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Shana Harrington, Corinne Meisel and Angela Tate

Context:

The prevalence of shoulder pain in the competitive swimming population has been reported to be as high as 91%. Female collegiate swimmers have a reported shoulder-injury rate 3 times greater than their male counterparts. There has been little information on how to best prevent shoulder pain in this population. The purpose of this study was to examine if differences exist in shoulder range of motion, upper-extremity strength, core endurance, and pectoralis minor length in NCAA Division I female swimmers with and without shoulder pain and disability.

Methods:

NCAA Division I females (N = 37) currently swimming completed a brief survey that included the pain subscale of the Penn Shoulder Score (PSS) and the sports/performing arts module of the Disabilities of the Arm, Shoulder, and Hand (DASH) Outcome Measure. Passive range of motion for shoulder internal rotation (IR) and external rotation (ER) at 90° abduction was measured using a digital inclinometer. Strength was measured using a handheld dynamometer for scapular depression and adduction, scapular adduction, IR, and ER. Core endurance was assessed using the side-bridge and prone-bridge tests. Pectoralis minor muscle length was assessed in both a resting and a stretched position using the PALM palpation meter. All measures were taken on the dominant and nondominant arms.

Results:

Participants were classified as positive for pain and disability if the following 2 criteria were met: The DASH sports module score was >6/20 points and the PSS strenuous pain score was ≥4/10. If these criteria were not met, participants were classified as negative for pain and disability. Significant differences were found between the 2 groups on the dominant side for pectoralis muscle length at rest (P = .003) and stretch (P = .029).

Conclusions:

The results provide preliminary evidence regarding an association between a decrease in pectoralis minor length and shoulder pain and disability in Division I female swimmers.

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Angela Tate, Shana Harrington, Melissa Buness, Susan Murray, Caitlin Trout and Corinne Meisel

Context:

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.

Objectives:

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.

Design:

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.

Participants:

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.

Results:

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.

Conclusions:

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.

Open access

Stef Feijen, Angela Tate, Kevin Kuppens, Thomas Struyf, Anke Claes and Filip Struyf

Context: The latissimus dorsi plays a major role in generating the propulsive force during swimming. In addition, stiffness of this muscle may result in altered stroke biomechanics and predispose swimmers to shoulder pain. Measuring the flexibility of the latissimus dorsi can be of interest to reduce injury. However, the reliability of such measurement has not yet been investigated in competitive swimmers. Objective: To assess the within-session intrarater and interrater reliability of a passive shoulder flexion range of motion measurement for latissimus dorsi flexibility in competitive swimmers. Design: Within-session intrarater and interrater reliability. Setting: Competitive swimming clubs in Flanders, Belgium. Participants: Twenty-six competitive swimmers (15.46 [2.98] y; 16 men and 10 women). Intervention: Each rater performed 2 alternating (eg, left-right-left-right) measurements of passive shoulder flexion range of motion twice, with a 30-second rest period in between. Main Outcome Measures: The intraclass correlation coefficients were calculated to assess intrarater and interrater reliability. Results: Interrater intraclass correlation coefficient ranged from .54 (95% confidence interval [CI], −.16 to .81) to .57 (95% CI, −.24 to .85). Results for the intrarater reliability ranged from .91 (95% CI, .81 to .96) to .94 (95% CI, .87 to .97). Conclusion: Results of this study suggest that shoulder flexion range of motion in young competitive swimmers can be measured reliably by a single rater within the same session.