ABSTRACT
BACKGROUND: The purpose of this study is to assess injury patterns in collegiate club quidditch athletes at a single university over three seasons. Injury data were gathered from athletic trainers that provided sideline medical coverage during competitions, the on-site athletic training center where athletes had daily access for evaluation and treatment for acute and chronic injuries, and a sports medicine physician at the on-campus student health center. Athlete exposures were estimated using available previous rosters, practice, and game schedules for the 2014-2017 quidditch seasons. Injuries were evaluated regarding the sex of the athlete, mechanism, body part injuries, and injury type. This is a retrospective descriptive epidemiology study. RESULTS: The overall injury incidence rate (IR) for collegiate club quidditch injuries was 4.55 per 1000 athlete exposures (AEs). Male athletes had an IR = 5.22 (95% CI 3.77, 7.23). Females had an IR = 3.77 (95% CI 2.49, 5.72). The most common mechanism of injury in males was collision with another athlete (36%; IR = 1.88; 95% CI 1.09, 3.24). The most common injuries were lower extremity injuries (foot, ankle, lower leg, knee, thigh, hip/groin) at 57%. The most common injury type in males was sprains at 39% (IR = 2.03; 95% CI 1.20, 3.42). The overall incidence rate for all quidditch athletes for concussions was 1.18 per 1000 AEs. CONCLUSIONS: Quidditch is an increasingly popular mixed-gender collegiate club sport. This study helps identify areas for improvement in education, injury prevention, and care of athletes at the local and national levels. Concussion rates in quidditch are comparable to other contact sports and should encourage discussion to make rule changes to improve the safety of the sport.
Subject(s)
Antibodies, Monoclonal/adverse effects , Colonic Diseases/etiology , Fungemia/etiology , Histoplasmosis/etiology , Immunocompromised Host , Ulcer/etiology , Aged , Amphotericin B/therapeutic use , Antibodies, Monoclonal/therapeutic use , Antirheumatic Agents/adverse effects , Antirheumatic Agents/therapeutic use , Arthritis, Rheumatoid/drug therapy , Arthritis, Rheumatoid/immunology , Colonic Diseases/diagnosis , Colonic Diseases/drug therapy , Colonoscopy/methods , Female , Follow-Up Studies , Fungemia/diagnosis , Fungemia/drug therapy , Histoplasmosis/diagnosis , Histoplasmosis/drug therapy , Humans , Infliximab , Risk Assessment , Ulcer/diagnosis , Ulcer/therapyABSTRACT
Monoclonal B-cell populations have been detected in the peripheral blood of apparently healthy individuals by flow cytometry. In 2005, the term monoclonal B-cell lymphocytosis (MBL) was proposed to describe these findings. MBL may be immunophenotypically similar to chronic lymphocytic leukaemia (CLL) and, like CLL, the prevalence is higher in males and older individuals. We studied the prevalence of MBL in blood donors from the Midwestern United States. Samples from 5141 donors were examined and seven (0.14%) were found to have immunophenotypic characteristics of MBL or CLL. Immunoglobulin heavy chain analysis yielded monoclonality or oligoclonality. Prior and subsequent to the study, an additional undetermined number of blood donors were screened and seven of these expressed immunophenotypic characteristics of MBL or CLL. We thus found a total of 14 healthy blood donors with monoclonal expansions of B-lymphocyte populations. Of these, 12 were presumptively classified as MBL and two as CLL. All but two of the donors were male; the mean age was 59 years. The clinical importance of these findings with regard to transfusion medicine has not been established.
