scholarly journals Resting spontaneous baroreflex sensitivity and cardiac autonomic control in anabolic androgenic steroid users

Clinics ◽  
2018 ◽  
Vol 73 ◽  
Author(s):  
MR Santos ◽  
AL Sayegh ◽  
R Armani ◽  
V Costa-Hong ◽  
FR Souza ◽  
...  
1990 ◽  
Author(s):  
C. E. Yesalis ◽  
J. R. Vicary ◽  
W. E. Buckley ◽  
A. L. Streit

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Alexander Kolliari-Turner ◽  
Brian Oliver ◽  
Giscard Lima ◽  
John P. Mills ◽  
Guan Wang ◽  
...  

Abstract Background The pervasiveness of doping and findings of anti-doping corruption threaten weightlifting’s position at the 2024 Olympic Games. Analysing the practices of doping in weightlifters could identify patterns in doping that assist in future detection. Methods We analysed publicly available data on sanctioned athletes/support personnel from the International Weightlifting Federation between 2008 and 2019 and announced retrospective Anti-Doping Rule Violations (ADRVs) from the 2008 and 2012 Olympic Games. Results There were 565 sanctions between 2008 and 2019 of which 82% related to the detection of exogenous Anabolic Androgenic Steroid (AAS) metabolites and markers indicating endogenous AAS usage. The detection of exogenous AAS metabolites, markers of endogenous AAS usage and other substance metabolites varied by IWF Continental Federation (p ≤ 0.05) with Europe (74%, 11%, 15%) and Asia (70%, 15%, 15%) showing a higher detection of exogenous AAS compared to Pan America (37%, 30%, 33%) and Africa (50%, 17%, 33%). When looking at the 10 most detected substances, the nations with the highest number of sanctions (range 17–35) all had at least one overrepresented substance that accounted for 38–60% of all detected substances. The targeted re-analysis of samples from the 2008 and 2012 Olympic Games due to the discovery of long-term metabolites for exogenous AAS resulted in 61 weightlifters producing retrospective ADRVs. This includes 34 original medallists (9 gold, 10 silver and 15 bronze), the highest of any sport identified by Olympic Games sample re-testing. The exogenous AAS dehydrochloromethyltestosterone and stanozolol accounted for 83% of detected substances and were present in 95% of these samples. Conclusion Based on these findings of regional differences in doping practices, weightlifting would benefit from the targeted testing of certain regions and continuing investment in long-term sample storage as the sensitivity and specificity of detection continues to improve.


2017 ◽  
Vol 24 (9) ◽  
pp. 1210-1220 ◽  
Author(s):  
Marc Harris ◽  
Michael Dunn ◽  
Tina Alwyn

An estimated 293,000 people living in the United Kingdom have used anabolic-androgenic steroids. However, there is currently no intervention to reduce usage available in practice or academic circulation throughout the United Kingdom. This study aimed to test a novel hypothesis that increased levels of intrasexual competition may play an important influential role in the use of anabolic-androgenic steroids. Significantly higher levels of intrasexual competition were evident in users compared to non-users but only in the novice group (0–2 years of experience). The research provides evidence for intrasexual competition potentially influencing anabolic-androgenic steroid use but only during the initial stages of usage.


2014 ◽  
Vol 94 (2) ◽  
pp. 237
Author(s):  
Harrison G. Pope ◽  
Gen Kanayama ◽  
James I. Hudson ◽  
James DeLuca ◽  
Stephanie Isaacs ◽  
...  

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Terrence J. Lee ◽  
Andrea F. Zanello ◽  
Thomas R. Morrison ◽  
Lesley A. Ricci ◽  
Richard H. Melloni

2021 ◽  
Author(s):  
Francesca Perego ◽  
Beatrice De Maria ◽  
Giuseppina Cassetti ◽  
Monica Parati ◽  
Vlasta Bari ◽  
...  

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