title: Bicycle riding: impact on lower urinary tract symptoms and erectile function in healthy men.
abstract: OBJECTIVE
  Recently, reports in the mass media have implicated that bicycle riding increases the risk of erectile dysfunction and prostatic diseases. So, we evaluate the impact of bicycle riding on erectile function and lower urinary tract symptoms (LUTS) in healthy general men.
  
  
  METHODS
  From 26 June 2010 to 20 July 2010, we investigate degree of LUTS (voiding and storage symptoms), using International Continence Society-male Questionnaire (ICS-mQ) and erectile function using International Index of Erectile Function-5 Questionnaire (IIEF-5) in 5 work places (personnel of public office, hospital, university, etc.) of which bicycle riding club members were doing active club activities. Respondents, who participated in club activities for 6 months and longer, were classified as the bicycle club (142 men; age, 44.02±8.56). Ones who do not ride bicycles were classified as the control group (83 men; age, 42.13±7.85). People who were having the history of urological and other chronic diseases (diabetes, vascular disease, heart disease, etc) were excluded from both groups.
  
  
  RESULTS
  Bicycle club is not significantly associated with increased prevalence of LUTS (bicycle club, 2.1 to 57.7% control, 4.8 to 73.5%) and erectile dysfunction (bicycle club, 46.1% control, 55.4%). The total mean score (storage/voiding/erectile function) of bicycle club (13.93±1.95/11.14±3.49/20.46±5.30) were not significantly different from control (14.35±2.49/11.52±3.38/20.40±4.07) (P=0.190 to 0.968).
  
  
  CONCLUSIONS
  These results suggested that bicycle riding as exercise or hobby has no negative effect on LUTS and erectile function in healthy general men, although this research data were limited to the questionnaire analysis.
authors.affiliation: Department of Pubic Health, Kyungpook National University School of Medicine, Daegu, Korea.
authors.forename: Seok
authors.initials: S
authors.lastname: Baek
authors.forename: Sun Young
authors.initials: SY
authors.lastname: Lee
authors.forename: Jong Min
authors.initials: JM
authors.lastname: Kim
authors.forename: Esther
authors.initials: E
authors.lastname: Shin
authors.forename: Sin
authors.initials: S
authors.lastname: Kam
authors.forename: Hee Chang
authors.initials: HC
authors.lastname: Jung