Search Results
Results 351 - 400 of 687
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Banfi G - - 2006
We assessed haematological parameters and possible modifications in elite rugby players throughout a competitive season for increasing the knowledge of physiological characteristics of these sportsmen. Blood samples were collected from the members of the Italian National rugby team at four consecutive training camps during a whole competitive season. Forty-four athletes ...
Impellizzeri F M - - 2006
The aim of this study was to compare the effects of specific (small-sided games) vs. generic (running) aerobic interval training on physical fitness and objective measures of match performance in soccer. Forty junior players were randomly assigned to either generic (n=20) or specific (n=20) interval training consisting of 4 bouts ...
Girard O - - 2006
OBJECTIVES: To examine changes in exercise characteristics, maximal voluntary contraction, and explosive strength during prolonged tennis playing. METHODS: Maximal isometric voluntary contraction (MVC), leg stiffness (hopping), and peak power in squat (SJ) and countermovement (CMJ) jumps were measured before, every 30 minutes during, and 30 minutes after a three hour ...
Ford Kevin R - - 2006
Synthetic playing surfaces with rubber or sand infill are now used on many athletic fields such as soccer, football and rugby. Although these surfaces may come closer to the mechanical characteristics of a true grass playing surface than the older turf designs, their potential effects on lower extremity biomechanics and ...
Guner Rustu - - 2006
The purpose of this study was to examine the running velocities and heart rates at fixed lactate concentrations of young soccer players according to playing position and age. A total of 223 young male soccer players participated in this study. Each player performed incremental exercise tests on a treadmill. Running ...
Grandstrand Sara L - - 2006
The purpose of this study was to examine lower extremity kinematics following implementation of the Sportsmetrics Warm-Up for Injury Prevention and Performance (WIPP) training program. The hypothesis was that there would be no difference in landing mechanics between 2 groups of female youth soccer players (9-11 years of age), with ...
Little Thomas - - 2006
Recent evidence suggests that certain soccer drills produce exercise intensities suitable for physical conditioning. However, it remains debatable whether soccer drills can provide a sufficiently unified exercise intensity among different players and on repetition of a drill, because movement patterns cannot be externally controlled during soccer drills. Good reliability and ...
Deniz Omer - - 2006
BACKGROUND: Wind instrument playing requires a strenuous respiratory activity. Previous studies investigating effect of wind instrument playing on pulmonary function are equivocal. METHODS: In the present study, 34 male, non-smoker wind players in a military band were compared with 44 healthy non-smoker males by pulmonary function testing. RESULTS: All spirometric ...
Fernandez J - - 2006
This review focuses on the characteristics of tennis players during match play and provides a greater insight into the energy demands of tennis. A tennis match often lasts longer than an hour and in some cases more than five hours. During a match there is a combination of periods of ...
Manolopoulos E - - 2006
The aim of this study was to examine the effect of a soccer (strength and technique) training program on kinematics and electromyographic (EMG) muscle activity during a instep kick. Ten amateur soccer players (aged 19.9+/-0.4 years, body mass 74.8+/-9.1 kg, height 177.4+/-6.7 cm) constituted the experimental group (EG) whereas 10 ...
Wang Xuewen - - 2006
OBJECTIVE: To examine the metabolic, physiologic, and hemostatic responses to action video game play in a group of young boys. DESIGN: Comparison study. SETTING: Laboratory of Clinical and Applied Physiology, University of Miami. PARTICIPANTS: Twenty-one boys aged 7 to 10 years. MAIN OUTCOME MEASURES: Blood pressure monitored before and during ...
Stålnacke B-M - - 2006
It is a matter of debate whether or not ordinary heading of the ball in soccer causes injury to brain tissue. To analyse concentrations of the biochemical markers of brain tissue damage S-100B and neurone specific enolase (NSE) in serum of female elite soccer players in association with a competitive ...
