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PubMedDate not supplied

Knee injury patterns among men and women in collegiate basketball and soccer. NCAA data and review of literature.

Women's participation in intercollegiate athletics has increased dramatically in recent years. Greater participation has increased awareness of health and medical issues specific to the female athlete. Some reports have noted a higher susceptibility to knee injury, specifically injuries to the anterior cruciate ligament, in female athletes as compared with their male counterparts. We performed a 5-year evaluation of anterior cruciate ligament injuries in collegiate men's and women's soccer and basketball programs using the National College Athletic Association Injury Surveillance System. Results showed significantly higher anterior cruciate ligament injury rates in both female sports compared with the male sports. Noncontact mechanisms were the primary cause of anterior cruciate ligament injury in both female sports. Possible causative factors for this increase in anterior cruciate ligament injuries among women may be extrinsic (body movement, muscular strength, shoe-surface interface, and skill level) or intrinsic (joint laxity, limb alignment, notch dimensions, and ligament size).

Anterior Cruciate Ligament Injuries↗
PubMedDate not supplied

Incidence of injury in Texas girls' high school basketball.

We studied the incidence of injury in girl's varsity basketball to characterize injury demographics in high school athletics. We defined a reportable injury as one that occurred during organized practice or competition, resulted in either missed practice or game time, required physician consultation, or involved the head or face. We prospectively evaluated the athletes on team rosters during the 1993 to 1994 season from 100 randomly selected Class 4A and 5A Texas public high schools that employed full-time certified athletic trainers. The 890 student athletes from 80 schools ranged in age from 14 to 18 years. Four hundred thirty-six injuries were reported for a rate of 0.49 per athlete per season. Injury risk, calculated on the basis of exposure time, was 0.4% per hour per athlete. Although game time accounted for only 12.5% of exposure time, it represented one half of the total injuries. Sprains and strains (56%) were the most common injuries, followed by contusions (15%) and dental injuries (14%). Injuries to the ankle (31%) and knee (19%) were by far the most common. There were 34 severe injuries defined as requiring surgery or hospitalization, for a rate of 0.038 per athlete per season. Knee injuries were by far the most likely to require surgeries, and ACL injuries accounted for 69% of the severe knee injuries.

Absenteeism↗
PubMedDate not supplied

Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players.

Anterior cruciate ligament injuries are occurring at a higher rate in female athletes compared with their male counterparts. Research in the area of anterior cruciate ligament injury has increasingly focused on the role of joint proprioception and muscle activity in promoting knee joint stability. We measured knee joint laxity, joint kinesthesia, lower extremity balance, the amount of time required to generate peak torque of the knee flexor and extensor musculature, and electromyographically assessed muscle activity in 34 healthy, collegiate-level athletes (average age, 19.6 +/- 1.5 years) who played soccer or basketball or both. Independent t-tests were used to determine significant sex differences. Results revealed that women inherently possess significantly greater knee joint laxity values, demonstrate a significantly longer time to detect the knee joint motion moving into extension, possess significantly superior single-legged balance ability, and produce significantly greater electromyographic peak amplitude and area of the lateral hamstring muscle subsequent to landing a jump. The excessive joint laxity of women appears to contribute to diminished joint proprioception, rendering the knee less sensitive to potentially damaging forces and possibly at risk for injury. Unable to rely on ligamentous structures, healthy female athletes appear to have adopted compensatory mechanisms of increased hamstring activity to achieve functional joint stabilization.

Adult↗
PubMed2005

Contributions of selected fundamental factors to wheelchair basketball performance.

PURPOSE: The purpose of this study was to determine the contributions of selected fundamental factors, such as arm length, sitting height, simple vision reaction time (SVRT), choice vision reaction time (CVRT), muscle strength, and range of motion (ROM) at the shoulder, elbow, and wrist joints to wheelchair basketball (WCB) performance as measured by season statistics and coaches' evaluation. METHODS: Thirty-seven Paralympic WCB players from seven countries participated in this study. A computerized reaction time system was used to test the SVRT and CVRT. The ROM and muscle strengths of the shoulder, elbow, and wrist joints were measured using a goniometer and MP DA100B BioPac force measurement system, respectively. Stepwise regression analysis was used to identify the contributions of these fundamental factors and "dimensional variables" (DV) derived from the selected factors fundamental to WCB performance. A DV represented a dimension or category of the factor, for example, the wrist flexion/extension DV represented the ROM of the wrist in flexion and extension, and the WCB performance DV represented average points, rebounds, assists, blocks, and steals per game. RESULTS: The results of this study demonstrated that elbow extension and wrist extension had significant contributions to average points. Sitting height, shoulder internal rotation, and elbow flexion had significant contributions to the average rebounds. Arm length had a significant contribution to average assists, and SVRT had a significant contribution to the average blocks. Wrist flexion/extension ROM DV and wrist flexion/extension strength DV had significant contributions to the WCB performance DV. CONCLUSION: Shoulder internal rotation, elbow extension, and wrist flexion/extension ROM, CVRT, and wrist flexion/extension muscle strength are important to WCB performance and should be addressed in WCB training.

