Lidia Mínguez-Alarcón1, Jorge E Chavarro2, Jaime Mendiola3, Audrey J Gaskins4, Alberto M Torres-Cantero5. 1. Division of Preventive Medicine and Public Health, Department of Health and Social Sciences, University of Murcia School of Medicine, Murcia, Spain. Electronic address: minguez@um.es. 2. Departments of Nutrition and Epidemiology, Harvard School of Public Health, Boston, Massachusetts; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. 3. Division of Preventive Medicine and Public Health, Department of Health and Social Sciences, University of Murcia School of Medicine, Murcia, Spain. 4. Departments of Nutrition and Epidemiology, Harvard School of Public Health, Boston, Massachusetts. 5. Division of Preventive Medicine and Public Health, Department of Health and Social Sciences, University of Murcia School of Medicine, Murcia, Spain; Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain; Department of Preventive Medicine, Reína Sofía University Hospital, Murcia, Spain.
Abstract
OBJECTIVE: To study the relationship of physical activity with semen quality among healthy young men from Spain. DESIGN: Cross-sectional study. SETTING: University and college campuses of Murcia Region, Spain. PATIENT(S): Healthy young men with untested fertility (n = 215). INTERVENTION(S): A physical examination, blood and semen samples, and completion of a questionnaire. MAIN OUTCOME MEASURE(S): Semen quality parameters. RESULT(S): Physical activity was not related to semen quality parameters. The adjusted percentage differences (95% confidence interval) in semen parameters comparing men in the top quartile of moderate-to-vigorous physical activity (≥9.5 h/wk) with men in the bottom quartile (≤3 h/wk) were 4.3% (-30.2%, 38.9%) for total sperm count, 7.2% (-30.6%, 45.1%) for sperm concentration, -2.42% (-6.53%, 1.69%) for sperm motility, and 12.6% (-12.0%, 37.2%) for sperm morphology. CONCLUSION(S): In contrast to previous research among athletes, these data suggest that physical activity is not deleterious to testicular function, as captured by semen quality parameters in this population of healthy young men in Spain.
OBJECTIVE: To study the relationship of physical activity with semen quality among healthy young men from Spain. DESIGN: Cross-sectional study. SETTING: University and college campuses of Murcia Region, Spain. PATIENT(S): Healthy young men with untested fertility (n = 215). INTERVENTION(S): A physical examination, blood and semen samples, and completion of a questionnaire. MAIN OUTCOME MEASURE(S): Semen quality parameters. RESULT(S): Physical activity was not related to semen quality parameters. The adjusted percentage differences (95% confidence interval) in semen parameters comparing men in the top quartile of moderate-to-vigorous physical activity (≥9.5 h/wk) with men in the bottom quartile (≤3 h/wk) were 4.3% (-30.2%, 38.9%) for total sperm count, 7.2% (-30.6%, 45.1%) for sperm concentration, -2.42% (-6.53%, 1.69%) for sperm motility, and 12.6% (-12.0%, 37.2%) for sperm morphology. CONCLUSION(S): In contrast to previous research among athletes, these data suggest that physical activity is not deleterious to testicular function, as captured by semen quality parameters in this population of healthy young men in Spain.
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