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Originally Posted by Surgicalcric
Again I think you are confusing the cause and effects. The effect being "his running went to crap" but the cause wasnt that he was taking a cycle. It was that his focus in training shifted away from cardio (running) so he could put on size. It is the inverse of someone wanting to get smaller so they spend more time on cardio and less time lifting heavy and in the end will give up some strength in the process...
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The above is very true. Most people that go on a cycle decide to judge the effectiveness of a steroid by hitting the weightroom. Often times they get stuck in that mode because the results are positive and are easly measureable.
However, there is research that suggest steroids can affect the functioning of muscle fibre type (cause slow twitch fibres to behave like fast twitch fibres). This would affect endurance. Also, it is relatively easy for faster twitching fibres to become like slow twitch fibres with prolonged low intensity training. Steroids are believed to delay this process. This again can affect endurance.
The bottom line is this....steroids allows an individual to overtrain and still recover. Its no magic pill, it allows you to work harder than the next man who is trying to do it natural. The problem with anabolic steroids (for cardi athletes) is it is very hard to gain an increase in strength and power without gains in lean muscle mass (weight). This becomes a problem when you have to lift you center of mass on each stride for a 5k or 10k run. Most athletes in this group use other performance enhancement drugs PEDS like epo (AIDS medication).
That being said, I know/knew a few sprinters sub 10.12 100m that were on steroids and could still run sub 4:50 miles and do 3 miles in under 17 mins. As Surgicalcric said, it depends on what you focus on.
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