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PubMed1990

Assessing the institutional choice process of student-athletes.

The primary purpose of this investigation was to determine the relative importance of the attributes that student-athletes use when determining their choice of a university. A second purpose was to compare previous athletic institutional choice studies with the results of this study to determine if the most important attributes were similar and to compare and contrast methodologies. Six hundred five Division I student-athletes (344 baseball players and 261 softball players) from all eight national geographic regions of the NCAA participated in this study. The experimental procedure was based on Information Integration Theory and a 2(10) fractional factorial design that resulted in 32 "choice sets." These choice sets were composed of universities described by 10 attributes. This framework required that the student-athletes choose from among three university profiles, thereby realistically simulating the decision process. The results for the aggregate sample show that the "Amount of Scholarship" attribute was the most important factor in the institutional choice process. Many demographic variables were analyzed (sex, race, amount of scholarship received as a freshman, amount of perceived financial need, self-reported grade-point average, questionnaire completion procedures, in-state/out-of-state status, NCAA region, and rank in high school) in conjunction with the choice set data in a post-hoc framework. The results for a subset of these variables are reported in this paper; differences (in the order of importance of the attributes) were found among groups. A primary finding of this study is that a student-athlete's perceived financial need has a critical impact on the institutional choice process.(ABSTRACT TRUNCATED AT 250 WORDS)

Choice Behavior↗
PubMed1994

A model of stress and burnout in collegiate coaches: effects of gender and time of season.

This investigation examined a model of stress and burnout in male (n = 131) and female (n = 118) collegiate head baseball and softball coaches. The model hypothesized that personal/situational variables of coaching issues, social support, hardiness, gender, and win/loss record predict stress appraisal which, in turn, predicts burnout. A preliminary gender by time of season repeated measures analysis indicated significant main effects for gender and time. Path analyses were conducted to test the model separately for males and females at the end of the season only. Results partially supported the model: Both male and female coaches higher in coaching issues and lower in hardiness were higher in perceived stress, and males lower in social support satisfaction were higher in perceived stress. Both male and female coaches' stress appraisal was predictive of all burnout components. The coaches were classified as suffering from moderate to high levels of emotional exhaustion and low to moderate levels of depersonalization and personal accomplishment.

Burnout, Professional↗
PubMed2003

Gender typing of sports: an investigation of Metheny's classification.

The purpose of this study was to investigate if children perceived certain sports to be masculine, feminine, or neutral. Students attending a University Laboratory school (grades K-12) were asked to fill out a survey about sports during a class period, Children in grades K-6 were given a sport (such as baseball) and asked if a boy named David would play it, if a girl named Jane would play it, or if both David and Jane would play the sport. Students in grades 7-12 were asked to name their favorite athlete or team and sport and indicate what sports they felt was best for a girl and a boy. Then they were given a list of sports and asked to indicate, using a 5-point Likert-type scale, whether they believed the sport was masculine, neutral, or feminine. Results from loglinear analyses indicated that students sex-typed certain sports, such as aerobics and football. Additionally, although some responses from students in grades 7-12 indicated that individuals should be able to play any sport they wanted, there were many gendered rsponses in terms of what sport(s) girls and boys should participate in. The results are discussed with reference to Metheny's categories of permissible sports for girls and in the framework of the gender typing of sport.

Adolescent↗
PubMed2004

Physical activities and sedentary pursuits in African American and Caucasian girls.

The purposes of this study were to describe and compare the specific physical activity choices and sedentary pursuits of African American and Caucasian American girls. Participants were 1,124 African American and 1,068 Caucasian American eighth-grade students from 31 middle schools. The 3-Day Physical Activity Recall (3DPAR) was used to measure participation in physical activities and sedentary pursuits. The most frequently reported physical activities were walking, basketball, jogging or running, bicycling, and social dancing. Differences between groups were found in 11 physical activities and 3 sedentary pursuits. Participation rates were higher in African American girls (p < or = .001) for social dancing, basketball, watching television, and church attendance but lower in calisthenics, ballet and other dance, jogging or running, rollerblading, soccer, softball or baseball, using an exercise machine, swimming, and homework. Cultural differences of groups should be considered when planning interventions to promote physical activity.

Adolescent↗
PubMed1988

An examination of the life stress-injury relationship among noncontact sport participants.

