Finally, the ASHT-protocol does not provide details regarding enc

Finally, the ASHT-protocol does not provide details regarding encouragement. Verbal encouragement was given to stimulate children to attempt see more their very best. The content of encouragement was the same for all children, and the type and volume was kept as consistent as possible. Unfortunately, the goal of including 200 children

for each age group was not achieved in the two oldest groups, owing mainly to the fact that participation of high schools was difficult to arrange. Also, we did not systematically record exactly how many children refused to participate. However, the available data indicate that only a marginal proportion of children refused, which makes the data highly representative. Other limitations are a direct result of the exclusion criteria, meaning results can only be applied to the healthy population and cannot be extrapolated to other age groups. In summary, this study presents reference values for grip strength in children. These reference values for both the dominant and the non-dominant hand are provided graphically according

to gender and age, to facilitate comparison to patients’ values. These graphics also allow monitoring of progression over time. In addition the results of this study show that gender, age, height, and weight are strongly associated with the development of grip strength in children. Finally, detailed equations are provided to give a more precise prediction regarding U0126 molecular weight a specific patient when height and weight

are known. Ethics: The study was conducted in accordance with the regulations of the METC Institutional Review Board of the University Medical Center Groningen. Children were included in the study after permission of parents had been given. However, it was also ensured that each child knew the examination was not mandatory, and children were not included if they did not want to participate. Support: None. Competing interests: There are no competing interests. The authors thank all the children, their parents, and the schools for their contribution to this study as well as the students who aided the researchers with measurements. The authors also thank PU Dijkstra, A Shepherd, RE Stewart, Parvulin and WFA Klijn for their assistance. “
“Running is widely known to be beneficial for general health (Marti 1991, Williams 1997, Williams 2007, Williams 2008). However, one of the consequences of running is running-related injuries (RRI), with incidence rates ranging from 18.2% to 92.4% (Satterthwaite et al 1999, van Gent et al 2007, Van Middelkoop et al 2008a) or 6.8 to 59 injuries per 1000 hours of running exposure (Bovens et al 1989, Buist et al 2010, Lun et al 2004, Lysholm and Wiklander 1987, Rauh et al 2006, Wen et al 1998).

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