Results 61 to 70 of about 288,451 (181)
Improving the Determination of Carbon Isotope Ratios of Endogenous Steroids Found in Human Serum
Drug Testing and Analysis, EarlyView.A method employing high‐performance liquid chromatographic sample cleanup to determine the carbon isotope ratios of steroids found in human serum was developed and fully validated. A reference population encompassing more than 120 male and female athlete samples was investigated in order to establish population‐based thresholds for Δ‐values.
Thomas Piper, Mario Thevis
wiley +1 more source
Skeletal Muscle Memory: An Update From the Antidoping Perspective
Drug Testing and Analysis, EarlyView.ABSTRACT This narrative review explores the concept of muscle memory, focusing on the physiological and biochemical mechanisms underlying information retention in skeletal muscle tissue as it relates to antidoping. The discussion encompasses the role of satellite cells (SCs) in myonuclei recruitment, resulting in increased myonuclear density and ...
Claire Traversa
wiley +1 more source
TESTOSTERONE AND AGGRESSION [PDF]
Journal of Offender Rehabilitation, 1994 The evolutionary context of a possible link between testosterone and human aggressiveness is outlined. Age and sex differences in the two variables parallel one another, but are confounded by other influences. Studies comparing aggressive and non-aggressive groups (e.g., violent prisoners) show higher testosterone levels in the former.
openaire +2 more sources
Drug Testing and Analysis, EarlyView.β‐hydroxy β‐methyl butyric acid (HMB), either as the free acid or in the form of its calcium salt, is a component of several dietary supplements marketed to enhance sports performance. We investigated the urinary excretion profile of HMB, also assessing the endogenous reference ranges of HMB in human urine samples from healthy volunteers (n = 20). Data
Cristian Camuto +3 more
wiley +1 more source
Drug Testing and Analysis, EarlyView.An LC–MS/MS method was developed and validated to detect 12 synthetic or endogenous hormonal growth promotants commonly utilized in the livestock industry in the United States at low pg/mg concentrations. ABSTRACT Hormonal growth promotants (HGPs) are a class of pharmaceutical agents commonly administered to cattle in the United States to improve ...
Mary Mosburg +7 more
wiley +1 more source
Drug Testing and Analysis, EarlyView.Scenarios of drug exposure and administration as well as detection assays for drugs and methods of sports doping published between 2023 and 2024 are critically reviewed and evaluated in context with the Prohibited List 2024 as established by the World Anti‐Doping Agency.
Mario Thevis +2 more
wiley +1 more source
The effects of androgen therapy on the endometrium of transgender men [PDF]
, 2017 Individuals who identify themselves as transgender have gender identities that do not match their anatomical sex. Females who identify as male, also known as female-to-male transgender (FTM), may opt to undergo hormonal and surgical treatment in order to
Shah, Anita
core
Novas perspectivas no diagnóstico do hipogonadismo pediátrico masculino: a importância do AMH como marcador de células de Sertoli [PDF]
, 2011 Sertoli cells are the most active cell population in the testis during infancy and childhood. In these periods of life, hypogonadism can only be evidenced without stimulation tests, if Sertoli cell function is assessed.
Grinspon, Romina, Rey, Rodolfo Alberto
core +2 more sources