This study provides a comparative analysis of certain features of upright and inverted stance in collegiate-level competitive gymnastic and diving athletes. A particular focus was the compensatory movement strategies used to maintain inverted stance. The analyses revealed that the motion of the center of pressure was significantly greater in the hand stance as opposed to the upright stance condition. Instability increased over the duration of a 15-s hand stance trial, and it was paralleled by the introduction of a small set of compensatory movement strategies that included enhanced motion at the distal segments of the legs and at the elbow joint. The compensatory movement strategies appeared to be in support of minimizing variability of motion in the head and trunk. The relative contribution of the principal sources of this instability in the hand stance remains to be determined.
Semyon M. Slobounov and Karl M. Newell
Martina Navarro, Nelson Miyamoto, John van der Kamp, Edgard Morya, Ronald Ranvaud and Geert J.P. Savelsbergh
We investigated the effects of high pressure on the point of no return or the minimum time required for a kicker to respond to the goalkeeper’s dive in a simulated penalty kick task. The goalkeeper moved to one side with different times available for the participants to direct the ball to the opposite side in low-pressure (acoustically isolated laboratory) and high-pressure situations (with a participative audience). One group of participants showed a significant lengthening of the point of no return under high pressure. With less time available, performance was at chance level. Unexpectedly, in a second group of participants, high pressure caused a qualitative change in which for short times available participants were inclined to aim in the direction of the goalkeeper’s move. The distinct effects of high pressure are discussed within attentional control theory to reflect a decreasing efficiency of the goal-driven attentional system, slowing down performance, and a decreasing effectiveness in inhibiting stimulus-driven behavior.
Jill L. McNitt-Gray
available to facilitate learning. In acrobatic sports, such as diving and gymnastics, fear can be a limiting factor. Creation of a safe environment where technique modifications can be explored, developed, and mastered can facilitate the learning process. For example, learning new skills often benefits from
Karen H. Weiller, Catriona T. Higgs and Scott B. Martin
Sports are omnipresent in American society; available for viewing 24 hours a day and can constitute much of everyday life and conversation. Researchers have indicated that men and women relate to sport differently (Gantz & Wenner, 1991). Evidence shows males outnumber females in sport viewership, and in the past much of the sport programming to which we are exposed caters specifically to men. The purpose of the present study was to explore issues related to audience perception of the 1996 Olympic Games. Participants (125 males and 92 females) ranging from 18 to 40 years of age were administered a gender specific version of the Audience Perception Questionnaires (APQ) following viewing video segments of men’s and women’s competitions (i.e., basketball, gymnastics, swimming and diving, and volleyball). The two versions of the APQ were developed from current literature, and by employing a delphi technique to validate the APQ. Factor analyses resulted in four underlying media perception dimensions: Commentary Coverage, Gender Marking and Stereotyping, Hierarchy of Naming, and Verbal Descriptors. Results revealed perceptions of male and female athletes by the public are influenced to a great degree by gender.
Ian C. Jones and Doris L. Miller
The running forward springboard approaches of 20 divers on the U.S. senior national diving team were analyzed using planar video analysis and accelerometer output; the purpose was to investigate kinematic responses of the springboard tip and divers' lower extremities to alterations in fulcrum setting. Divers executed jump takeoffs from a 1-m springboard with the fulcrum at their preferred setting as well as 0.144 m (two fulcrum numbers) forward and 0.144 m back from that location. Potential advantages of setting the fulcrum back further from the tip (as opposed to closer) included greater downward board tip vertical velocity at the beginning of takeoff, more time to generate angular momentum, and increased vertical velocity going into flight. However, setting the fulcrum further back required the diver to achieve longer hurdle flight durations and to reverse downward motion from a more flexed knee position. Accelerometer output in the absence of video was not beneficial as a means of providing immediate performance feedback for coaching purposes.
Daniel Tan, Brian Dawson and Peter Peeling
This study aimed to quantify the hemolytic responses of elite female football (soccer) players during a typical weekly training session.
Ten elite female football players (7 field players [FPs] and 3 goalkeepers [GKs]) were recruited from the Australian National Women’s Premier League and asked to provide a venous blood sample 30 min before and at the immediate conclusion of a typical weekly training session. During this training session, the players’ movement patterns were monitored via a 5-Hz global positioning system. The blood samples collected during the training session were analyzed for iron status via serum ferritin (SF) analysis, and the hemolytic response to training, via serum free hemoglobin (Hb) and haptoglobin (Hp) measurement.
50% of the participants screened were found to have a compromised iron stores (SF <35 μg/L). Furthermore, the posttraining serum free Hb levels were significantly elevated (P = .011), and the serum Hp levels were significantly decreased (P = .005), with no significant differences recorded between the FPs and GKs. However, the overall distance covered and the movement speed were significantly greater in the FPs.
