the influence of sympathovagal balance on neuromuscular performance in young athletes is not well assessed. The aim of this study was to assess the influence of the autonomic system on the performance of repeated sprints, involving predomina…
Relationship between Training Load Management and Immunoglobulin A to Avoid Immunosuppression after Soccer Training and Competition: A Theoretical Fr…
2021
Immunoglobulin A (IgA), which is the main effector against upper respiratory tract viruses such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been related to training load management. The aim of this systematic review was to establish the relationship between training load and salivary IgA based on current evidence in order to avoid immunosuppression after exercise and players´ vulnerability to virus contagion. A systematic review of relevant articles was carried out using two electronic databases (PubMed and Web of Science) until 19 May 2021. From a total of 127 studies initially found, 23 were included in the qualitative synthesis. These studies were clustered depen…
A quantitative approach for assessing significant improvements in elite sprint performance: Has IGF-1 entered the arena?
2012
The introduction of doping substances and methods in sports triggers noticeable effects on physical performance in metric sports. Here, we use time series analysis to investigate the recent development in male and female elite sprinting performance. Time series displaying the average of the world's top 20 athletes were analyzed employing polynomial spline functions and moving averages. Outstanding changes in performance over time were statistically analyzed by Welch's t-test and by Cohen's measurements of effect. For validation we exemplarily show that our analysis is capable of indicating the effect of the introduction of in- and out-of-competition doping testing on women's shot put as wel…
Acute Effects of Loaded Half-Squat Jumps on Sprint Running Speed in Track and Field Athletes and Soccer Players
2016
The purpose of the study was to determine the acute responses to a jump squat protocol designed to induce postactivation potentiation on sprint running performance in experienced track and field athletes and soccer players. Twenty-five regional level athletes (12 track and field: ∼17 years; ∼177 cm; ∼73 kg and 13 soccer: ∼18 years; ∼175 cm; ∼72 kg) performed 2 test sessions assessing 40-m sprint running performance in a balanced, crossover design. Dual-beam light timing gates measured 0-20 and 20-40 m sprint times before and after either 9 minutes of sitting (control) or 2 sets of 6 repetition half-squat jump with the load eliciting maximum power (experimental) conditions. Sprint performanc…
On-Ice and Off-Ice Fitness Profiles of Elite and U20 Male Ice Hockey Players of Two Different National Standards
2020
Vigh-Larsen, JF, Haverinen, MT, Panduro, J, Ermidis, G, Andersen, TB, Overgaard, K, Krustrup, P, Parkkari, J, Avela, J, Kyröläinen, H, and Mohr, M. On-ice and off-ice fitness profiles of elite and U20 male ice hockey players of two different national standards. J Strength Cond Res 34(12): 3369-3376, 2020-Differences in body composition and performance were investigated between elite and U20 male ice hockey players of 2 different national standards. One hundred seventy-nine players were recruited from the highest Finnish (n = 82) and Danish (n = 61) national level, as well as from 1 U20 team from Finland (n = 19) and Denmark (n = 17). Body composition and countermovement jump performance (CM…
Influence of competition on performance factors in under-19 soccer players at national league level.
2020
The aim of this study was to analyse and quantify the acute effects of competition on several performance factors in under-19 male soccer players. To this end, 198 national league players (17.56 ± 0.78 years) performed various tests to measure jump capacity, kicking velocity and sprint times immediately pre-match (T1), at half-time (T2) and post-match (T3). Tests included kicking the ball to measure ball velocity (KICK), sprinting for 40 meters, timing the first 30 meters (30mACCEL), the last 10 meters (10mACCEL) and the total distance (40mACCEL), and performing countermovement jumps (CMJ). For subsequent analysis, the sample was divided into 5 playing positions: goalkeepers (n = 24), defen…