Gabbe B J - - 2006
Hamstring injuries are the most common injury sustained by Australian Football players. Eccentric training has been proposed as a potential preventative strategy. This pilot randomised controlled trial (RCT) evaluated the effectiveness of a pre-season eccentric training program for preventing hamstring injuries at the community level of Australian Football. Seven amateur ...
Guo Songfeng - - 2006
Increased physical activity is important for reducing the risk of cardiovascular disease. However, among people with disabilities, inactivity is prevalent. In order to encourage exercise among members of this group, an exercise system combining arm ergometry with video gaming, called the GAME(Cycle) was previously developed. User input was received through ...
Tessitore A - - 2006
AIM: The purposes of the present study were: 1) to evaluate heart rate and technical-tactical differences, if any, during ''6-a-side'' drills, played on 2 pitch dimensions (30x40 m and 50x40 m) and duration (3 min and 8 min); 2) to assess the variability of data between repeated experimental sessions; 3) ...
Cornish S M - - 2006
AIM: Creatine monohydrate supplementation is beneficial for enhancing high-intensity exercise performance, especially activities that involve repeated sprints. Creatine monohydrate supplementation is common in ice-hockey players. The purpose of this study was to determine the effect of creatine monohydrate supplementation on sprint skating performance in Junior B and collegiate ice-hockey players. ...
Stewart Sherry H - - 2006
The authors examined heart-rate responses to alcohol consumption and video lottery terminal (VLT) play. Regular VLT players (30 probable pathological gamblers [PPGs]; 30 nonpathological gamblers [NPGs]) were randomized to an alcohol (mean postdrinking blood alcohol concentration = 0.056%) or placebo condition. Heart rate was recorded at pre- and postdrinking baselines ...
Sari-Sarraf V - - 2006
Current evidence would support a view that intense exercise increases whereas moderate exercise reduces the susceptibility to illness, predominately upper respiratory tract infections. Concentrations of IgA and cortisol in saliva may be used to reflect changes in immune function. The aim of this study was to determine if the type ...
Zameziati K - - 2006
The enhancement of performance in stretch shortening cycle (SSC) exercises has been attributed to the recoil of elastic energy stored during the stretching phase and depends on the duration of the coupling time (T(coupling)) i.e., the duration of the isometric phase occurring between the stretch and the shortening of the ...
Saygin Ozcan - - 2006
BACKGROUND: The objective of this study was to investigate the effect of various sports disciplines on basic elements of the acquired and natural defense systems and to compare their results with that of non-sporting controls. MATERIALS/METHODS: The study included 15 sedentary (Group 1), 15 volleyball players (Group 2) and 15 ...
Little Thomas - - 2006
The purpose of this study was to examine the effects of different modes of stretching within a pre-exercise warm-up on high-speed motor capacities important to soccer performance. Eighteen professional soccer players were tested for countermovement vertical jump, stationary 10-m sprint, flying 20-m sprint, and agility performance after different warm-ups consisting ...
Sophromadze Z - - 2006
Reaching high results in sports is main problem in the field of modern sport. It is based on sportsman's appropriate health condition to meet high intensity and amount of training and competition load. Highly qualified sportsmen wrestlers (30 individuals) and football players (25 individuals) were studied. Age range was 18-25 ...
Burgess Stephen S O - - 2006
The hydraulic limitation hypothesis of Ryan & Yoder (1997, Bioscience 47, 235-242) suggests that water supply to leaves becomes increasingly difficult with increasing tree height. Within the bounds of this hypothesis, we conjectured that the vertical hydrostatic gradient which gravity generates on the water column in tall trees would cause ...
Nagasawa, Seigo
NAGASAWA, S. and UMEMURA, Y., Bone Hypertrophy in Rats: Effects of Jump Number and Height. Abv. Exerc. Sports Physiol., Vol.8, No.4 pp.87-92, 2002. The purpose of this study was to examine the effect of jump number (number of jumps) and height of jump in jump-exercise on bone mass and bone ...
