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Effect of Plyometric Training on Neural and Mechanical Properties of the Knee Extensor Muscles.

Int J Sports Med. 2013 Jul 30;

Authors: Behrens M, Mau-Moeller A, Bruhn S

Abstract

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Effect of anterior acetabular rim recession on radiographic parameters: an in vivo study.

Arthroscopy. 2013 Aug;29(8):1292-6

Authors: Gross CE, Hellman M, Freedman R, Hart M, Reddy A, Salata M, Bush-Joseph C, Nho SJ

Abstract
PURPOSE: The purpose of this study was to validate additional radiographic parameters that detect changes within the acetabular cavity during acetabular rim trimming for pincer-type femoroacetabular impingement in an in vivo setting.
METHODS: Patients who met the inclusion criteria and underwent arthroscopic acetabular rim trimming had their preoperative and postoperative anteroposterior radiographs measured. Intraoperatively, these patients had their labrums detached, acetabular walls trimmed by roughly 3 to 5 mm, and then labrums reattached. Radiographic measurements were subsequently obtained by use of the anterior rim angle (ARA), anterior wall angle (AWA), and anterior margin ratio (AMR).
RESULTS: Statistically significant changes were seen in the postoperative ARA, AWA, and AMR. Mean pre- and post-trimming changes were 83.8° and 87.9°, respectively, for the ARA; 38.8° and 35.8°, respectively, for the AWA; and 0.57 and 0.53, respectively, for the AMR. There were no postoperative complications. No patients had any instability events.

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Exercise Training at MLSS Decreases Weight Gain and Increases Aerobic Capacity in Obese Zucker Rats.

Int J Sports Med. 2013 Jul 30;

Authors: Almeida JA, A Petriz B, Gomes CP, Araujo RC, Pereira RW, Franco OL

Abstract

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One-stage arthroscopic repair of rotator cuff tears with shoulder stiffness.

Arthroscopy. 2013 Aug;29(8):1283-91

Authors: Ho WP, Huang CH, Chiu CC, Lee CH, Chen CH, Leu TH, Chuang TY

Abstract
PURPOSE: The purpose of this study is to describe a 1-stage treatment with concomitant arthroscopic capsular release and rotator cuff repair and present clinical outcomes with a minimum follow-up of 2 years.
METHODS: Arthroscopic rotator cuff repair was performed in 211 consecutive patients. Forty-three patients had severe concomitant shoulder stiffness at the time of the repair. In the stiffness group, 1-stage arthroscopic capsular release and rotator cuff repair were performed. Preoperative mean passive forward flexion was 124°, whereas external rotation at the side was 309°. All patients were evaluated at a minimum 2-year follow-up, which included a visual analog scale score for pain, tests of muscle power and range of motion, the Constant score, and the modified American Shoulder and Elbow Surgeons shoulder evaluation form and modified University of California, Los Angeles scores.

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Cardiac Regeneration and Cellular Therapy: Is there a Benefit of Exercise?

Int J Sports Med. 2013 Jul 30;

Authors: Figueiredo PA, Appell Coriolano HJ, Duarte JA

Abstract

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Results of arthroscopic partial repair of large retracted rotator cuff tears.

Arthroscopy. 2013 Aug;29(8):1275-82

Authors: Wellmann M, Lichtenberg S, da Silva G, Magosch P, Habermeyer P

Abstract
PURPOSE: To evaluate the midterm results of partial rotator cuff repair using the Constant score and the acromiohumeral radiographic measurement.
METHODS: Thirty-eight patients with a mean age of 65 years and a large retracted rotator cuff tear (at least 2 tendons) were included in the study. Patients underwent clinical examination, standard radiography, and isometric strength testing at a mean follow-up of 47 months. The rotator cuff tears were classified as posterosuperior, anterosuperior, or global tears (≥3 tendons), and an arthroscopic partial repair was performed.
RESULTS: The mean Constant score significantly increased from 56 points before surgery to 71 points after surgery (P = .041); the mean age- and sex-adjusted Constant score significantly improved from 63% to 90% at a mean follow-up of 47 months after arthroscopic partial rotator cuff repair (P = .003); and the subcategories pain and activity significantly improved (P = .001, P = .014, respectively). The active range of motion improved from 133° of flexion and 111° of abduction before surgery to 163° of forward flexion and 156° of abduction after surgery (P < .001). However, the active range of external rotation decreased from 44° before surgery to

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Injuries among Talented Young Dancers: Findings from the UK Centres for Advanced Training.