Adult↗
PubMed2006

alpha-tocopherol supplementation reduces the elevated 8-hydroxy-2-deoxyguanosine blood levels induced by training in basketball players.

BACKGROUND: The aim of the present study was to investigate the effect of alpha-tocopherol (alpha-Te) supplementation on DNA oxidative damage induced by heavy training in basketball players. METHODS: Blood was obtained from 10 players before (group A) and after training (group B) and after 1 month on alpha-Te (200 mg/day, orally) supplementation, before (group C) and after training (group D). Total antioxidant status (TAS), muscle enzyme activities and the biomarker of DNA oxidation, 8-hydroxy-2-deoxyguanosine (8-OHdG), were measured using commercial kits. alpha-Te and catecholamine blood levels were determined using HPLC methods. RESULTS: TAS was higher in the groups with alpha-Te (groups C and D). Levels of 8-OHdG and muscle creatine kinase (CK) and lactate dehydrogenase (LDH) were remarkably lower (0.20+/-0.03 ng/mL, 120+/-15 U/L and 430+/-90 U/L, respectively) in the group with alpha-Te (group D) than in group B (0.42+/-0.05 ng/mL, 286+/-12 U/L and 688+/-88 U/L, respectively; p<0.001). 8-OHdG levels were negatively correlated to TAS and positively to CK levels. CONCLUSIONS: alpha-Te supplementation may reduce DNA oxidation induced by training by protecting muscle cell "death" from glutamate entry and/or by elevation of TAS via amelioration of lipid peroxidation.

8-Hydroxy-2'-Deoxyguanosine↗
PubMed2005

Strength and conditioning practices of National Basketball Association strength and conditioning coaches.

This study describes the results of a survey of the practices of National Basketball Association strength and conditioning (NBA S&C) coaches. The response rate was 68.9% (20 of 29). This survey examines (a) background information, (b) physical testing, (c) flexibility development, (d) speed development, (e) plyometrics, (f) strength/power development, (g) unique aspects, and (h) comments from coaches providing additional information. Results indicate, in part, that coaches assess an average of 7.3 parameters of fitness, with body composition testing being the most common. All coaches used a variety of flexibility development strategies. Results reveal that 17 of 20 (85.0%) of NBA S&C coaches follow a periodization model. Nineteen of 20 coaches (95.0%) indicated that their athletes used Olympic-style lifts. All coaches employed plyometric exercises with their athletes. The squat and its variations, as well as the Olympic-style lifts and their variations, were the most frequently used exercises. The survey serves as a review and a source of applied information and new ideas.

Basketball↗
PubMed2003

Effects of continuous and interval running training on serum growth and cortisol hormones in junior male basketball players.

Effects of two different eight-week aerobic training programs consisting of continuous (CR) or extensive interval running (IR) on serum growth (GH) and cortisol hormones in 33 male basketball players aged 15-16 were assessed. The CR group ran 4.8 km and the IR group ran 4 x 1.2 km, using equal work-to-rest ratio, three times per week. Aerobic power scores of all subjects and anaerobic power marks of the training subjects increased (p<0.01). Upon exertion, though serum GH levels increased in both exercise groups (p<0.01) prior to and following training; cortisol levels increased only in the IR group prior to training, and in both exercise groups following training (p<0.05). Following the eight week period, resting cortisol levels rose in the training (p<0.05) and control (p<0.01) groups. To conclude, an 8-week training program consisting of continuous or extensive interval running has been effective on acute GH and cortisol secretion in 15-16 year-old male athletes.

Adolescent↗
PubMed2001

The effects of form training on foul-shooting performance in members of a women's college basketball team.

The effects of instruction and feedback in proper form on foul-shooting performance was evaluated in 3 players of a women's NCAA Division II college basketball team. Players showed an increase in percentage of shots made and in correct form compared to baseline shooting without instruction or feedback. All players reached criterion within seven training sessions. The results suggest that training proper form is an effective strategy for improving foul-shooting performance.

Adult↗
PubMed2006

Discriminative game-related statistics between basketball starters and nonstarters when related to team quality and game outcome.

