Comparisons are made between commercial packet-switching applications and the unique Amateur radio environment. Suggestions for enhancing the AX.25 Level TWO

BACKGROUND There has been a noted increase in the diagnosis and reporting of sporting hip injuries and conditions in the medical literature but reporting at the minor hockey level is unknown. The purpose of this study is to investigate the trend of reporting hip injuries in amateur ice hockey players in Canada with a focus on injury type and mechanism. METHODS A retrospective review of the Ho...

Abstract Amateur butterfly and moth collectors in the United States have procured more Lepidoptera specimens than professional scientists. The advent of large government-supported database efforts has made a quantitative examination impact amateur collecting these insects possible. We reviewed trends since 1800, using 1 million lepidopteran that been collected into public databases. Our finding...

conclusions amateur motocross riders had significant anaerobic metabolism demands and had reduced handgrip strength following a training session. these data suggest an importance of physical training aimed at improving anaerobic and neuromuscular performance of the upper limbs in amateur motocross riders. background motocross is one of the most popular motorized off-road sports, characterized b...

BACKGROUND The aim of this study was to examine the feasibility of performing a cohort study on health risks from occupational exposure to radiofrequency electromagnetic fields (RF-EMF) in Germany. METHODS A set of criteria was developed to evaluate the feasibility of such a cohort study. The criteria aimed at conditions of exposure and exposure assessment (level, duration, preferably on an i...

BACKGROUND In Switzerland, the national accident insurance company registered a total of 42 262 soccer injuries, resulting in costs of approximately 145 million Swiss francs (~US$130 million) in 2003. Research on injury prevention has shown that exercise-based programs can reduce the incidence of soccer injuries. PURPOSE This study was conducted to assess the implementation and effects of a c...

OBJECTIVE To determine the prevalence of asthma symptoms and of airflow obstruction in amateur swimmers between 8 and 17 years of age, as well as to assess the awareness of asthma and asthma management among these swimmers, their parents, and their coaches. METHODS Our sample comprised 1,116 amateur swimmers who completed a modified version of the International Study of Asthma and Allergies i...