Tom R... I've noticed similar responses when I'm real active... It seems to take a while for my heart to catch up. BUT... I also notice that I've begun to generally breath in a much shallower pattern, and that often my chest wall feels "tight," or "heavy" as I breath. Frustrating, distracting.... and scary. Barb Mallut "Lil_Honey" on the PD Chat [log in to unmask] ---------- From: PARKINSN: Parkinson's Disease - Information Exchange Network on behalf of tom riess Sent: Friday, February 07, 1997 11:33 AM To: Multiple recipients of list PARKINSN Subject: MORE BREATHLESSNESS I too have noticed being short of breath after a relatively small amount of exertion. But I have also found that if I continue the exerting activity I do eventually equilabrate and can sustain the activity for quite some time. My question is, has anyone else noticed a similar phenomenon? Part of PD is disturbances of the autonomic nervous system and the inability to rapidly adjust cardiac output realative to sudden demand may be an additional manifestation of this pathology and represents something fundamentally distinct from the classic exertional apnea.