This study was designed to determine if life stress is predictive of athletic injury among male and female participants in intercollegiate noncontact sports. The Athletic Life Experiences Survey (ALES) was administered to 86 athletes from the sports of baseball, softball, tennis, and track before the start of the season. After the administration of the ALES, injury frequency and severity were recorded for all practices and contests. The results indicated that total life change (TLC) and negative life change (NLC) were significant (p less than .05) predictors of athletic injury frequency. When partitioned by sex and sport, females and track athletes showed significant (p less than .05) predictive relationships, with TLC the significant predictor for females and object loss (OL) for track athletes. No significant predictive models were found for severity of injury. These results suggest that life stress is predictive of the frequency of injury among noncontact sport participants, particularly for track and female athletes.

Athletic Injuries↗
PubMed2004

The influence of linguistic labels on source-monitoring decisions.

Three studies explored the extent to which people use various object features, including linguistic label, shape, and category membership, to make decisions about the source of their memories. To isolate the influence of each feature, we used items that were related in the following four ways: as synonyms, as similar in shape and category membership, as homographs, or as unrelated. Participants read sentences and either saw or imagined a picture of the critical word's referent. Experiment 1 showed that participants committed more source errors for synonyms (e.g., rabbit and bunny) than for objects that were conceptually and perceptually similar (e.g., doughnut and bagel), which produced more errors than unrelated items. However, there was no effect of label, as people did not have more errors for homographs (e.g., baseball bat and flying bat) than unrelated items. In Experiment 2, presenting the critical word at study was not sufficient to lead people to use an item's label to make source decisions. However, Experiment 3 showed more source errors for homographs than unrelated pairs when semantic context was minimised at study, suggesting that people can use linguistic labels to make source decisions when other information is unavailable.

Analysis of Variance↗
PubMed2003

The effect of a flexed elbow on bowling speed in cricket.

The laws of bowling in cricket state 'a ball is fairly delivered in respect of the arm if, once the bowler's arm has reached the level of the shoulder in the delivery swing, the elbow joint is not straightened partially or completely from that point until the ball has left the hand'. Recently two prominent bowlers, under suspicion for transgressing this law, suggested that they are not 'throwing' but due to an elbow deformity are forced to bowl with a bent bowling arm. This study examined whether such bowlers can produce an additional contribution to wrist/ball release speed by internal rotation of the upper arm. The kinematics of a bowling arm were calculated using a simple two-link model (upper arm and forearm). Using reported internal rotation speeds of the upper arm from baseball and waterpolo, and bowling arm kinematics from cricket, the change in wrist speed was calculated as a function of effective arm length, and wrist distance from the internal rotation axis. A significant increase in wrist speed was noted. This suggests that bowlers who can maintain a fixed elbow flexion during delivery can produce distinctly greater wrist/ball speeds by using upper arm internal rotation.

Biomechanical Phenomena↗
PubMed2006

Sungear: interactive visualization and functional analysis of genomic datasets.

UNLABELLED: Sungear is a software system that supports a rapid, visually interactive and biologist-driven comparison of large datasets. The datasets can come from microarray experiments (e.g. genes induced in each experiment), from comparative genomics (e.g. genes present in each genome) or even from non-biological applications (e.g. demographics or baseball statistics). Sungear represents multiple datasets as vertices in a polygon. Each possible intersection among the sets is represented as a circle inside the polygon. The position of the circle is determined by the position of the vertices represented in the intersection and the area of the circle is determined by the number of elements in the intersection. Sungear shows which Gene Ontology terms are over-represented in a subset of circles or anchors. The intuitive Sungear interface has enabled biologists to determine quickly which dataset or groups of datasets play a role in a biological function of interest. AVAILABILITY: A live online version of Sungear can be found at http://virtualplant-prod.bio.nyu.edu/cgi-bin/sungear/index.cgi

Algorithms↗
PubMed2005

Brief report: a qualitative study of gender preferences and motivational factors for physical activity in underserved adolescents.

OBJECTIVE: This study used focus groups to identify preferences for physical activity (PA) and motivational themes for increasing PA in underserved adolescents. METHODS: Fifty-one adolescents, on the free lunch program (25 males and 26 females; ages 10-13 years; 72% African-American, 19% white, and 9% other minorities) participated in focus groups (6-10 children per group; same gender). The data were transcribed and coded into themes. A content analysis was performed using QSR NVivo. RESULTS: Boys rated their favorite activities as playing basketball, football, soccer, and baseball. Girls rated their favorite activities as playing basketball, swimming, and roller-skating. For motivational themes, boys and girls most frequently stated that they would participate in PA if it was a fun, provided a health benefit, and if there were a variety of choices offered. Being involved with friends was also identified as important to both boys and girls. CONCLUSIONS: The findings from this qualitative study suggest that including components of choice and a variety of physical activities may be important elements for intervention programs in underserved adolescents.

