, but this requires sufficient shoulder flexion range of motion (ROM). 3 , 4 Adequate flexibility of the LD muscle also allows the shoulder to reach full motion by enhancing both lateral rotation of the humerus and scapular upward rotation. 4 Competitive swimmers are often exposed to tremendous
Stef Feijen, Angela Tate, Kevin Kuppens, Thomas Struyf, Anke Claes and Filip Struyf
Andrea Hazen, Carolyn Johnstone, Garry L. Martin and Suja Srikameswaran
A videotaping feedback package was developed for improving skills of youth competitive swimmers. Experiment 1 examined the videotaping package for improving freestyle and backstroke racing turns of young competitive swimmers. Positive results were obtained in a multiple-baseline design across subjects. Experiment 2 compared the videotaping feedback package to a group videotaping procedure (that the coach had been using at the time of this research) for improving freestyle swimming strokes of young competitive swimmers. The videotaping feedback package was effective whereas the group videotaping procedure had little or no effect. For most subjects in the two studies, improvements were maintained with minimal prompting and feedback under normal practice conditions. Suggestions for future research are discussed.
Diane E. Taub and Rose Ann Benson
Since most research on eating disorders among athletes has focused on college-age samples, the present investigation examines the adolescent competitive swimmer. Three areas related to weight and eating habits were explored: general concerns about weight, use of weight control techniques, and tendencies toward anorexia nervosa and bulimia nervosa and associated behavioral/personal characteristics. Previous research has found females to be at greater risk than males, thus gender comparisons were undertaken. Questionnaires were completed by 85 adolescent competitive swimmers attending a nationally known summer swim camp at a large midwestern university. Consistent with the cultural norm of thinness for women, young female swimmers desired weight loss more than their male counterparts did. In terms of actual pathogenic weight control techniques or eating disorder tendencies, however, few significant gender differences were found. Neither male nor female adolescent swimmers were particularly susceptible to eating disorders or pathogenic weight control techniques.
Mark Kluemper, Tim Uhl and Heath Hazelrigg
Imbalanced shoulder muscles might cause poor posture in swimmers, which has been implicated as potential cause of injury.
To determine whether a training program can reduce forward shoulder posture.
College swimming pool.
39 competitive swimmers (age 16 ± 2 years) divided into an exercise group (n = 24) and a control group (n = 15).
The experimental group performed a partner-stretching program on the anterior shoulder muscles and a strengthening regimen focusing on the posterior shoulder muscles for 6 weeks. The control group participated in normal swim-training activities.
Main Outcome Measures:
Shoulder posture was measured as the distance from the anterior acromion to a wall using a double-square method.
The experimental group significantly reduced the distance of the acromion from the wall in a resting posture (–9.6 ± 7.3 mm) as compared with the control group (–2.0 ± 6.9 mm).
A training routine might reduce the forward shoulder posture present in most competitive swimmers.
Robert G. McCulloch, Donald A. Bailey, Robert L. Whalen, C. Stuart Houston, Robert A. Faulkner and Bruce R. Craven
This cross-sectional study compared differences in os calcis bone density and distal radius bone mineral content (BMC) among adolescent soccer players, competitive swimmers, and control subjects. Sixty-eight males and females (23 soccer players, 20 swimmers, 25 controls) ages 13 to 17 served as subjects. The results for os calcis trabecular density indicate a trend that may be of clinical significance and that may warrant further study. The swimmers had the lowest os calcis density in both sexes whereas the soccer players had the highest bone density at this weight-bearing site (F=2.54, p<.08). No differences with respect to distal radius BMC were observed among activity groups or between sexes.
W. Kerry Mummery and Leonard M. Wankel
This study examined the ability of the theory of planned behavior (TPB) to predict training adherence in a sample of adolescent competitive swimmers. Participants (N= 116, mean age = 14.8 years), who were drawn from 19 competitive swimming clubs from across Canada, completed measures relating to TPB before a major training cycle in their swim season. Results showed that training intention was significantly related to training behavior and that the direct measures of TPB (attitude, subjective norm, and perceived behavioral control) predicted a significant portion of the variance in the measure of training intention. Subsequently splitting the attitude measure into affective and instrumental components revealed that the instrumental portion of the attitudinal measure contributed significantly to predicting training intention, whereas the affective portion did not. These findings suggest that TPB offers insight into training behavior and that the two measures of evaluative attitude contribute differently to predicting training intention.
