Correlation between ECG changes and early left ventricular remodeling in preadolescent footballers

The aim of this study was to assess the early electrocardiogram (ECG) changes induced by physical training in preadolescent elite footballers. This study included 94 preadolescent highly trained male footballers (FG) competing in Serbian Football League (minimum of 7 training hours/week) and 47 age-matched healthy male controls (less than 2 training hours/week) (CG). They were screened by ECG and echocardiography at a tertiary referral cardio center. Sokolow–Lyon index was used as a voltage electrocardiographic criterion for left ventricular hypertrophy diagnosis. Characteristic ECG intervals and voltage were compared and reference range was given for preadolescent footballers. Highly significant differences between FG and CG were registered in all ECG parameters: P-wave voltage (p 1–2 + R V5–6 (p  0.05). During 6-year follow-up period, there was no adverse cardiac event in these footballers. None of them expressed pathological ECG changes. Benign ECG changes are presented in the early stage of athlete’s heart remodeling, but they are not related to pathological ECG changes and they should be regarded as ECG pattern of LV remodeling

Quantifying Individual Variation in the Propensity to Attribute Incentive Salience to Reward Cues

If reward-associated cues acquire the properties of incentive stimuli they can come to powerfully control behavior, and potentially promote maladaptive behavior. Pavlovian incentive stimuli are defined as stimuli that have three fundamental properties: they are attractive, they are themselves desired, and they can spur instrumental actions. We have found, however, that there is considerable individual variation in the extent to which animals attribute Pavlovian incentive motivational properties (“incentive salience”) to reward cues. The purpose of this paper was to develop criteria for identifying and classifying individuals based on their propensity to attribute incentive salience to reward cues. To do this, we conducted a meta-analysis of a large sample of rats (N = 1,878) subjected to a classic Pavlovian conditioning procedure. We then used the propensity of animals to approach a cue predictive of reward (one index of the extent to which the cue was attributed with incentive salience), to characterize two behavioral phenotypes in this population: animals that approached the cue (“sign-trackers”) vs. others that approached the location of reward delivery (“goal-trackers”). This variation in Pavlovian approach behavior predicted other behavioral indices of the propensity to attribute incentive salience to reward cues. Thus, the procedures reported here should be useful for making comparisons across studies and for assessing individual variation in incentive salience attribution in small samples of the population, or even for classifying single animals

Blood pressure in acute ischemic stroke: Challenges in trial interpretation and clinical management: Position of the ESH Working Group on Hypertension and the Brain

Altered blood pressure (BP) is a common phenomenon in acute ischemic stroke (AIS), with high BP being the most frequent scenario. The pathophysiology of BP changes in AIS is complex and only partially understood. The available evidence indicates that extremely high BP during AIS is associated with a poor outcome. Importantly, the observed relationship between BP and stroke outcome may or may not be causally related. Higher baseline BPs in focal cerebral ischemia may indicate preexisting hypertension, but may also be an effect of both nonspecific and stroke-related factors. Although antihypertensive therapy effectively reduces BP in AIS, studies on early BP lowering in AIS produce conflicting results in terms of functional outcome and mortality. Systematic reviews on BP management in AIS did not result in clinically applicable conclusions in general. However, the investigation on the effect of BP and its alterations in AIS are hampered by various important methodological issues. This position statement was prepared by a group of experts from the European Society of Hypertension and invited neurologists to discuss the main reasons for the discrepancies in the current evidence on the prognosis and treatment of altered BP in AIS which should be taken into account in future studies. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved

Correlations between Lever Contacts, CS Food Cup Entries, Inter-trial Interval (ITI) Food Cup Entries, and the PCA Scores on Day 1 (top) and Day 5 (bottom) of Pavlovian training.

<p>Legend: Numbers indicate Pearson's correlation coefficient (r) and those that are Italicized numbers indicate statistically significant correlations (ps<0.01) are italicized. The number inside parentheses denotes the day of Pavlovian training.</p

The distribution of PCA Index Scores in a sample of 1,878 rats. STs, GTs and INs are classed according to the criteria presented in Fig. 5.

<p>It is clear, based on these criteria, that STs and GTs represent different subpopulations of animals.</p