Adolescent↗
PubMed1996

Elevation of eyeglasses from the nasal bridge--a simple solution.

Wearing eyeglasses following nose surgery is a problem faced by many patients who require glasses for clear vision. The solutions offered for this seemingly minor problem are unsatisfactory and usually mandate special spectacle frames. We developed a simple apparatus, using a baseball cap and a tie clip, that enables suspension of eyeglasses with no pressure on the nasal bridge. This solution utilizes readily available components and maintains clear vision with possible frequent readjustment of the glasses. It also avoids contact of the glasses with any part of the face, namely the operative site, dressing, and wound discharge. We find this technique a simple and useful solution for a disturbing problem in plastic surgery.

Aged↗
PubMed2003

Magnetic resonance imaging of sports injuries of the elbow.

Many abnormalities seen in the elbow result from trauma, often from sports such as baseball and tennis. Elbow problems are frequently related to the medial tension-lateral compression phenomenon, where repeated valgus stress produces flexor-pronator strain, ulnar collateral ligament sprain, ulnar traction spurring, and ulnar neuropathy. Lateral compression causes osteochondral lesions of the capitellum and radial head, degenerative arthritis, and loose bodies. Other elbow abnormalities seen on magnetic resonance imaging include radial collateral ligament injuries, biceps and triceps tendon injuries, other nerve entrapment syndromes, loose bodies, osseous and soft-tissue trauma, arthritis, and masses, including bursae.

Athletic Injuries↗
PubMed1985

Update on enucleation and evisceration surgery.

The best operative results with fewest complications after enucleation surgery can be achieved by following basic principles, some of which are those of conservative tissue excision, using spherical implants placed behind Tenon's capsule into the muscle cone and avoiding surgical techniques that overlap the extraocular muscles (especially the superior rectus) over the front of the implant. The presence of an intraocular tumor demands that an enucleation be done. When the possible development of sympathetic ophthalmia is not present, the surgeon should consider doing an evisceration because of the cosmetic and motility advantages. Mention is made of some developments in enucleation surgery, such as the scleral cap reinforcement, the "baseball" implant technique using donor sclera, the use of liquid nitrogen to freeze intraocular tumors before removal of the eye, the dermis-fat orbital graft, and the use of two spherical orbital implants instead of one.

Eye Enucleation↗
PubMed1975

Treatment of recurrent anterior dislocation and subluxation of the glenohumeral joint in athletes.

This series of 93 Putti-Platt arthroplasties performed on 88 athletes without a recurrence and with the return of each athlete to full participation demonstrates the excellence of this procedure. The 5 year average follow-up further confirms this. Only one valid objection was found. This procedure performed on the dominant shoulder definitely restricts the athlete in throwing a baseball or passing a football, and is not advocated where either of these two functions must be preserved. From this series it was found that operative limitation of external rotation to about

Arthroplasty↗
PubMed1996

Applications of electromyography in the throwing shoulder.

In the complex movement that makes up the baseball pitch, shoulder motion is a single link in an orderly chain of events. It can be argued, though, that herein lies the weakest link and by far the most commonly affected cog in the spectrum of overuse injuries in pitchers. Just why the shoulder receives the brunt of the stress has been the subject of numerous studies in the past several years. The tools of choice in many of these articles have been electromyography and high speed photography which have enabled researchers to study dynamically the phases of the pitch and the sequential firing of the muscles involved. With this information and the knowledge gained from studies looking at muscle activity during specific exercises, the clinician should be able to tailor a rehabilitation program that meets the needs of his or her patient. What has been learned from these articles as applied to the biomechanics of the pitch and the rehabilitation of the athlete who throws and the limitations of this form of study need to be clarified.

Biomechanical Phenomena↗
PubMed1998

Posteroinferior acromioclavicular dislocation with supraspinatus tear. A case report.

A 20-year-old man was treated for posteroinferior acromioclavicular dislocation. The diagnosis was based on standard radiographs and intraoperative findings. The distal end of the clavicle had impaled the supraspinatus muscle. Open reduction was performed 2 weeks after injury, followed by wire fixation of the acromioclavicular joint and repair of the torn superior acromioclavicular ligament and coracoclavicular ligaments. Two years after the procedure, standard radiographs revealed normal anatomic alignment of the acromioclavicular joint, with pain free range of motion. Active elevation in the scapular plane was 180 degrees, active external rotation was 80 degrees in the anatomic position, and passive internal rotation was to the T5 vertebra. The patient returned to playing baseball and tennis and was satisfied with the postoperative result.

