In the badminton season 1983/1984, a prospective injury registration was done in 375 randomly chosen elite and recreational badminton players, of whom 81% could be followed. We found 257 injuries: an incidence of 2.9 injuries/player/1000 badminton hours. Men were more frequently injured than women. The prevalence was 0.3 injury per player. It was highest in men, and there was no difference between elite and recreational badminton players; 92% of the injured were playing with their injury. The pathophysiology was overuse in 74% (169/229), strains in 12% (28/229), sprains in 11% (26/229), and fractures in 1.5% (3/229). Possibilities for reducing the number of injuries and their severity are increased injury information to players and trainers and the introduction of stretching all involved muscle groups.
All visits to physicians in the Orivesi Region Federation of Municipalities for Public Health Work in Finland paid due to symptomatic osteoarthrosis of the knee joint were prospectively recorded over a period of one year. Two hundred and thirty four visits were made, accounting for 0.63% of all visits. The prevalence of knee osteoarthrosis was 1.11% (men 0.45%, women 1.72%), and the incidence was 0.60%. The disease occurred almost twice as often in the right knee than in the left. The study provides basic information about patients needing medical help because of symptomatic knee osteoarthrosis. The results can be used as an aid to the planning of examination and treatment resources and in assessment of the need for such services.
One strain of Acinetobacter calcoaceticus biovar anitratus caused colonization of 111 patients admitted to an intensive care unit (ICU) during a 2-year period. All patients were intubated and had received antibiotic therapy prior to colonization. Morbidity due to the organism was about 1%. The colonization rate showed a decreasing trend during the study period, but no seasonal variation. The strain was found in the air in a low concentration and on the hands of 8-13% of the members of the staff. No chronic carriers were found.
The increasing number of accidents associated with off-road motor vehicles used for recreational purposes prompted this prospective study. During 1985 the records of victims of all motor vehicle accidents who were seen at the Hudson Bay Union Hospital, Hudson Bay, Sask., were studied; patients involved in on-road vehicle accidents were included for comparison. Emphasis was placed on age, vehicle type, mechanism of accident, injury severity and the use of safety features. Almost half of the victims of off-road vehicle accidents were under 16 years of age. The poor adherence to government legislation and manufacturer recommendations was evident in the number of people who did not wear helmets or use headlights.
Body mass index (weight (kg) divided by height squared (m2] and its association with the risk of myocardial infarction and death from all causes were studied prospectively in a randomly selected population sample in eastern Finland aged 30-59 at outset in 1972. The study population consisted of 3786 men and 4120 women. The participation rate in the survey in 1972 was over 90%. All deaths and admissions to hospital in the sample were obtained from the National Death Certificate and Hospital Discharge Registers. During the seven years of follow up until 1978, 170 men and 52 women had acute myocardial infarction, and during the nine years up to 1980, 223 men and 92 women died. Independent of age, men with a body mass index of 28.5 or more had a significantly higher incidence of acute myocardial infarction. This effect was also independent of smoking but not independent of biological coronary risk factors--that is, serum cholesterol concentration and blood pressure. In the analysis stratified for smoking in men the body mass index total mortality curve was J shaped among non-smokers, whereas smoking entirely outweighed body mass index as a predictor of death. Body mass index did not contribute significantly to the risk of either acute myocardial infarction or death in women. It is concluded that a body mass index of around 29.0-31.0 or more is not only a marker for coronary risk factors but is also a predictor of acute myocardial infarction in men.
Data on the prevalence of arterial hypertension (AH) among female workers of a large Vladivostok ship-repair plant, between 20 and 54 years of age, are presented. AH was detected in 17.5% of the screened women. The results of follow-up screening tests, performed 3 years later, are reviewed. Marginal arterial hypertension is shown to be the principal source of AH. Aggravated cardiovascular heredity also contributes to AH. Women showed great interest in participating in preventive and therapeutic programs at the medical division of an industrial enterprise.
All drugs in a prospective series of 309 consecutive patients with cervical fractures and 300 with trochanteric fractures were recorded and compared with an age- and sex-matched randomly selected group from the city population files. A greater consumption of drugs was observed in the hip fracture group compared with the control group. Significant differences were observed for men regarding selective beta 2-adrenergic stimulants and xanthines, laxatives, phenothiazines and anti-psychotic drugs, as well as anti-glaucoma drugs. Women with hip fractures had a significantly greater consumption of diuretics, laxatives, insulin, phenothiazines and other antipsychotic drugs.
Dependence of the incidence and detectability of arterial hypertension on some risk factors was examined in middle-aged males in a three-year prospective study of a random representative sample of an organized Novosibirsk population. Age at first examination, arterial BP rise to a marginal level, excessive body weight and aggravated heredity affected considerably the detectability of recent arterial hypertension.