Results 61 to 70 of about 22,538 (253)

Current Approaches to Support Patients to Withdraw From Image and Performance Enhancing Drugs

Clinical Endocrinology, EarlyView.
ABSTRACT Image and performance‐enhancing drugs (IPEDs) include agents such as androgens, growth hormone, and erythropoietin, which are used to enhance appearance and physical performance. Androgens, also known as anabolic‐androgenic steroids (AAS), are the most used IPEDs worldwide.
Elizabeth Hyams, Bonnie Grant, Richard Quinton, Channa N. Jayasena   +3 more
wiley   +1 more source

Merging Biocatalysis and Chemocatalysis in Flow: State‐of‐the‐Art and Future Directions for Sustainable Synthesis

Angewandte Chemie, Volume 138, Issue 25, 15 June 2026.
This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis, Matteo Damian, Francesco G. Mutti   +2 more
wiley   +2 more sources

Illicit anabolic–androgenic steroid use [PDF]

Hormones and Behavior, 2010
The anabolic-androgenic steroids (AAS) are a family of hormones that includes testosterone and its derivatives. These substances have been used by elite athletes since the 1950s, but they did not become widespread drugs of abuse in the general population until the 1980s.
Gen, Kanayama, James I, Hudson, Harrison G, Pope   +2 more
openaire   +2 more sources

A Systematic Review and Meta‐Analysis of Biological Sex Differences in Sleep Spindles and Slow Wave Activity in Adults With and Without Insomnia

Journal of Sleep Research, EarlyView.
ABSTRACT Mounting evidence shows sex‐based differences in sleep experiences and outcomes, including the prevalence of insomnia disorder. However, the impact of biological sex on brain oscillations during sleep remains poorly understood, especially in the context of insomnia disorder. This is a notable gap, given that neurophysiological aspects of sleep
Nyissa A. Walsh, Emma‐Maria Phillips, Arsenio Páez, Nathan E. Cross, Thien Thanh Dang‐Vu, Aurore A. Perrault   +5 more
wiley   +1 more source

Impaired vascular function among young users of anabolic–androgenic steroids

Scientific Reports
Supraphysiological doses of anabolic–androgenic steroids (AAS) is popular among recreational weightlifters and bodybuilders due to the performance-enhancing properties but is also associated with adverse cardiovascular effects.
Helene Melsom Tungesvik, Astrid Bjørnebekk, Jonny Hisdal   +2 more
doaj   +1 more source

The Effects of Trenbolone Supplementation on The Extremity Bones in Running Rats

Türk Spor ve Egzersiz Dergisi, 2019
Anabolic steroids are testosterone derivatives through which anabolic effects are maintained and androgenic effects are minimized. The use of ergogenic agents is increasing among athletes for doping in order to increase physical performance and change ...
Ali Sarı, Sefa Lök
doaj   +1 more source

Structural brain characteristics of anabolic–androgenic steroid dependence in men

Addiction, 2019
Aim To identify differences in brain morphology between dependent and non‐dependent male anabolic–androgenic steroid (AAS) users. Design This study used cross‐sectional data from a longitudinal study on male weightlifters.
L. Hauger, L. Westlye, A. Fjell, K. Walhovd, A. Bjørnebekk   +4 more
semanticscholar   +1 more source

Endocrine and androgenic response to altitude training in professional cyclists

The Journal of Physiology, EarlyView.
Abstract figure legend Steroidal and endocrine variables are altered during altitude training. Abstract This study investigated endocrine and steroidal blood markers in 31 male elite cyclists monitored over 7 weeks, including a 3 week altitude training camp either at 2050 m (n = 19) or 3000 m (n = 12).
Raphael Faiss, Bastien Krumm, Claes Cubel, Magnus Bak Klaris, Lasse Vestli Baekken, Yvette Dehnes, Jenna Goodrum, Geoff Miller, James Spragg, Martin Faulhaber, Francesco Botrè, Carsten Lundby   +11 more
wiley   +1 more source

Brain connectivity aberrations in anabolic-androgenic steroid users

NeuroImage: Clinical, 2017
Sustained anabolic-androgenic steroid (AAS) use has adverse behavioral consequences, including aggression, violence and impulsivity. Candidate mechanisms include disruptions of brain networks with high concentrations of androgen receptors and critically ...
Lars T. Westlye, Tobias Kaufmann, Dag Alnæs, Ingunn R. Hullstein, Astrid Bjørnebekk   +4 more
doaj   +1 more source

Supraphysiologic-dose anabolic-androgenic steroid use: a risk factor for dementia?

Neuroscience and Biobehavioral Reviews, 2019
Graphical abstract Supraphysiologic‐dose anabolic‐androgenic steroid use, which typically commences by the mid‐20s, induces early‐onset hypogonadism and excess oxidative stress. In turn, these abnormalities alter the function of many proteins involved in
M. Kaufman, G. Kanayama, J. Hudson, H. Pope   +3 more
semanticscholar   +1 more source