This study examined the change in countermovement jump (CMJ) performance across a microcycle of training in professional soccer players during the in-season period. Nine elite youth soccer players performed a CMJ test before and after 4 consecutive soccer training sessions of an in-season weekly microcycle. Training load was quantified using global positioning systems, heart rate, and rating of...

Observers were presented with various types of stimulus expansion and contraction which resulted in marked misperceptions of size. Firstly, the perceived size of an object which is changing in size is shown to be biased in the direction of the size change. Secondly, expansion or contraction of the internal texture of objects is found to influence their perceived size. Finally, an illusory textu...

OBJECTIVES   To evaluate differences in students' performance in a dental morphology course after the introduction of a 3D software-teaching program.  Methods: This retrospective study took place at the College of Dentistry, University of Dammam, Dammam, Kingdom of Saudi Arabia, from Augst 2013 to January 2016. The study included 3 groups of students taking the course during 3 different academi...

in this experiment, physical and chemical characteristics and estimation of effective fiber and digestibility of some agricultural by-products such as lerd, pulp and date kernel, grape pomace, pistachio hulls, lime and rice straw were determined by using in vitro technique. experimental data were analyzed as a complete randomized design, with three replicates. physical and chemical characterist...

Aerosol solvent extraction system (ASES) was used to prepare micro-particle of acetaminophen by supercritical carbon dioxide as an anti-solvent. Experiment was carried out at various temperatures, pressures, solvents and investigated the effects of these parameters on particle size, size distribution and morphology by SEM and laser diffraction particle size analyzer. It seems that the choice of...

A cross-sectional study was undertaken to identify the prevalence of malaria infection, behavioral patterns of inhabitants and risk factors for malaria infection in a minority village in an area endemic for malaria in Vietnam. The target population were all the inhabitants of a village in Binh Phuoc Province, Vietnam. Interviews using a structured questionnaire and blood examination for malaria...

Population surveys are a key component of the relevant activities for public health. There is growing interest in identifying behavioral aspects which influence individual and collective health, such as physical activity (PA). The aim of this study is to present PA data from the 2008 Brazilian National Household Survey (PNAD) according to regional distribution and the socio-demographic characte...

H seen what is a “sample”, what are the characteristics of a good sample and how to go about constructing it (probability and nonprobability methods), l e t u s n o w u n d e r s t a n d t h e principles of determining what is an “appropriate size” for the sample and how to calculate it for diverse study designs. We also discuss what can go wrong and what precautions you must exert while calcul...