Abstract
Ten men repeatedly performed leg exercise (100-150 W) for 7 min with 30-min recovery periods interspersed. Both legs were made ischemic by total occlusion (OCCL), first for 3 min immediately after exercise and second for 30 s before exercise ended and 3 min into recovery. In addition, legs were occluded for 3 min at rest (seated). OCCL at rest increased mean arterial pressure (MA) by 9 Torr but did not affect cardiac output (CO) or heart rate (HR). OCCL at the end of exercise significantly raised MAP and HR above control values during 3-min recovery but CO was unaffected. OCCL 30 s before the end of exercise further increased MAP and HR significantly during recovery; MAP, CO, and HR were significantly increased above control values (CO by 2.1 l/min) during the 3rd min of recovery. The authors conclude that a strong reflex from ischemic legs maintains normal or elevated CO during leg OCCL. Thus CO was too high relative to total vascular conductance so that MAP was elevated.
Original language | English (US) |
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Pages (from-to) | 574-580 |
Number of pages | 7 |
Journal | Unknown Journal |
Volume | 45 |
Issue number | 4 |
DOIs | |
State | Published - 1978 |
ASJC Scopus subject areas
- Physiology
- Endocrinology