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Results 501 - 550 of 681
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Bunc V - - 2001
BACKGROUND: There is still much uncertainty and debate surrounding the physiological requirements of competitive soccer. The coaching emphasis on skill development, deficiencies in fitness training, conservative training methods lead to difficulty in the scientific study of soccer. METHODS: The physiological profiles of 22 young soccer players (mean age = 8.0+/-0.3 ...
Babić Z - - 2001
BACKGROUND: Local ischemia and mechanical trauma to hollow abdominal organs are quoted as a cause of gastrointestinal (GI) bleeding during and after long distance running. There are no data on athletes from rugby and other contact sports where mechanical trauma of the abdomen is frequent. METHODS: Occult bleeding in the ...
Dabinett J A - - 2001
The purpose of the present study was to develop a hydration strategy for use by female English field hockey players at the 1998 Commonwealth Games in Malaysia. An additional aim was to initiate the process of acclimation. Fifteen elite players, mean age (+/-SEM) 24.1 +/- 1.19 years, height 1.67 +/- ...
Diallo O - - 2001
BACKGROUND: In adult population, stretch-shortening cycle exercise (plyometric exercise) is often used to improve leg muscle power and vertical jump performance. In children, limited information regarding this type of exercise is available. The purpose of this study was to examine the effectiveness of plyometric training and maintenance training on physical ...
Rannou F - - 2001
BACKGROUND: The purpose of this study was to determine the physiological profile of handball players compared to sprinters, endurance trained and untrained subjects. METHODS: Forty-six subjects aged between 19 and 28 years took part in this study: 10 were national handball players (NHB); 7 were international handball players (IHB), 11 ...
Chamari K - - 2001
The aim of this study was to test the hypothesis that venous blood lactate concentrations ([La-]) would vary from the beginning of brief exercise. Maximal vertical jumping was used as a model of brief intense exercise. Eleven healthy male volleyball players, aged [mean (SE)] 18.5 (0.7) years, performed three exercise ...
Matavulj D - - 2001
BACKGROUND: Although the plyometric training has proved its efficiency, it remains generally unknown whether a limited amount of plyometric training could improve movements in subjects who already demonstrate high level of performance. METHODS: Three different training regimens were performed in order to study effects of plyometric training on elite junior ...
Jalleh G - - 2001
OBJECTIVE: To evaluate a Western Australian mouthguard promotion campaign, launched at the start of the 1997/98 junior rugby union and junior basketball seasons, aimed at increasing mouthguard usage at competition and training. METHOD: A quasi-experimental field design was used to assess the impact of the mouthguard campaign on behavioural change. ...
Smekal G - - 2001
PURPOSE: The aim of this investigation was to examine physiological demands of single match play in tennis. METHODS: 20 players performed 10 matches of 50 min. Respiratory gas exchange measures (RGEM) and heart rates (HR) were measured using two portable systems. Lactate concentration was determined after each game. The average ...
Ronsen O - - 2001
This study was designed to examine the relationship between seasonal changes in training and competition load, and changes in leukocyte subsets, stress hormones, and interleukin-6 (IL-6) in response to a standardised bout of endurance exercise. In addition, changes in mood states were monitored. Ten male, international Nordic skiers, age 20-29, ...
Capranica L - - 2001
The aim of this study was to compare match analysis (using video recordings) and the physiological load (heart rate measured every 5 s, blood lactate measured after the warm-up, first half and second half) of six 11-year-old soccer players during official games of eleven-a-side on a regular-sized pitch (100 x ...
Fallon K E - - 2001
OBJECTIVE: To determine the presence or absence of an acute phase response after training for court and field sports. PARTICIPANTS: All members of the Australian women's soccer team (n = 18) and all members of the Australian Institute of Sport netball team (n = 14). METHODS: Twelve acute phase reactants ...
