Prenatal androgenization (2D:4D) predictions of tennis match-play success in junior players: A search for physiological explanations.

Aim: This study aims to investigate the possible association between digit ratio (2D:4D) and match-play success (MPS) in junior tennis players. In addition, we consider the possible explanatory pathways of these associations in relation to psychological, strength, power, and hormonal parameters.

Methods: We performed a cross-sectional study, with a sample comprised of 64 male junior tennis players (11-18 years old).

Providing baseline data for conservation-Heart rate monitoring in captive scimitar-horned oryx.

Heart rate biologging has been successfully used to study wildlife responses to natural and human-caused stressors (e.g., hunting, landscape of fear).

Short-term thyroid hormone excess affects the heart but does not affect adrenal activity in rats.

Background: Hyperthyroidism (Hy) exerts a broad range of influences on a variety of physiological parameters. Its disruptive effect on cardiovascular system is one of its most remarkable impacts. Moreover, Hy has been clinically associated with stress - induced hyperactivation of the hypothalamic-pituitary-adrenal axis.