Sommer F, Schwarzer U, Graf C, Klotz T, Engelmann U
Klinik und Poliklinik für Urologie der Universität Köln, Germany.
Dtsch Med Wochenschr. 2001 Aug 24;126(34-35):939-43. doi: 10.1055/s-2001-16582.
An increased incidence of erectile dysfunction has been observed in cycling enthusiasts. Compression of the perineal region during cycling seems to cause decreased penile perfusion. The resulting hypoxaemia in the corpus cavernosum is associated with penile fibrosis, which leads in the long run to erectile dysfunction. This study set out to determine if cycling can cause changes in penile perfusion and, if so, what precautions can be taken to avoid any associated health hazards, including whether various saddle forms and designs might influence penile blood flow. COHORTS AND METHODS: In 100 healthy athletic men (aged 36 +/- 6.2 years) transcutaneous penile oxygen pressure (tpO (2)) at the glans penis was measured during cycling in different positions and with different types of saddle, using a modified Clark oxygen electrode.
The penile blood supply decreased significantly during cycling in a seated position. Cycling in a standing or reclining position (on a reclining bicycle) did not lead to any decrease in penile blood flow. Saddle width was the most important factor for ensuring adequate penile perfusion while cycling in a seated position.
This study demonstrates that changing from a seated to a standing position during cycling leads to a significant increase in penile perfusion. Therefore we suggest frequent changes from a seated to a standing position during cycling. Additionally we suggest taking sufficient breaks during prolonged and vigorous bike tours, in order to avoid any possible health hazards. Another, not yet widespread, alternative for avoiding a reduction in penile blood flow is cycling on a reclining bicycle.
在自行车骑行爱好者中，勃起功能障碍的发病率有所上升。骑行过程中会阴区域受到压迫似乎会导致阴茎灌注减少。阴茎海绵体内由此产生的低氧血症与阴茎纤维化有关，从长远来看会导致勃起功能障碍。本研究旨在确定骑行是否会引起阴茎灌注的变化，如果是，可采取哪些预防措施来避免任何相关的健康危害，包括各种鞍座形式和设计是否可能影响阴茎血流。
使用改良的克拉克氧电极，对100名健康男性运动员（年龄36±6.2岁）在不同骑行姿势和使用不同类型鞍座时的阴茎龟头经皮氧分压（tpO₂）进行测量。
在坐姿骑行时，阴茎血液供应显著减少。站立或躺卧姿势（在躺式自行车上）骑行不会导致阴茎血流减少。鞍座宽度是确保坐姿骑行时阴茎有足够灌注的最重要因素。
本研究表明，骑行过程中从坐姿改为站姿会导致阴茎灌注显著增加。因此，我们建议在骑行过程中频繁从坐姿改为站姿。此外，我们建议在长时间剧烈骑行时充分休息，以避免任何可能的健康危害。另一种尚未广泛应用的避免阴茎血流减少的方法是骑躺式自行车。