Tremayne P - - 2001
This study examined patterns of physiological activity in elite pistol shooters and compared them with novice shooters. Heart rate and electrodermal activity were recorded for three 150-s epochs. Participants performed part of the Standard Pistol Shooting Protocol, firing five rounds at a target 25 m distant within the first 150 ...
O'Connor T J - - 2001
GAME(Wheels) is an interface between a portable roller system and a computer that enables a wheelchair user to play commercially available computer video games. The subject controls the game play with the propulsion of their wheelchair's wheels on the rollers. The purpose of this study was to investigate whether using ...
Fradkin A J - - 2001
BACKGROUND: Although it is widely recommended that golfers warm up before play or practice to enhance their physical performance and reduce their injury risk, it is not known to what extent they actually undertake such warm up procedures. OBJECTIVE: To collect information about the proportion of golfers who actively warm ...
König D - - 2001
During the past decade, the physical and mental stress in professional tennis has been constantly increasing. The overall intensity in tennis ranges between 60 and 70% of maximum oxygen uptake and the energy requirements are mainly provided by aerobic energy metabolism. Therefore, particularly with respect to the duration of the ...
Ferrauti A - - 2001
The aim of this study was to assess the effect of the recovery duration in intermittent training drills on metabolism and coordination in sport games. Ten nationally ranked male tennis players (age 25.3+/-3.7 years, height 1.83+/-0.8 m, body mass 77.8+/-7.7 kg; mean +/- sx) participated in a passing-shot drill (baseline ...
Reilly T - - 2001
This review focuses on Gaelic football and scientific reports of the characteristics of its players and the demands of the game. Anthropometric characteristics vary according to positional role, but top players display high muscularity and good all-round fitness at the peak of the competitive season. Match analysis indicates that exercise ...
Oberheu D T - - 2001
Thirty randomly selected game bird feeders were sampled at 25-33-day intervals from November 1996 to March 1997 to quantitate ochratoxin A concentrations in supplemental feed. Monthly mean ochratoxin A concentration of grain in feeders was 8.3 +/- 0.8 ppb (n = 167). Ochratoxin A concentrations from individual feeders ranged from ...
Pyne D B - - 2001
PURPOSE: Exercise and training are known to elicit changes in mucosal humoral immunity, but whether these alterations have any impact on competitive performance remains unclear. This investigation examined relationships between salivary immunoglobulin (Ig) concentration, the incidence of respiratory tract illness (RTI), and competitive performance in elite swimmers. METHODS: Forty-one members ...
D'Ottavio S - - 2001
BACKGROUND: The aim of this study as to describe the work-rate profile and cardiovascular stress of Italian high level soccer referees (n = 18). METHODS. EXPERIMENTAL DESIGN: The referees were examined during official games of the 1992-1993 first division Italian championship (serie A). PARTICIPANTS: subjects were all experienced top level ...
Derenne C - - 2001
Throwing velocity is a necessary requirement for success in baseball. All position players, including pitchers, may increase their defensive performance if their throwing velocity is improved. A review of the literature suggests that throwing velocity can be increased by resistance training and/or biomechanical improvement of the throwing motion. This paper ...
Fahlman M M - - 2001
The purpose of this study was to examine the effect of repeated bouts of brief, intermittent, maximal effort exercise on the concentration of secretory IgA (S-IgA) and incidence of upper respiratory tract infection (URTI) in females. Twenty-six non-smoking, active, adult females participated in this study. The exercise intervention consisted of ...
Eijnde B O - - 2001
The effect of acute creatine supplementation on stroke quality was investigated during simulated match play. Well-trained tennis players reported to the test center on two occasions. On each occasion they performed the Leuven Tennis Performance Test (LTPT) and a 70 m shuttle run (SHR). During 5 days prior to each ...
Cometti G - - 2001
Information about the influence of different practice levels on physical characteristics of a large number of soccer players is lacking. Therefore we assessed muscular strength and anaerobic power of elite, subelite and amateur soccer players to clarify what parameters distinguish the top players from the less successful. We tested 95 ...