Kristine L. Chambers and Joan N. Vickers
The effects of a coaching intervention involving Bandwidth Feedback and Questioning (BF-Q) on competitive swim times (cTIME), practice swim times (pTIME), and technique (TECH) were determined for competitive youth swimmers. The pre-post-transfer design spanned one short-course (25m) swim season. It was concluded that coaching in which feedback was delayed and replaced with questions directed to the athletes contributed to improved technique and subsequent faster race times. Compared to the Control group, the BF-Q group displayed greater gains in TECH during the intervention period and greater improvement in cTIME during the transfer period. Results are presented in a context of cognitive psychology, motor learning, and questioning. Applications to coaching practice and coach training are also discussed.
Angela Tate, Shana Harrington, Melissa Buness, Susan Murray, Caitlin Trout and Corinne Meisel
Youth- through masters-level competitive swimmers incur significant shoulder pain. Risk factors associated with shoulder pain include high swimming yardage, a lack of cross-training, decreased shoulder strength and reduced core endurance, and limited posterior shoulder and pectoral length. Since training, swimming exposure, and physical-performance measures have all been associated with shoulder pain, the methods used to train swimmers may influence the development of shoulder pain, yet studies delineating training methods are lacking.
To identify in-water and dry-land practices among youth- through masters-level swimmers in the United States (US) and describe the potential effects of training practices on swimmers’ shoulders.
A Web-based survey was developed to identify common training practices in 5 areas: quantification of swimming and dry-land training and in-water techniques such as kicking drills, upper-body stretching, shoulder and core strengthening, and cross-training.
156 swim-team coaches or captains of youth, high school, and college swim teams and 196 masters swimmers participated (N = 352). There was geographic representation from across the US.
Responses indicated diverse training practices. However, most respondents used kicking drills, which may provoke shoulder pain due to prolonged poor positioning. High yardage swum by high school and college teams increases their risk of shoulder tendinopathy. Stretching and strengthening exercises and dosages commonly used were inconsistent with current research recommendations and lacked specificity in terms of addressing typical mobility restrictions and muscle weaknesses described in the swimming literature. Core strengthening and cross-training are frequently performed.
Several areas of in-water and dry-land practice were identified that may put swimmers’ shoulders at risk for injury. Further research regarding the safety and efficacy of training programs is recommended to determine optimal methods of injury prevention and performance enhancement.
Carlos Ayan, Jose Cancela Carral and Carlos Montero
The relationship between physical activity (PA) and academic performance has been previously studied. However, there is a need to determine if the intensity of the PA performed and its predominant metabolic pathway show any degree of association with the academic achievement.
Cross-sectional data were gathered from Spanish young competitive swimmers. Academic achievement was based on individual grades for each student; the PA level was measured by means of the Physical Activity Questionnaire for Adolescents. Swimmers were classified according to the preferential energetic cost of the event in which they competed.
A total of 254 swimmers finished the study; 62.8% of them were considered moderate active. The statistical analysis showed that the higher the level of PA performed, the better the average grades achieved. This relationship was significant among the girls (P = .04). No significant differences were found regarding the influence of the kind of swimming event. However, taking part in aerobic events proved to have a significant influence on the academic achievement for girls (P = .01).
The link between academic achievement and PA depends on the intensity in which the PA is performed, as well as on its predominant metabolic pathway. However, such associations seem to be gender-dependent.
Courtney J. McGowan, David B. Pyne, Kevin G. Thompson, John S. Raglin and Ben Rattray
An exercise bout completed several hours prior to an event may improve competitive performance later that same day.
To examine the influence of morning exercise on afternoon sprint-swimming performance.
Thirteen competitive swimmers (7 male, mean age 19 ± 3 y; 6 female, mean age 17 ± 3 y) completed a morning session of 1200 m of variedintensity swimming (SwimOnly), a combination of varied-intensity swimming and a resistance-exercise routine (SwimDry), or no morning exercise (NoEx). After a 6-h break, swimmers completed a 100-m time trial.
Time-trial performance was faster in SwimOnly (1.6% ± 0.6, mean ± 90% confidence limit, P < .01) and SwimDry (1.7% ± 0.7%, P < .01) than in NoEx. Split times for the 25- to 50-m distance were faster in both SwimOnly (1.7% ± 1.2%, P = .02) and SwimDry (1.5% ± 0.8%, P = .01) than in NoEx. The first 50-m stroke rate was higher in SwimOnly (0.70 ± 0.21 Hz, mean ± SD, P = .03) and SwimDry (0.69 ± 0.18 Hz, P = .05) than in NoEx (0.64 ± 0.16 Hz). Before the afternoon session, core (0.2°C ± 0.1°C [mean ± 90% confidence limit], P = .04), body (0.2°C ± 0.1°C, P = .02), and skin temperatures (0.3°C ± 0.3°C, P = .02) were higher in SwimDry than in NoEx.
Completion of a morning swimming session alone or together with resistance exercise can substantially enhance sprint-swimming performance completed later the same day.