Cross Rod - - 2006
Two case studies are presented involving fatal falls of adult females from a height. One involved a launch at low speed from a balcony, and one involved a launch at high speed from the top of a cliff. Crime scene evidence obtained on the balcony itself provided a strong indication ...
Kerr Rebecca - - 2006
The aims of the study were to determine those variables that significantly affect push-in execution and thereby formulate coaching recommendations specific to the push-in. Two 50 Hz video cameras recorded transverse and longitudinal views of push-in trials performed by eight experienced and nine inexperienced male push-in performers. Video footage was ...
Muramatsu Shigeru - - 2006
The purpose of this study was to comparatively investigate the energy expenditure of jumping on sand and on a firm surface. Eight male university volleyball players were recruited in this study and performed 3 sets of 10 repetitive jumps on sand (the S condition), and also on a force platform ...
Jimison H - - 2006
With the recent consumer interest in computer-based activities designed to improve cognitive performance, there is a growing need for scientific assessment algorithms to validate the potential contributions of cognitive exercises. In this paper, we present a novel methodology for incorporating dynamic cognitive assessment algorithms within computer games designed to enhance ...
Greig Matt P - - 2006
The aim of this study was to quantify response to a soccer-specific intermittent (INT) treadmill protocol based on notational analysis of match-play. Ten male semiprofessional football players (age 24.7 +/- 4.4 yr, body mass 77.1 +/- 8.3 kg, VO2max 63.0 +/- 4.8 ml x kg x min(-1)) completed the 90 ...
Ng Tracy P - - 2006
The purpose of this study was to determine the effect of gender and body size on peak linear head accelerations during daily activities. Head accelerations were measured for 18 volunteers using a biteplate system. Each subject performed seven activities: sitting in a chair, sitting quickly in a chair, walking at ...
Jimison Holly H Oregon Health & Science University, USA. - - 2006
With the recent consumer interest in computer-based activities designed to improve cognitive performance, there is a growing need for scientific assessment algorithms to validate the potential contributions of cognitive exercises. In this paper, we present a novel methodology for incorporating dynamic cognitive assessment algorithms within computer games designed to enhance ...
Spencer M - - 2005
International field hockey tournaments may require teams to play three games within a period of four days. Therefore, there is potential for residual fatigue to affect the movement patterns of players during subsequent games. The purpose of this study was to document changes in time-motion analysis of 14 elite male ...
Moore E Whitney G - - 2005
Olympic-style lifts (OSL) and plyometric exercises (PE) are frequently combined with traditional resistance training (TRT) to improve athletic performance. The goal of this study was to directly compare the performance effect of TRT (30 minutes) combined with either OSL or nondepth-jump PE (15 minutes) on entry level competitive collegiate athletes. ...
Hoffman Jay R - - 2005
The purpose of this study was to explore the effects of 5 weeks of eccentrically loaded and unloaded jump squat training in experienced resistance-trained athletes during the strength/ power phase of a 15-week periodized off-season resistance training program. Forty-seven male college football players were randomly assigned to 1 of 3 ...
McBride Jeffrey M - - 2005
The purpose of this investigation was to determine whether performing high force or explosive force movements prior to sprinting would improve running speed. Fifteen NCAA Division III football players performed a heavy-load squat (HS), loaded countermovement jump (LCMJ), or control (C) warm-up condition in a counterbalanced randomized order over the ...
Eniseler Niyazi - - 2005
The purpose of this investigation was to estimate the physiologic strain on players during various soccer training activities. Ten soccer players from the first division soccer league of Turkey were used as subjects. The heart rate responses were measured during 4 types of soccer training. First, the heart rates that ...
Gabbett Tim J - - 2005
This study investigated the physiological and anthropometric characteristics of junior rugby league players over a competitive season. Forty-five rugby league players were allocated into training (n = 36) and nonexercise control (n = 9) groups. The training group participated in 2 field-training sessions each week with training loads, match loads, ...
