Strength and power are next to the other conditional requirements, as well as the technical, tactical, psychological requirements, a limiting factor in team sports. Therefore, it makes sense to also train strength. The maximal strength is understood as the maximal force the neuromuscular system can produce during a maximal voluntary contraction. A high maximal power is in many sports a basis for a high level of performance. The explosive strength is the ability of the neuromuscular system to develop a maximum impulse within a given time (Schmidtbleicher, 2003).
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Early detection and monitoring of overweight and obesity in childhood has become a public health priority worldwide in the 21st century. Therefore, the aim of this study was to estimate the current prevalence and trends in overweight and obesity among 5, 10 and 14 year-olds children in Liechtenstein. The study is based on a time series of 4 cross-sectional screening examinations conducted in 2004, 2006, 2008 and 2010 and included data of 2978 children (1490 boys and 1488 girls). Body mass index (BMI) was calculated on anthropometric measurements and categorised using international as well as German cut-off criteria.
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