The prediction of gas chromatographic relative retention times (RRTs) of anabolic steroids, used in the doping control of athletes, was performed by a quantitative structure-retention relationship (QSRR) and multiple linear regression analysis study. A nine-variable model was generated with a multiple correlation coefficient R = 0.991 and relative standard error of less than 3%. Preliminary results indicated that the application of the model, especially in the prediction of RRTs of metabolites of the anabolic steroids, will be helpful.
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http://dx.doi.org/10.1021/ac00018a024 | DOI Listing |
Am J Sports Med
January 2025
Rothman Orthopaedic Institute, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA.
Background: Distal triceps tendon injuries are relatively rare injuries, often occurring in highly active patients with physically demanding jobs or lifestyles. Information on return to work, sport, and activity is essential for patient education and counseling after a distal triceps tendon rupture.
Purpose: To determine the rates of return to work, sport, and sport-related activity after distal triceps tendon repair.
Front Psychol
December 2024
School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom.
[This corrects the article DOI: 10.3389/fpsyg.2024.
View Article and Find Full Text PDFSteroids
December 2024
School of Health Sciences, Ariel University, Israel. Electronic address:
Purpose: This study examined the effect of resistance training (RT) by itself and in combination with supraphysiological administration of nandrolone decanoate (ND) on the inflammatory, apoptotic, and oxidative stress response in cardiac tissue. The effect of the training and androgen intervention on adiponectin expression, a potential cardio protectant was also examined.
Methods: Forty male C57Bl/6J mice, 3 months of age were randomized into four groups (n = 10 per group).
Steroids
December 2024
Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil. Electronic address:
Introduction: The use of anabolic steroids is widely adopted for aesthetic purposes and sports performance. In supraphysiological doses, they can impair various physiological systems. However, we know little about their effects on the heart, especially when combined with strength training.
View Article and Find Full Text PDFDrug Test Anal
December 2024
Catalonian Antidoping Laboratory, Doping Control Research Group, Hospital del Mar Research Institute, Barcelona, Spain.
The detection of endogenous anabolic androgenic steroids misuse in Asian population using the Steroidal Module of the Athlete Biological Passport (ABP) is a challenge due to the high prevalence of UGT2B17 gene deletion polymorphism with low levels of testosterone (T) glucuronide. In this study, the capabilities of different approaches based on urine analysis for the detection of oral T undecanoate administration were evaluated in 13 Asian volunteers, including 11 subjects with del/del genotype and 2 subjects with del/ins genotype. In the first part of the work, the effect on the urinary steroid profile (SP) and on the isotope ratio mass spectrometry markers was evaluated.
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