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M P Schuijt, C G J Sweep, R van der Steen, A J Olthaar, N M M L Stikkelbroeck, H A Ross and A E van Herwaarden

hormone-binding globulin (SHBG) or weakly bound to albumin, orosomucoid and corticosteroid-binding globulin ( 2 ). Only 1–4% circulates as free testosterone, which is considered to be the biologically active component ( 2 , 3 ). Determination of free

Open access

Lawrence D Hayes, Peter Herbert, Nicholas F Sculthorpe and Fergal M Grace

was increased, which rendered bioavailable testosterone (bio-T) and free testosterone (free-T) unaltered compared to pre-training. High-intensity interval training (HIIT) uses small volumes of exercise to bring about disproportionate increases in

Open access

P Herbert, LD Hayes, NF Sculthorpe and FM Grace

have primarily relied on associative data from epidemiological studies ( 15 , 16 , 17 ). More recently, our group reported increased total testosterone (TT), but not free testosterone (free-T), in sedentary older men following six-week moderate

Open access

Qiu-ming Yao, Bin Wang, Xiao-fei An, Jin-an Zhang and Liumei Ding

testosterone level when compared with non-diabetic individuals ( 7 ). However, evidence is less convincing and somewhat controversial for the impact of testosterone on T2DM risk among men. The study by Lakshman and coworkers reported that free testosterone

Open access

Ladan Younesi, Zeinab Safarpour Lima, Azadeh Akbari Sene, Zahra Hosseini Jebelli and Ghazaleh Amjad

ultrasonography (TVU) was performed in early follicular phase (between two and five cycles), and then the patients were tested for serum levels of luteinizing hormones, FSH, prolactin (PRL), estradiol, free testosterone, 17α-hydroxyprogesterone (17-OHP) and DHEAS

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Mikkel Andreassen, Anders Juul, Ulla Feldt-Rasmussen and Niels Jørgensen

interassay CVs 15 and 18%. Free testosterone (cfT) was calculated assuming a fixed albumin value of 43.0 g/L using the calculation suggested by Vermeulen et al . ( 19 ). Statistics Descriptive statistics were used to summarize the subject

Open access

Morten Ruge, Tea Skaaby, Anna-Maria Andersson and Allan Linneberg

), total testosterone (tT), free testosterone (fT) and bioavailable testosterone (bT) with self-reported tiredness/fatigue and sleeplessness as well as self-reported total hours of sleep per day in 2095 males from a population-based sample. Methods

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Angela Köninger, Philippos Edimiris, Laura Koch, Antje Enekwe, Claudia Lamina, Sabine Kasimir-Bauer, Rainer Kimmig and Hans Dieplinger

cases of amenorrhea. Free testosterone index (FTI) was calculated using the formula: (total testosterone/SHBG)×100. BMI was calculated as weight/(height) 2 . In cases of elevated 17-hydroxyprogesterone, an ACTH test was performed. Cases with confirmed 21

Open access

Signe Frøssing, Malin Nylander, Caroline Kistorp, Sven O Skouby and Jens Faber

testosterone was analyzed with mass spectroscopy (Waters UPLC-TQS LC–MS/MS system, Milford, USA), inter-assay CV 10%. Free testosterone was calculated from total testosterone and sex hormone binding globulin (SHBG). SHBG was analyzed with a sandwich

Open access

M Jensterle, A Podbregar, K Goricar, N Gregoric and A Janez

4.0% and 1.8 to 4.3%. Calculated free testosterone (cFT) and bioavailable testosterone were derived from the calculator at http://www.issam.ch/freetesto.htm (accessed 7/10/2018) ( 17 ). Assessment of anthropometric parameters Height, weight