The aim of the present paper was to examine the differences in game-related statistics between basketball players who are selected for the starting five of the team (starters) and those who are not (nonstarters) when related to game outcome (winning and losing) and team quality (best teams, teams classified for the playoffs; and worst teams, teams who miss playoff classification). Archival data were gathered for all 2002-2003 regular season games from the Portuguese Professional League (N = 156). Discriminant analysis was used to identify the game-related statistics that differentiate between starters and nonstarters and interpreted by the examination of the structure coefficients (SC). When the best teams won the games, results described differences between starters and nonstarters with an emphasis on defensive rebounds (SC = .32), assists (SC = .32) and committed fouls (SC = -.68). When the worst teams won the games, results described differences between starters and nonstarters with an emphasis on 2-point field goals successful (SC = .47) and unsuccessful (SC = .48), defensive rebounds (SC =.39), successful free throws (SC =.32), and committed fouls (SC = -.55). An also important finding was that, in best teams, the nonstarters' performance was worse in the games that the team lost, whereas in worst teams, it was the starters' performance that was worse in the games that the team lost.

Achievement↗
PubMed1991

Age differences in the performance of basketball dribbling by elementary school boys.

Age differences in hand contact time and ball-to-floor distance during the performance of a basketball dribbling task by 30 5- to 6-, 7- to 8-, and 9- to 10-yr.-old boys were studied. Each age group included 10 boys, five with high rhythm audiation skill and five with low rhythm audiation skill, as measured on Gordon's Primary or Intermediate Measures of Music Audiation. Performance during eight bounces was filmed with a 16-mm camera and analyzed with a stop-action projector. Analysis of variance indicated no statistically significant differences. Observed dribbling behaviors are discussed.

Basketball↗
PubMed1991

Immediate effect of weight training as compared to aerobic exercise on free-throw shooting in collegiate basketball players.

This study empirically assessed the effect weight training has on the accuracy of free-throw shots immediately following a weight-training session. On On alternating days of the week for eight weeks, 14 members of a women's varsity intercollegiate basketball team engaged in a weight-training program and an aerobics exercise program. Each day immediately following the conditioning, the players shot two sets of 10 free throws. Analysis indicated no significant difference in free-throw shooting accuracy as a function of weight training when compared to the aerobic exercise, suggesting that the immediate effects of weight training are no more detrimental or beneficial for free-throw shooting than aerobic exercise.

Achievement↗
PubMed1994

Mental imagery, relaxation, and accuracy of basketball foul shooting.

18 female college basketball players were pretested on foul shooting, alternately assigned to relaxation or mental imagery training, and posttested after 4 training sessions over 3 weeks. Analysis of covariance indicated that the predicted improvement of the imagery group did not occur. The relaxation group was marginally superior at posttest.

Adolescent↗
PubMed1995

Magnitude of stress reported by basketball referees.

723 basketball referees responded to a survey that assessed stress related to officiating. Mean reported ratings were between "very little" and "moderate amount"; only 4% reported high stress. Results are consistent with other accounts, suggesting that most sport officials experience low occupational stress.

Age Factors↗
PubMed1998

Motivational climate and intrinsic motivation of young basketball players.

The present study examined the relationship between motivational climate with intrinsic motivation for athletes with high and low perceived competence. It was predicted that for highly competent athletes a motivational climate of high mastery and high performance would be associated with enhanced intrinsic motivation whereas for athletes of low competence perceptions of a motivational climate of high mastery would be associated with higher intrinsic motivation. Analysis for 100 male basketball players showed that there was no significant interaction between perceived competence and perceptions of motivational climate. Scores for perceptions of a task-involving climate were significantly correlated with intrinsic motivation.

Achievement↗
PubMed1998

Psychological skills in basketball: preliminary study for development of a Greek form of the Athletic Coping Skills Inventory-28.

The purpose of this preliminary study was to examine for a sample of 126 basketball players the psychometric properties of a Greek version of the 1995 Athletic Coping Skills Inventory-28 by Smith, Schutz, Smoll, and Ptacek. A confirmatory factor analysis supported the structural validity of the translated inventory. Moreover, six of the seven subscales showed adequate internal consistency. The discriminant validity of the scores on the inventory was supported by examining mean differences between experienced and inexperienced athletes as well as between athletes of different levels of competition. Further steps for the validation of the inventory in Greek are discussed.

Adaptation, Psychological↗
PubMed1999

Field dependence-independence of basketball referees.

This study examined the field dependence-independence of basketball referees. A total of 205 subjects (nonathletes, athletes active in individual or team sports, and referees) completed the Group Embedded Figures Test. Analysis indicated no significant differences among referees due to age, group, or number of years officiating. Statistically significant lower scores were obtained by team-sport players and referees than by nonathletes. Mean scores of team-sport players and referees did not differ significantly.

Adolescent↗
PubMed2001

Self-talk in a basketball-shooting task.

This study examined the effectiveness of two different types of self-talk on the performance of a basketball-shooting task. 60 physical education and sports sciences students were organized into one control and two treatment groups which used self-talk. During the experiment, the control group performed with the general instructions, whereas the self-talk groups used the cue-words "relax" and "fast," respectively, Analysis showed that only the participants of the self-talk group who used the word "relax" improved their performance significantly as compared to the other two groups. It appears that self-talk can positively affect performance if its content is appropriate for the task performed.

Adolescent↗