The increases in free Hb and decreases in Hp levels provide evidence that a typical team-sport training session may result in significant hemolysis. This hemolysis may primarily be a result of running-based movements in FPs and/or the plyometric movements in GKs, such as diving and tackling.
Bryan E. Denham
Drawing on data gathered from high-school seniors in the 2008 Monitoring the Future Study of American Youth (N = 2,063), this research examined the explanatory effects of competitive sports participation on alcohol consumption and marijuana use using race and noncompetitive exercise frequency as controls. Among males, competitive sports included baseball, basketball, football, soccer, track and field, and weightlifting, and among females, sports included softball, basketball, soccer, swimming and diving, track and field, and volleyball. White males reported greater alcohol consumption than Black and Hispanic respondents, with competitors in baseball, football and weightlifting consuming alcohol more frequently. The use of marijuana did not depend on race, but baseball players and weightlifters reported significantly more use. Among females, race differences did not emerge in ordinal regression models testing effects on alcohol consumption, but participants in every sport reported drinking alcohol more frequently. White female athletes also appeared to smoke marijuana more frequently. Overall, results suggested comparably strong effects for female sport environments while male behaviors varied by race, noncompetitive exercise frequency, and sports competition. Limitations of the study and recommendations for future research are offered.
Montse C. Ruiz, Yuri Hanin and Claudio Robazza
In this investigation we describe an individualized approach in the assessment of athletes’ experiences associated with successful and poor performances. Two studies were conducted to develop a profiling procedure to assess eight modalities of performance-related states. In Study 1, six high-level athletes assessed their states before most successful and unsuccessful performances using a preliminary 71-item stimulus list developed by a panel of four emotion researchers. They also rated the intensity of their states on a modified Borg’s CR-10 scale. In Study 2, five top-level divers assessed their states before multiple dives (three successful and three unsuccessful) using a revised 74-item list. The perceived impact on performance was also examined using an open-ended question. Individual profiles reflected two typical curves discriminating successful and unsuccessful performances. High individual variability in item content and intensity was found. Athletes reported a wide range of interrelated experiences associated with their performances. Our findings support the practical utility of individualized profiling to assess athletes’ performance-related states.
Katherine A. Beals and Amanda K. Hill
The purpose of this study was to examine the prevalence of disordered eating (DE), menstrual dysfunction (MD), and low bone mineral density (BMD) among US collegiate athletes (n = 112) representing 7 different sports (diving, swimming, x-country, track, tennis, field hockey, and softball) and determine differences in prevalence existed between athletes participating in lean-build (LB) and non-lean build (NLB) sports. DE and MD were assessed by a health, weight, dieting, and menstrual history questionnaire. Spinal BMD was determined via dual energy x-ray absorptiometry. Twenty-eight athletes met the criteria for DE, twenty-nine for MD, and two athletes had low BMDs (using a Z score below −2.0). Ten athletes met the criteria for two disorders (one with disordered eating and low BMD and nine with disordered eating and menstrual dysfunction), while only one athlete met the criteria for all three disorders. Using a Z score below −1.0, two additional athletes met the criteria for all three disorders and three more athletes met the criteria for a combination of two disorders. With the exception of MD, which was significantly more prevalent among LB vs. NLB sports (P = 0.053), there were no differences between the groups in the prevalence of individual disorders or combinations of disorders. These data indicate that the combined prevalence of DE, MD, and low BMD among collegiate athletes is small; however, a significant number suffer from individual disorders of the Triad.
J. Vincent, Charles Imwold, J. T. Johnson and Dwayne Massey
This study was a comparison of how selected newspapers from Canada, Great Britain, and the United States reported on female athletes competing in four “gender-appropriate” sports with female athletes competing in four “gender-inappropriate” sports at the Centennial Olympic Games. The liberal feminist theoretical framework underpinning this study views equality of opportunity and individual liberty as an inevitable by-product of political, legal, and educational reform juxtaposed with a gradual social acceptance. Content Analysis was used to examine all the articles and photographs from the front pages and the sports sections of the newspapers. Based upon the data, female athletes competing in the “gender-appropriate” sports of swimming, gymnastics, tennis, and diving received more newspaper coverage than female athletes competing in the “gender-inappropriate” sports of soccer, softball, field hockey, and volleyball in terms of the average number of words per article and the average number of paragraphs per article. In addition, the “gender-appropriate” athletes were over-represented in the average number of photographs, the average number of photographs on the first page, and the average number of photographs on the top of the pages. Qualitative analyses of articles and photographs revealed a subtle but discernable amount of culturally stereotyped coverage.