An adult male bodybuilder of international level, who had decided to complement his training by self-administering the androgenic hormones (actually 53 mg/day), volunteered as a subject for investigation of his physical health and fitness over a training period of 1 year including only a 4-week abstinence from drugs in the middle of the year. The subject was able to gain greatly in fat-free weight (from 83 to 90 kg), in mean fiber area of the VL muscle (enlargement of 11.4% after a half year's training), and in maximal strength (from 5145 to 5948 N). The high level of serum testosterone and low level of serum SHBG observed tend to strengthen suggestions of the anabolic effects of androgenic steroids during training. The subject's health status was affected. A high serum E2 level during the use of androgens, atrophic testicles, and low LH, FSH, and T levels after drug withdrawal indicate that sustained testosterone/anabolic steroid administration affects the function of the pituitary and leads to long-lasting impairment of testicular endocrine function, and consequently to azoospermia and cynegomastia. The observed decrease in serum HDL-cholesterol (from 1.59 to 0.44 mmol/l) and in HDL2-cholesterol (from 0.42 to 0.01 mmol/l) may indicate a higher risk for atherogenesis.
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http://dx.doi.org/10.1055/s-2008-1025808 | DOI Listing |
Orthop Surg
January 2025
Department of Orthopedic Surgery, St. Vincent's Hospital, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea.
Objective: Central sensitization (CS) is associated with quality of life (QOL) after total knee arthroplasty (TKA). However, how CS changes after TKA and whether these changes have clinical relevance remain unclear. Therefore, this study was conducted to identify changes in CS after TKA and to assess the clinical significance of these changes.
View Article and Find Full Text PDFClin Chem Lab Med
January 2025
Deparment of Laboratory Medicine, 16268 La Paz University Hospital, Madrid, Spain.
Objectives: Cardiac biomarkers are useful for the diagnostic and prognostic assessment of myocardial injury (MI) and heart failure. By measuring specific proteins released into the bloodstream during heart stress or damage, these biomarkers help clinicians detect the presence and extent of heart injury and tailor appropriate treatment plans. This study aims to provide robust biological variation (BV) data for cardiac biomarkers in athletes, specifically focusing on those applied to detect or exclude MI, such as myoglobin, creatine kinase-myocardial band (CK-MB) and cardiac troponins (cTn), and those related to heart failure and cardiac dysfunction, brain natriuretic peptide (BNP) and N-terminal brain natriuretic pro-peptide (NT-proBNP).
View Article and Find Full Text PDFJ Adolesc
January 2025
Department of Psychology, Faculty of Social Sciences, University of Macau, Macau SAR, China.
Objectives: Shift-and-persist coping strategies have been demonstrated to be beneficial for physical health of individuals in low socioeconomic status (SES); however, their impacts on psychological well-being remain less clear. This study aimed to examine: (1) whether the protective effects of shift-and-persist with respect to psychological well-being (i.e.
View Article and Find Full Text PDFEur J Sport Sci
February 2025
Department of Sport and Health Sciences and Social Work, Oxford Brookes University, Oxford, UK.
Some technical limitations to using the eccentric mode to measure peak eccentric strength of the hamstrings (PTH) were raised. PTH also has limited validity to predict performance or injury risk factor. Therefore, our aim was to compare PTH and other isokinetic variables tested in the eccentric and passive modes.
View Article and Find Full Text PDFAm J Ind Med
January 2025
Icahn School of Medicine at Mount Sinai, Selikoff Centers for Occupational Health, New York, New York, USA.
Background: Housecleaning work has been characterized as precarious employment with unstable work hours, arbitrary and low pay and benefits, and exposures to chemical, physical, and psychosocial stressors. Understanding how interpersonal power dynamics between workers and clients, a component of precarious work, contributes to work exposures can inform and improve prevention programs.
Methods: We used reflexive thematic analysis of data from seven focus groups with Latinx immigrant housecleaners in New York City to explore workers' experience of interpersonal power dynamics with their clients-whom they referred to as their "employers"-and its influences on working conditions.
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