notch2, notch4 gene polymorphisms in psoriasis vulgaris.

Background: Evidence suggests that Notch gene aberrations may be involved in the clinical expression of psoriasis. There are reports of Notch2 receptor expression peculiarities in psoriatic skin and others, indicating that VEGF-induced Notch4 overexpression promotes endothelial cell morphology alterations and that increased dermis vessel permeability histogenetically precedes the development of psoriatic lesions.

Objective: To investigate the correlation of polymorphisms in Notch2 and Notch4 genes with the appearance of psoriasis vulgaris.

Apolipoprotein E gene polymorphism in psoriasis.

Polymorphism in the apolipoprotein E gene has been associated with several neurological, cardiological and ophthalmological diseases. Apolipoprotein E is involved in psoriasis by modifying mitogen-activated T lymphocyte proliferation and by assuring protection against some infections. We evaluated the apolipoprotein E gene polymorphism in patients suffering from psoriasis (compared to matched controls) in Thrace, Northern Greece.

Postactivation potentiation effects after heavy resistance exercise on running speed.

The purpose of this study was to investigate the postactivation potentiation effect after a heavy resistance stimulus (HRS) on running speed (RS). Fifteen amateur team game players (basketball, volleyball, handball, and soccer players), ages 18-23 years running the 30-m dash and the intermediate phase of 0-10 and 0-30 m sprints, were used to evaluate RS. Resistance training consisted of 10 single repetitions at 90% of 1 repetition maximum.

The effect of a combined high-intensity strength and speed training program on the running and jumping ability of soccer players.

The purpose of this study was to investigate the effect of a combined heavy-resistance and running-speed training program performed in the same training session on strength, running velocity (RV), and vertical-jump performance (VJ) of soccer players. Thirty-five individuals were divided into 3 groups. The first group (n = 12, COM group) performed a combined resistance and speed training program at the same training session, and the second one (n = 11, STR group) performed the same resistance training without speed training.