Leddy J J - - 2000
A 17-yr-old Division I-AA collegiate offensive lineman developed unilateral ptosis shortly after minor head trauma during a scrimmage. The subsequent temporal profile of the ptosis, a history of a similar event lasting a short period of time 2 yr earlier, and the results of his clinical and electrophysiologic examinations established ...
Dirks K T - - 2000
This study empirically examined the relationship between trust, leadership, and team performance with 2 objectives. The 1st objective was to empirically examine an assumption found in several literatures--that a team's trust in its leader has a significant effect on the team's performance. The 2nd objective was to explore a more ...
Drust B - - 2000
The aim of this study was to devise a laboratory-based protocol for a motorized treadmill that was representative of work rates observed during soccer match-play. Selected physiological responses to this soccer-specific intermittent exercise protocol were then compared with steady-rate exercise performed at the same average speed. Seven male university soccer ...
Anderson C R - - 2000
OBJECTIVES: To identify the frequency of violent commercials during the major league baseball playoffs in 1998 and to compare it with the 1996 playoffs. DESIGN AND SETTING: All 4 World Series games televised on the Fox Television Network (Fox), all 6 National League Championship Series (NLCS) televised by Fox, and ...
Reilly T - - 2000
This review is focused on anthropometric and physiological characteristics of soccer players with a view to establishing their roles within talent detection, identification and development programmes. Top-class soccer players have to adapt to the physical demands of the game, which are multifactorial. Players may not need to have an extraordinary ...
Aziz A R AR Sport Medicine & Fitness Division, Singapore Sports Council, Singapore. - - 2000
The purpose of this study was to examine the relationship between maximal oxygen uptake and repeated sprint performance in field hockey and soccer players. a descriptive study on the aerobic-anaerobic performance of intermittent team game players. the study was conducted at the Sports Medicine and Research Centre. forty male national ...
McNair P J - - 2000
OBJECTIVE: To examine the effects of instructions related to joint kinematics, auditory stimuli, and imagery on lowering the vertical ground reaction forces associated with landing from a jump. STUDY DESIGN: Randomised controlled trial. SETTING: A laboratory in an educational institution. SUBJECTS: Eighty asymptomatic subjects (27 men) with a mean age ...
Gabbett T J - - 2000
OBJECTIVES: To investigate the physiological and anthropometric characteristics of amateur rugby league players. METHODS: Thirty five amateur rugby league players (19 forwards and 16 backs) were measured for height, body mass, percentage body fat (sum of four skinfolds), muscular power (vertical jump), speed (10 m and 40 m sprint), and ...
Sözen A B - - 2000
BACKGROUND: The purpose of the study was to compare the echocardiographic parameters of soccer players to healthy controls and to assess the effect of the position of the soccer players on the echocardiographic findings. METHODS: M Mode 2D and Doppler echocardiographic examination were carried out on 83 professional league soccer ...
Skurvydas A - - 2000
Healthy untrained males (age 25.4 +/- 1.7 years, n=12) gave their informed consent to take part in all experiments within the study. After 100 intermittent (every 20 s) drop jumps from the height of 0. 4 m, jumps with counter-movement to 90 degrees angle in the knee and immediate maximal ...
Naunheim R S - - 2000
PURPOSE: To compare accelerational forces to the head in high school-level football, hockey, and soccer athletes. METHODS: Acceleration of impact was measured within the helmet of high school hockey and football players during actual game play. A triaxial accelerometer was placed at the vertex of the helmet immediately adjacent to ...
Jones M V - - 2000
The present study examined the relationship between the emotions experienced by 15 international hockey players, both immediately before and during competition, and their performance levels. Data were collected on the players' emotional states using a revised version of the Feelings Scale of Butler, which was completed retrospectively after the match ...