Brechue William F - - 2005
The purpose of this study was to determine the effect of football equipment and running surface on sprint performance in NCAA Division II football players (n = 68). Players were timed in the 40-yd sprint on an indoor rubberized track (Day 1) and on an outdoor, natural-grass football field (Day ...
Diduch David R - - 2005
A collegiate football player suffered a direct blow to the distal quadriceps mechanism, resulting in a partial tear of the vastus medialis obliquus. Over time, he began to develop activity-related swelling of his prepatellar bursa. By 6 weeks after his injury, an area of swelling the size of a golf ...
Rahnama Nader - - 2006
Surface electromyography has been useful in comparing muscular activity among different sports movements and it is a valuable technique for evaluating muscle activation, co-ordination and fatigue. Since these important variables have not been investigated during the full game in soccer, the present study aimed to investigate the activity of major ...
Gabbett Tim J - - 2005
The purpose of this paper is to provide a comprehensive review of the science of rugby league football at all levels of competition (i.e. junior, amateur, semi-professional, professional), with special reference to all discipline-specific scientific research performed in rugby league (i.e. physiological, psychological, injury epidemiology, strength and conditioning, performance analysis). ...
Hertogh C - - 2005
In this study, we examined the effects of a prior run-up on intermittent maximal vertical jump performance. Seven regionally ranked male volleyball players volunteered to participate in the study. They performed three randomized tests: (1) six repeated intermittent maximal jumps (jump condition), (2) six repeated intermittent run-ups (run-up condition), and ...
Pucsok J M - - 2005
A heterogeneous group of 10 male and 15 female judo players are utilized in this study. The subjects complete a standardized maximal treadmill exercise test. Urine samples are collected at the pre- and postexercise stages. The urine steroids are measured using a gas chromatography-mass spectrometry instrument. In rest and after ...
Mayhew Jerry L - - 2005
The purpose of this study was to determine the relationship of the backward overhead medicine ball (BOMB) throw to power production in college football players. Forty National Collegiate Athletic Association Division II college football players were studied at the end of an 8-week off-season conditioning program for power output determined ...
Hoffman Jay R - - 2005
Ten intercollegiate football players were tested within 3 days prior to (T1) and the day following the end (T2) of football preseason training camp and during weeks 7 (T3) and 11 (T4) of the competitive season. During each testing session, subjects performed a 30-second Wingate anaerobic power test. Near-infrared continuous ...
Watson Greig - - 2005
Diuretic-induced dehydration impairs prolonged running performance (> 1500 m). Sprinting performance may suffer by similar mechanisms (i.e., altered cardiovascular strain, heat storage, and metabolism) or may improve because of reduced mass to accelerate and carry. PURPOSE: To examine sprint and power performance after diuretic-induced dehydration. METHODS: After six sprint practice ...
Coksevim Bekir - - 2005
In this study, exercise performance was evaluated in 259 healthy adolescents by using some tests. The purpose of the study was to investigate exercise performance and cardiorespiratory capacity in both adolescent boys and girls. The following tests were applied to all children: ball throw with right and left hands, vertical ...
Bower Rob - - 2005
The primary aim of this study was to determine whether variations in rebound speed and accuracy of a tennis ball could be detected during game-simulated conditions when using three rackets strung with three string tensions. Tennis balls were projected from a ball machine towards participants who attempted to stroke the ...
Girard Olivier - - 2005
PURPOSE: The aim of the present study was to investigate the differences in lower-limb activity during the tennis power serve between players of different performance levels. METHODS: Thirty-two participants distributed in three groups (beginner, B; intermediate, I; elite, E) performed countermovement jumps to measure leg power (P(max)) and 15 power ...
Reilly Thomas - - 2005
An ergonomics model of training is described in which the demands of the game and the fitness profiles of soccer players are placed in perspective. The demands of the game may be gauged by monitoring the work rate of players during matches and the concomitant physiological responses. These indices suggest ...
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