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  • Association of daily step count and serum testosterone among men in the United States. Endocrine Del Giudice, F., Glover, F., Belladelli, F., De Berardinis, E., Sciarra, A., Salciccia, S., Kasman, A. M., Chen, T., Eisenberg, M. L. 2021

    Abstract

    PURPOSE: To describe the association between daily activity (i.e., daily step counts and accelerometer intensity measures) and serum TT levels in a representative sample of US adults aged 18 years or older.METHODS: A retrospective cohort study was carried out utilizing the NHANES (National Health and Nutrition Examination Survey) 2003-2004 cycle. Physical activity was measured with a waist-worn uniaxial accelerometer (AM-7164; ActiGraph) for up to 7 days using a standardized protocol. Using linear and multivariable logistic regression controlling for relevant social, demographic, lifestyle, and comorbidity characteristics, we assessed the association between daily step counts and TT.RESULTS: A total of 279 subjects with a median age 46 (IQR: 33-56) were included in the analysis. 23.3% of the cohort had a low serum TT level (TT<350ng/dl). Compared to men who took <4000 steps per day, men who took >4000 or >8000 steps/day had a lower odd of being hypogonadal (OR 0.14, 95% CI: 0.07-0.49 and 0.08, 95%CI: 0.02-0.44, respectively). While a threshold effect was noted on average, TT increased 7ng/dL for each additional 1000 steps taken daily (beta-estimate: 0.007, 95% CI: 0.002-0.013).CONCLUSIONS: Patients with the lowest daily step counts had higher odds of being hypogonadal. The current work supports a possible association between daily steps, total testosterone, and hypogonadism for men in the US.

    View details for DOI 10.1007/s12020-021-02631-2

    View details for PubMedID 33580402

  • Challenges in Survey-Based Research. The journal of sexual medicine Chen, T., Eisenberg, M. L. 2020

    View details for DOI 10.1016/j.jsxm.2020.08.013

    View details for PubMedID 32943376