Effects of running a marathon on irisin concentration in men aged over 50.

Our aim was to verify whether running a marathon is associated with changes in irisin concentration in healthy, endurance-trained men. In an observational study, we assessed baseline biochemical and fitness parameters of 28 middle-aged runners (mean ± SD age, BMI, VO: 58 ± 8 years; 24.5 ± 3 kg/m; 51.

The Central Effects of Androgenic-anabolic Steroid Use.

: Millions of men use androgenic-anabolic steroids (AAS) to stimulate muscle growth and improve physical appearance. Although 1 out of 3 people who uses androgenic-anabolic steroids develops a steroid use disorder, the effects of the drugs on the central nervous system and the psyche are still not well understood. Although most addictive substances improve mood immediately after administration, AAS exert less pronounced euphoric effects.

The quality of semen among a sample of young, healthy men from Lower Silesia (AndroLS).

Introduction: Contrary to other parts of the continent, little information is available regarding semen quality among subjects from central and eastern Europe.

Material And Methods: We evaluated semen profiles among a sample of men from an industrialised region of Poland. We directly invited 5000 healthy inhabitants of the region (aged 18-35 years; with unchecked fecundity) to participate in the study.

Trends in the prevalence of autoimmune thyroiditis in the leading private health-care provider in Poland.

Background: Autoimmune thyroiditis (AT) is one of the most common endocrine disorders affecting a significant percent of the population, especially women. It may have serious and long-lasting consequences. The etiology of AT is multifactorial and it arises from an interplas between environmental and genetic factors.

Associations between physical activity and semen quality in young healthy men.

Objective: To evaluate whether the level of everyday physical activity is associated with semen quality in young men.

Design: Cross-sectional study.

Setting: Universities, clubs, and societies.