Acromioclavicular Joint↗
PubMed2001

Effects of physical training of the dominant arm on ipsilateral radial artery distensibility and structure.

BACKGROUND: Exercise training induces cardiovascular changes that are both generalized and restricted to the microcirculation of the tissues more actively involved in the exercise itself. Whether the local effect of exercise extends to larger arteries is unknown, however. METHODS: In the right and left upper limb of 17 right-handed subjects performing an asymmetric training of the upper limbs (hammer throwers and baseball players) and 16 age-matched sedentary controls, we continuously measured radial artery diameter, distensibility and wall thickness by an echotracking and a beat-to-beat finger blood pressure device. Arterial distensibility was calculated by the arctangent model of Langewouters and expressed as continuous values from diastolic to systolic blood pressure. Measurements were made: (1) in baseline conditions; (2) after release from prolonged proximal ischaemia; and (3) after an increase in radial artery blood flow caused by a short (4 min) distal ischaemia to determine the endothelial involvement in the training-induced change in arterial distensibility. RESULTS: In athletes the radial artery distensibility was markedly greater in the right than in the left arm, the latter showing values slightly greater than those seen in the two arms of sedentary subjects. In both arms and groups radial artery distensibility increased markedly after prolonged ischaemia, the between arm and group differences being preserved, however. The radial artery response to distal short ischaemia was, on the other hand, similar in the two arms of the athletes, although greater in these subjects than in the sedentary ones. Radial artery wall thickness was greater in the trained than in the untrained arm of athletes, both values being greater than in sedentary subjects. CONCLUSIONS: Asymmetrical training of the upper limbs is accompanied by a greater distensibility of the middle-sized arteries of the more trained side. This is not associated with asymmetrical changes in endothelial structure or function. It is associated with a greater wall thickness in the trained side, suggesting that, at least in part, a training-induced asymmetrical change in wall structure (possibly with a predominance of more distensible tissues such as elastine and smooth muscle) is responsible.

Adolescent↗
PubMed2003

Achilles tendon rupture associated with injury of the calcaneofibular ligament.

A 49-year-old man collided against an infielder when he slid into second base during a recreational baseball game. He was unable to continue in the game due to diffuse pain and swelling of his hindfoot. A rupture of the Achilles tendon was diagnosed incidentally on palpation and observation of a positive Thompson's squeeze test. Subcutaneous hemorrhage at the lateral aspect of the heel and a small bone fragment under the lateral malleolus on an anteroposterior plain radiograph indicated a fracture of the calcaneal wall. At surgery, a complete rupture of the Achilles tendon and an avulsion of the calcaneofibular ligament from the calcaneal wall were seen. Both injuries were surgically repaired, and the patient subsequently did well. The mechanism of injury was thought to be impact hyperdorsiflexion of the ankle with rupture of the Achilles tendon accompanied by an inversion injury. Using a literature search, it was found that this combination of injuries has not been previously reported.

Achilles Tendon↗
PubMed1999

Shoulder proprioception: latent muscle reaction times.

PURPOSE: The purpose of this study was to identify electromyographic (EMG) differences in the latent muscle reaction timing (LMRT) of the rotator cuff between trained overhead throwers and control subjects in response to sudden internal rotation perturbation (P < or = 0.05). METHODS: Subjects included 15 trained overhead throwers (male intercollegiate baseball players) and 15 untrained subjects (males not active in competitive throwing sports). Subjects were tested while seated, with their dominant glenohumeral joint positioned in 90 degrees abduction/external rotation (scapular plane), their elbow flexed to 90 degrees, and their forearm placed in the perturbation device. Rotator cuff LMRT was assessed as they tried to decelerate a variably timed, sudden internal rotation force. EMG sampling (2000 Hz, 2-s duration) began immediately before perturbation. RESULTS: Trained throwers had slower infraspinatus (P = 0.011) and teres minor (P = 0.024) LMRT and decreased supraspinatus (P = 0.001) and posterior deltoid (P = 0.0001) muscle activation duration compared with control subjects. CONCLUSIONS: These results suggest that the rotator cuff muscles of trained throwers may be downregulated in response to sudden internal rotation perturbation. Although these adaptations would enable greater internal rotation velocities during overhead throwing, they may also contribute to glenohumeral joint pathology. The identification of changes in rotator cuff LMRT in response to sudden internal rotation perturbation suggests an area of acquired neuromuscular imbalance warranting consideration by those involved in the rehabilitation and conditioning of the overhead throwing athlete.

Adolescent↗