Abstract: Eighteen cases with post-exercise syncope or hypotenstion are reported in this paper. All subjects were middle-aged or elerly. The Characteristics include significant bradycardia or transient asystole, hypotension and dizziness or syncope,which occured 2 to 6 minutes after exercise and relieved a few minutes with supine position. Its occurence was related to exercise intensity and the capacity of cardiovascular regulation,but there was no any pathological evidence. The mechanism of this phenomenon remains nuclear.

Key words: hypotension, exercise