HEPA Europe, the European network for the promotion of health-enhancing physical activity, will have its 10th annual meeting in 2014. Membership of the network has grown to 129 institutions from 32 countries. Collaborations have been established with the World Health Organization (WHO), the European Union (EU), Agita Mundo, the global network for physical activity promotion, other regional networks, and the International Society for Physical Activity and Health. Physical activity has moved up on the public agenda; in 2013 the EU Council adopted its first ever Council Recommendation in sport, notably on promoting health-enhancing physical activity, and in 2014 WHO has begun the development of a Physical Activity Strategy for the European region.
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There are different devices on the market for assessing strength and power in vertical jumping as a fundamental requisite of an athlete’s performance. The purpose of this study was to assess the reliability and validity of two instruments measuring force, power, velocity, and jump height in squat jumps. Myotest® (MYO) (Myotest SA, Switzerland) was compared with force plate measurements (Quattro Jump® [QUATTRO], Kistler, Switzerland & SPSport Software, Trins, Austria). Forty-three frontier-guards (age range 25–58 years) performed twice a series of five squat jumps (SJ) simultaneously using MYO device along with QUATTRO force plate. Reliability was analysed using ICC, CV and RMSE. Results for reliability for both devices show good results with ICCs ranging from 0.910 to 0.955, and CVs ranging from 2.33% to 6.59% for discrete outcome variables.
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There is a substantial lack of research comparing the effects of game console-based activities against conventional activities (aerobic, bicycle ergometer) within therapeutic and rehabilitative settings and the results are inconsistent. The aim of the study was to investigate if training with exergames (Nintendo Wii vs. Xbox 360) compared with conventional activities (bicycle ergometer) would have different effects on physiological and psychological parameters. Method: A quantitative three-armed, randomised, not-blinded study design was used. The test persons were randomly assigned to one of three activities: 1) Bicycle ergometer (n = 6); 2. Nintendo Wii game (n = 16); 3. Xbox 360 game (n = 17).
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Quantifying actual individual training intensity in resistance training is essential for athletes and trainers, but is at present only possible with methodological problems. Thus, the purpose of this article is to examine the relationship of different types of RPE (rating of perceived exertion) with blood lactate concentrations in hypertrophy training. Hereby it is possible, to deduce conclusions about the validity of the RPE-scale and different times of monitoring. In this article two studies with male subjects are presented (study 1: n=10, 23.7 ± 2.8 years; study 2: n=16, 24.9 ± 2.0 years). In both surveys, subjects had to complete 3 sets with 3 minutes of rest between sets in every exercise. Blood lactate was measured before each exercise and two minutes after the completion of each set.
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The aim of the study was the evaluation of the correlation between maximal strength and muscle mass depending on the kind of analysis which was used. Two different methods of strength evaluation and several morphological parameters were used. 77 male participants (age: 27,2 ± 6,6 years; body height: 179,9 ± 4,0 cm; body weight: 82,5 ± 10,4 kg) joined the study. Maximal strength was tested by measuring the isometric force (MIF) and analysing the one repetition maximum (1RM). The morphological data was captured by magnetic resonance imaging. The volume of the muscle (VOL), the biggest cross sectional area (QSMAX), the cross sectional area of the upper (QS30), middle (QS60) and lower (QS90) third of the scanned area of the arm flexors were examined.
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Strength training guidelines tend to be based on stress factors such as relative weight, repetitions, sets, rest inbetween sets, muscle action velocity and number of sessions per week. Based on the stress-strain-concept, empirical results and training experience require additional parameters related to the molecular and cellular adaptations for an effective strength training concept. In contrast to what has generally been assumed, it is notable that the individual percentage of 1-Repetition-Maximum (1 RM) is not the intensity but only a relative training load and therefore a stress factor. Intensity is referred to here as a strain factor, operationalized as the level of effort applied to a given load.
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In the science and practice of strength training it is sometimes suggested that the deep squat entails an increased injury risk of the lumbar spine and the knee joint. Avoiding deep flexion is believed to minimize the magnitude of knee joint forces. Because within the first 50° of knee flexion calculated retropatellar compressive stress is lower, execution of quarter or half squats is recommended when overuse injuries and degenerative changes of the patella-tendon-complex exist.
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Problems: Correlations between the occlusal situation and the movement apparatus are currently controversially discussed in literature. However, studies with athletes are missing in this area. Therefore the question arises, whether a systematic block of the occlusion by a silicone panel shows effects on the postural control in athletes. Methods: In this study 16 male volunteers of a team of 1. Handball league were investigated. With the help of 1 or 2 mm thick silicon panel their occlusion was blocked symmetrical and asymmetrical. The effects in terms of their postural control were recorded on a force plate (GP Multisens, GeBioM, Münster/Germany).
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Strength training has numerous positive effects on fitness, health, and physical performance. In terms of Evidenced Based Training, however, there is a scientific lack of facts regarding the efficiency of different physical criteria and training methodology. By means of a meta-analysis including 45 primary studies and a total num ber of 1712 participants, 203 effect sizes in pre-post design were identi-fied regarding the variation of maximum strength. The effect sizes found differed depending on individual preconditions, such as train ing status, gender, age, and methodological variables like du-ration of study, total training frequency, training parameters, etc.
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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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