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Bicycle saddle shape affects penile blood flow


The purpose of this study was to evaluate the effect of bicycle saddle shape on penile blood flow during cycling. Penile blood flow was measured using a laser Doppler flowmeter in 20 potent male volunteers. In a counterbalanced, crossover design, measurements were taken in the standing and sitting positions, on either a narrow unpadded or wide unpadded saddle, before and after cycling for 5 min. Before cycling, penile blood flow (ml/min/100 g tissue) was significantly decreased from 1.6±0.7 to 1.5±0.7 (P=0.010) on the wide saddle and from 1.7±0.6 to 1.0±0.5 (P<0.001) on the narrow saddle. After 5 min of cycling, the changes in penile blood flow on the wide and narrow saddles were 0.34±0.49 and −0.38±0.49, respectively (P<0.001). The narrow saddle is associated with more significant reductions in penile blood flow and could be a source of blunt perineal trauma, potentially leading to erectile dysfunction.

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  1. Munarriz RM et al.. Blunt trauma: the pathophysiology of hemodynamic injury leading to erectile dysfunction J Urol 1995; 153: 1831–1840.

    Article  CAS  Google Scholar 

  2. Andersen KV, Bovim G . Impotence and nerve entrapment in long distance amateur cyclists Acta Neurol Scand 1997; 95: 233–240.

    Article  CAS  Google Scholar 

  3. Levine FJ, Greenfield AJ, Goldstein I . Arteriographically-determined occlusive disease within the hypogastric-cavernous bed in impotent patients following blunt perineal and pelvic trauma J Urol 1990; 144: 1147–1153.

    Article  CAS  Google Scholar 

  4. Armenakes NA et al.. Posttraumatic impotence: magnetic resonance imaging and duplex ultrasound in diagnosis and management J Urol 1993; 149: 1272–1275.

    Article  Google Scholar 

  5. Bond RE . Distance bicycling may cause ischemic neuropathy of penis Physician Sports Med 1975; 3: 54–56.

    Article  Google Scholar 

  6. Sullivan MJ, Binkley PK, Unverferth DV, Leier CV . Hemodynamic and metabolic responses of the exercising lower limb of humans J Lab Clin Med 1987; 110: 145–152.

    CAS  PubMed  Google Scholar 

  7. Sommer F et al.. Impotence and genital numbness in cyclists Int J Sports Med 2001; 22: 410–413.

    Article  CAS  Google Scholar 

  8. Melman A, Christ GJ, Hirsch MS . Anatomy and physiology of the penis In: Bennett AH (ed). Impotence: Diagnosis and Management of Erectile Dysfunction WB Saunders: Philadelphia, PA 1994 pp 18–30.

    Google Scholar 

  9. Soames RW . Skeletal System In: Williams PL (ed). Gray's Anatomy: the Anatomical Basis of Medicine and Surgery 38th edn. Churchill Livingstone: New York 1995 pp 425–736.

    Google Scholar 

  10. Kerstein MD, Gould SA, French-Sherry E, Pirman C . Perineal trauma and vasculogenic impotence J Urol 1982; 127: 57.

    Article  CAS  Google Scholar 

  11. Chevalier JM et al.. Endofibrosis of the external iliac artery in bicycle racers: an unrecognized pathological state Ann Vasc Surg 1986; 3: 297–303.

    Article  Google Scholar 

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Correspondence to K Park.

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Jeong, SJ., Park, K., Moon, JD. et al. Bicycle saddle shape affects penile blood flow. Int J Impot Res 14, 513–517 (2002).

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