Differences in Anthropometric Parameters, Physical Fitness, and Kicking Speed in Young Football Players According to Performance Level, Playing Position, and Relative Age Effect: A Population-Based Study.

Oddsson, HR, Friðgeirsdóttir, KÝ, Hafliðadóttir, L, Einarsson, IÞ, Kristjánsdóttir, H, and Saavedra, JM. Differences in anthropometric parameters, physical fitness, and kicking speed in young football players according to performance level, playing position, and relative age effect: a population-based study. J Strength Cond Res XX(X): 000-000, 2024-The objectives of this study were to determine (a) the differences, both in male and female players, in anthropometric parameters, physical fitness, and kicking speed based on the players' level and position on the field; (b) whether there is a relative age effect based on the players' level, and (c) whether there is a relationship between the relative age effect and the anthropometric parameters, physical fitness, and kicking speed parameters.

Long-term Outcome of Implantable Cardioverter/Defibrillator Lead Failure.

This study compares outcomes of a recalled implantable cardioverter/defibrillator lead with a control lead in individuals in Iceland.

Thirty-year electrocardiographic follow-up after repair of tetralogy of Fallot or atrial septal defect.

Background And Purpose: Knowledge about long-term electrocardiographic changes after surgery for congenital heart disease is limited.

Methods: Eleven patients with corrected tetralogy of Fallot (ToF) and 14 with corrected atrial septal defect (ASD) were followed up at 20 and 30 years after surgery.

Results: Approximately 50% of the ASD group developed prolonged QRS duration.

Episodes of atrial fibrillation and atrial vulnerability after successful radiofrequency catheter ablation in patients with Wolff-Parkinson-White syndrome.

Unlabelled: Episodes of atrial fibrillation occur in patients with WPW syndrome but frequently disappear after successful radiofrequency ablation.

Aims: To analyze the incidence of atrial fibrillation before and after successful ablation and the presence of increased atrial vulnerability.

Methods And Results: Fifty-four of 183 WPW patients had at least one documented episode of atrial fibrillation before ablation.

Perception and documentation of arrhythmias after successful radiofrequency catheter ablation of accessory pathways.

Background: Some patients continue to have palpitations in spite of successful ablation of Wolff-Parkinson-White (WPW) syndrome. Recurrence of accessory pathways as well as unrelated arrhythmias may explain the symptoms.

Methods: We followed 194 consecutive patients after successful radiofrequency catheter ablation of overt (147) or concealed (47) WPW syndrome.

Quality of life 20 and 30 years after surgery in patients operated on for tetralogy of Fallot and for atrial septal defect.

Follow-up studies on patients operated on for congenital heart defects have shown good anatomical results and long-term survival. To date, there have been few studies on such patients with regard to long-term psychosocial outcome and quality of life. In this study, two cohorts of patients operated on before the age of 15 years, one for tetralogy of Fallot (TOF) and the other for atrial septal defect (ASD), were investigated 20 and 30 years after operation regarding quality of life.

An unusual cause of high threshold values at pacemaker implantation.

An 81-year old man with third-degree AV block and weakness underwent an unsuccessful attempt to DDD pacemaker implant caused by hypothyroidism. Administration of thyroxin until he was euthyroid permitted implantation with normal stimulation thresholds.

Mortality and cancer incidence among marine engineers and machinists in Iceland.

A retrospective cohort study of mortality and cancer morbidity was carried out among 295 marine engineers and 182 machinists with special regard to cancer of the lung. The cohort was defined as all graduates from engineering and machinists school in Iceland during 1936-1955. During vocational training, as well as in their professional lives, marine engineers and machinists are exposed to asbestos, different kinds of mineral oils, and exhaust gases with marked individual variation as regards mode and magnitude of exposure.