Int J Sports Med. 2013 Jul 30;

Authors: Steinberg N, Aujla I, Zeev A, Redding E

Abstract
The aim of the present study was to characterize the injuries of young dancers attending Centres for Advanced Training. 806 dancers, ages 10-18 years responded to surveys regarding their biological profile, dance experience and injury history, and were examined for their anthropometric profile. Of the 806 dancers, 347 reported an injury. Based on 4 age groups, the total hours of practice per week increased significantly with increasing age. Incidence of injuries per 1 000 h of dance practice for dancers ages 11-12 were found to be significantly higher compared to the incidence for dancers ages 13-18 (p<0.05). Foot and ankle and other lower extremities were the most common injury location, and muscle injuries were the most common type of injury. Total months in CAT training (OR=1.044, 95% CI=1.014-1.075) and hours per week in creative style practice (OR=1.282, 95% CI=1.068-1.539) were found to be significantly associated with injuries. In conclusion, both young and mature dancers are exposed to extensive risk of injury. The intensity of training (such as number of months and number of hours of training per week) is important factor that should be taken into account in order to decrease future injuries among young dancers.

Fit and healthy Paralympians--medical care guidelines for disabled athletes: a study of the injuries and illnesses incurred by the Polish Paralympic team in Beijing 2008 and London 2012.

Br J Sports Med. 2013 Jul 31;

Authors: Gawronski W, Sobiecka J, Malesza J

Abstract
BACKGROUND: Successful performance in Paralympic Games (PGs) requires continuous monitoring of the athletes' health and optimal medical care.
OBJECTIVE: To present the health status and disability category of Polish athletes at the Beijing and London PGs, as well as to compare the injuries and illnesses incurred during both PGs in view of the more stringent healthcare guidelines implemented before London.
METHODS: The preparticipation examination (PPE) involved general medical/orthopaedic examination, ECG, blood and urine tests. The mandatory periodic health evaluation (PHE) introduced before London comprised general medical/orthopaedic/dental examination, anthropometric measurement, ECG, stress test, laryngological and ophthalmological consultations, and blood and urine tests. The incidence rate (IR) for all injuries/illnesses with 95% CI, incidence proportion and exposure data (athlete-days) were calculated.

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Adult ECG Criteria for Left Ventricular Hypertrophy in Young Competitive Athletes.

Int J Sports Med. 2013 Jul 30;

Authors: Speranza G, Magaudda L, de Gregorio C

Abstract
Time-tested data indicate that ECG diagnosis of left ventricular hypertrophy in young athletes is challenging due to low sensitivity of the commonly used criteria. We sought to establish whether adult ECG criteria can be appropriate to make diagnosis of both common and uncommon patterns of left ventricular hypertrophy in young trained athletes. A total of 122 athletes, ages 16.2±3.8 years, training at least 5 h per week, were studied with Sokolow-Lyon voltage, Romhilt-Estes, Cornell voltage, Cornell Product, Perugia and Framingham scores. Garson Criteria were also investigated in athletes under 16. Participants were divided into 2 groups based on the presence (group-A, n=56) or absence (group-B, n=66) of at least one positive ECG score. Test performance was calculated with respect to accurate echocardiographic diagnosis of left ventricular hypertrophy. There were no inter-group differences regarding physical characteristics and training burden. 9 athletes from group-A (16%) and 2 from group-B (3%) were found to have left ventricular hypertrophy, likely to be pathological in 2 cases from group-A. Criteria gathering both QRS voltages and ST-T anomalies, like Perugia-score, best identified this subgroup and should be preferred to those based on QRS voltage analysis alone.