This article is from the Hardgainer Bodybuilding & Weightlifting FAQ, by Frank J. Kelly and Craig R. Sadler with numerous contributions by others.
The answer is NO. Many people
will want to nay-say this, but one author has used cycling for over
two years and can honestly say he has never lost any strength during
the recovery phase of any cycle as is shown by good, consistent gains
in the corresponding growing phase: in one cycle adding 85lbs to
the stiff-legged deadlift (to go from 108lbsx10 to 193lbs x10)
over a period of 12 weeks. The build-up phase of cycling is short
enough, but gives enough stimulation to keep your muscle from
'forgetting' what the 100% feels like.
 
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