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Abstract Title:

Is Sedentary Lifestyle Associated With Testicular Function? A Cross-Sectional Study of 1,210 Men.

Abstract Source:

Am J Epidemiol. 2016 Aug 8. Epub 2016 Aug 8. PMID: 27501721

Abstract Author(s):

Lærke Priskorn, Tina Kold Jensen, Anne Kirstine Bang, Loa Nordkap, Ulla Nordström Joensen, Tina Harmer Lassen, Inge Ahlmann Olesen, Shanna H Swan, Niels E Skakkebaek, Niels Jørgensen

Article Affiliation:

Lærke Priskorn

Abstract:

Based on cross-sectional data on 1,210 healthy young Danish men, we investigated whether sedentary lifestyle was associated with testicular function (semen quality and reproductive hormones) independent of physical activity. The men were invited to participate in the study between 2008 and 2012, when they attended a compulsory medical examination to determine their fitness for military service. Information on sedentary behavior (television watching and computer time) and physical activity was obtained by questionnaire. The men had a physical examination, delivered a semen sample, and had a blood sample drawn. Time spent watching television, but not time sitting in front of a computer, was associated with lower sperm counts. Men who watched television more than 5 hours/day had an adjusted sperm concentration of 37 million/mL (95% confidence interval (CI): 30, 44) versus 52 million/mL (95% CI: 43, 62) among men who did not watch television; total sperm counts in those 2 groups were 104 million (95% CI: 84, 126) and 158 million (95% CI: 130, 189), respectively. Furthermore, an increase in follicle-stimulating hormone and decreases in testosterone and the testosterone/luteinizing hormone ratio were detected in men watching many hours of television. Self-rated physical fitness, but not time spent on physical activity, was positively associated with sperm counts.

Study Type : Human Study

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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