Limb symmetry index in competitive alpine ski racers: Reference values and injury risk identification according to age-related performance levels

ObjectiveThe physical demands of professional tennis combined with high training/match loads can contribute to musculoskeletal injury. The objectives of this study were to (1) describe the type, location and severity of injuries sustained during a 12-month tennis season in a cohort of professional female tennis players on the Women’s Tennis Association (WTA) tour and (2) prospectively investigate associations between training/match loads and injury.Methods52 WTA players competing at the Australian Open (2015) consented to participate. Injuries reported to WTA medical staff were classified using tennis-specific guidelines. Individual match exposure data were collected for all matches played at international level in 2015 and expressed per 1000 hours of WTA competition matchplay (MP) and 1000 match exposures (MEs). Variables associated with the number of injuries in the season and loss of time from competition were identified with regression analysis.ResultsThe injury incidence rate (IR) was 56.6 (95% CI: 49.5 to 64.6) per 1000 hours of MP or 62.7 (95% CI: 54.8 to 71.6) per 1000 MEs, although the IR of injuries resulting in loss of time from competition was lower (12.8 per 1000 hours of MP, 92 injuries/100 players). Lower limb (51%) and muscle/tendon (50%) injuries were the most common site and type of injury. Common specific injury site subcategories were the thigh, shoulder/clavicle, ankle and knee in order of frequency. Various measures of match load were significantly associated with injury.ConclusionThis study prospectively analysed injury profiles, including severity across an entire season of professional tennis, and investigated the relationship between training/match loads and injury. These data may help medical professionals develop injury risk identification and prevention programmes.

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GESTATIONAL AGE-RELATED REFERENCE VALUES FOR AMNIOTIC FLUID AMINO ACIDS: A USEFUL TOOL FOR PRENATAL DIAGNOSIS OF AMINOACIDOPATHIES

Prenatal Diagnosis ◽

10.1002/(sici)1097-0223(199607)16:7<623::aid-pd921>3.0.co;2-5 ◽

1996 ◽

Vol 16 (7) ◽

pp. 623-628 ◽

Cited By ~ 9

Author(s):

D. RABIER ◽

B. CHADEFAUX-VEKEMANS ◽

J. F. OURY ◽

J. AUPETIT ◽

J. BARDET ◽

...

Keyword(s):

Amino Acids ◽

Prenatal Diagnosis ◽

Amniotic Fluid ◽

Reference Values ◽

Gestational Age ◽

Age Related

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Hop Testing Provides a Reliable and Valid Outcome Measure During Rehabilitation After Anterior Cruciate Ligament Reconstruction

Physical Therapy ◽

10.2522/ptj.20060143 ◽

2007 ◽

Vol 87 (3) ◽

pp. 337-349 ◽

Cited By ~ 299

Author(s):

Andrea Reid ◽

Trevor B Birmingham ◽

Paul W Stratford ◽

Greg K Alcock ◽

J Robert Giffin

Keyword(s):

Anterior Cruciate Ligament ◽

Acl Reconstruction ◽

Outcome Measure ◽

Cruciate Ligament ◽

Measurement Properties ◽

Global Rating ◽

Symmetry Index ◽

Limb Symmetry Index ◽

Hop Tests ◽

Anterior Cruciate

Background and Purpose Although various hop tests have been proposed as performance-based outcome measures following anterior cruciate ligament (ACL) reconstruction, limited reports of their measurement properties exist. The purpose of this study was to investigate the reliability and longitudinal validity of data obtained from hop tests during rehabilitation after ACL reconstruction. Subjects Forty-two patients, 15 to 45 years of age, who had undergone ACL reconstruction participated in the study. Methods and Measures The study design was prospective and observational with repeated measures. The subjects performed a series of 4 hop tests on 3 separate occasions within the 16th week following surgery and on a fourth occasion 6 weeks later. The tests were a single hop for distance, a 6-m timed hop, a triple hop for distance, and crossover hops for distance. Performance on the ACL-reconstructed limb was expressed as a percentage of the performance on the nonoperative limb, termed the “limb symmetry index.” Subjects also completed the Lower Extremity Functional Scale and a global rating of change questionnaire. Results Intraclass correlation coefficients for limb symmetry index values ranged from .82 to .93. Standard errors of measurement were 3.04% to 5.59%. Minimal detectable changes, at the 90% confidence level, were 7.05% to 12.96%. Changes in hop test scores on the operative limb were statistically greater than changes on the nonoperative limb. Pearson correlations (r) between change in hop performances and self-reported measures ranged from .26 to .58. Discussion and Conclusion The results show that the described series of hop tests provide a reliable and valid performance-based outcome measure for patients undergoing rehabilitation following ACL reconstruction. These findings support the use and facilitate the interpretation of hop tests for research and clinical practice.