Stude D E - - 2000
OBJECTIVE: This study was an initial investigation evaluating the effects of orthotic intervention on club-head velocity (CHV) among a group of experienced golfers before and after 9 holes of simulated golf. SETTING: Northwestern College of Chiropractic, Bloomington, Minnesota. PARTICIPANTS: Twelve experienced golfers were included in the study. METHOD: CHV was ...
Mujika I - - 2000
PURPOSE: This investigation examined the effects of creatine (Cr) supplementation on intermittent high-intensity exercise activities specific to competitive soccer. METHODS: On two occasions 7 d apart, 17 highly trained male soccer players performed a counter-movement jump test (CMJT), a repeated sprint test (RST) consisting of six maximal 15-m runs with ...
O'Connor T J - - 2000
The sedentary lifestyle of many people with spinal cord injury (SCI) has lead to cardiovascular diseases being a major health concern. A suitable exercise program may help improve the SCI individual's cardiovascular fitness level. GAMEWheels is an interface between a custom wheelchair roller system and a computer that enables an ...
Junge A - - 2000
It is hypothesized that players of different levels of play might differ not only in their football skills but also in their way of playing football and with respect to psychological factors such as concentration, reaction time, or competitive anxiety. The psychological characteristics of a player might influence his way ...
Filaire E - - 2000
The aim of the investigation was to evaluate in fourteen elite female handball players the resting values of saliva levels of testosterone -- T -- and dehydroepiandrosterone -- DHEA -- in comparison with ten sedentary women and the response to exercise of the same hormones in handball players. Saliva samples ...
Ziemba A W - - 1999
This study was designed to determine the effect of ginseng treatment on multiple choice reaction time (RT) during exercise. Fifteen soccer players (age 19.07 +/- 0.62 yrs) were placed in a double-blind manner into one of two groups: ginseng (n = 7), receiving 350 mg of ginseng daily for 6 ...
Chatard J C - - 1999
A synchronized swimming team routine (TR) is composed of figures of varying degrees of difficulty. Swimmers able to perform these figures separately underwent a 5-week technical training programme (TTP) to assemble a TR. Little is known about the physiological responses to this kind of TTP. A group of 13 trained ...
Hoffman J R JR Aeromedical Center, Israel Air Force, - - 1999
The purpose of this study was to examine the relationship between the Profile of Mood States (POMS) and performance in a professional basketball team. seven male professional basketball players playing for the defending champions of the Israel Basketball League participated in this study. the POMS was administered seven times (T1-T7) ...
Walsh N P - - 1999
The aim of this study was to assess the effect of an acute bout of high-intensity intermittent exercise on saliva IgA concentration and alpha-amylase activity, since this type of training is commonly incorporated into the training programmes of endurance athletes and games players. Eight well-trained male games players took part ...
Collet C - - 1999
Simple reaction time (RT) is defined as the time duration following the initiation of a stimulus and the resultant first observable response. For sprinters, RT to a start should be especially important, as this may determine the outcome of the race. The aim of this study was to investigate whether ...
Newton R U - - 1999
PURPOSE: The purpose of this study was to determine whether ballistic resistance training would increase the vertical jump (VJ) performance of already highly trained jump athletes. METHODS: Sixteen male volleyball players from a NCAA Division I team participated in the study. A Vertec was used to measure standing vertical jump ...
Gleeson M - - 1999
The effects of exercise on the immune system has been shown to be dependent on the level of fitness of the subjects, the degree of intensity, and the duration of the exercise. A reduction in salivary IgA levels occurs after individual sessions of exercise. PURPOSE: The purpose of this study ...
Ito Y - - 1999
Kynurenine pathway of tryptophan makes a lot of physiological active substances, such as quinolinate, NAD and so on, suggesting that kynurenine itself may play a very important role physiologically. Therefore, we examined the influence of exercise on serum kynurenine concentration. At first, we assayed kynurenine concentration of students (n = ...
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