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Immunodeficiency and Immunomonitoring

LaboratoriumsMedizin ◽

10.1515/labmed-2014-0030 ◽

2015 ◽

Vol 38 (1) ◽

Author(s):

Harald Renz

Keyword(s):

Reference Values ◽

Inflammatory Diseases ◽

Severe Combined Immunodeficiency ◽

Cell Receptor ◽

Chronic Inflammatory Disease ◽

Age Related ◽

First Results ◽

The Usa ◽

Developing Area ◽

Excision Circles

AbstractImmunological diagnostics is a rapidly developing area in laboratory medicine. Most recently, major developments in the area of immunodeficiency and the monitoring of chronic inflammatory diseases have been observed. Regarding immuno-monitoring, recently a consensus panel for basic flow cytometry has been published together with age-related reference values. In the USA, the search for severe inherited immunodeficiency diseases (such as severe combined immunodeficiency disease, SCID) is part of neonatal screening procedures. Recently, several US states published first results which are based on the measurement of T-cell receptor excision circles (TRECs). Furthermore, age-dependent reference values for the measurement of IgG subclasses and subclass-specific vaccination antibodies have been published. Monitoring of chronic inflammatory disease focuses on asthma. A novel classification based on the cellular distribution of neutrophils versus eosinophils in induced sputum has been developed. Furthermore, novel biomarkers, such as periostin, are currently under evaluation. Such novel approaches of phenotyping are now the basis of individualized therapeutic approaches in patients with (severe) asthma, who respond to certain biologicals.

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An obstetric sphincter injury risk identification system (OSIRIS): is this a clinically useful tool?

International Urogynecology Journal ◽

10.1007/s00192-016-3125-2 ◽

2016 ◽

Vol 28 (3) ◽

pp. 367-374 ◽

Cited By ~ 12

Author(s):

Sara S. Webb ◽

Karla Hemming ◽

Madhi Y. Khalfaoui ◽

Tine Brink Henriksen ◽

Sara Kindberg ◽

...

Keyword(s):

Injury Risk ◽

Risk Identification ◽

Identification System ◽

Sphincter Injury

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Reference values of magnesium and potassium in mononuclear cells and erythrocytes of children

Clinical Chemistry ◽

10.1093/clinchem/36.7.1323 ◽

1990 ◽

Vol 36 (7) ◽

pp. 1323-1327 ◽

Cited By ~ 3

Author(s):

W B Geven ◽

G M Vogels-Mentink ◽

J L Willems ◽

T de Boo ◽

W Lemmens ◽

...

Keyword(s):

Cord Blood ◽

Reference Values ◽

Mononuclear Cells ◽

Serum Magnesium ◽

Magnesium Content ◽

Age Related ◽

Range Of Values

Abstract Reference values for magnesium and potassium contents of mononuclear cells and erythrocytes were estimated in cord blood and in children from infancy through adolescence. No differences were detected between results for boys and girls. The mononuclear magnesium content was independent of age and was within the adult range of values. No significant correlation was shown between magnesium in serum and in mononuclear cells. Mononuclear potassium also showed no age-related differences. The correlation between magnesium and potassium contents in mononuclear cells was significant: however, the correlation was lower when the magnesium and potassium contents were expressed in terms of protein potent: micromoles or millimoles per gram of protein, respectively. The concentration of magnesium in erythrocytes was significantly lower in cord blood and during the first month of life, compared with that at older ages, and showed no significant correlation with serum magnesium. The concentration of erythrocyte potassium was independent of age and showed a low but significant correlation with erythrocyte magnesium content.

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