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- Title
Central and peripheral circulatory responses during four different recovery positions immediately following submaximal exercise.
- Authors
Redondo, Diego R.; Bone, Tommy
- Abstract
This study compared central and peripheral circulatory responses in 10 untrained males during the second minute of four different recovery positions. Prior to each recovery, subjects exercised at 75% heart rate (HR) intensity on the treadmill. The Beckman Metabolic Measurement Cart (MMC) and the CO2 rebreathing procedure were used to measure oxygen consumption (VO2) and cardiac output (Q), respectively. Analysis of variance (ANOVA) with repeated measures was followed by the Tukey's multiple comparison test to determine statistically significant differences among means (p<0.05). When compared to sitting, standing, and supine recoveries, the walking recovery resulted in significantly higher stroke volume (SV), VO2, double product (DP), and estimated myocardial oxygen consumption (MVO2). These data indicate that the walking recovery kept the subjects' cardiac effort elevated above the physiological responses of the passive recoveries. When compared to sitting and standing recoveries, the supine recovery demonstrated significantly higher SV and responses and significantly lower arteriovenous oxygen difference (a-vO2 diff) and systemic vascular resistance (SVR) responses. However, since the VO2, DP, and MVO2 data were not significantly different during the three passive recoveries, the statistical decision is that the nonactive recoveries are cardiovascularly similar. That is, whether the subject is sitting, standing, or in the supine position immediate post- exercise, the physiological responses are the same but only at 2 minutes of recovery.
- Subjects
CARDIOPULMONARY system; CARDIOVASCULAR system; OXYGEN; TREADMILL exercise; ANALYSIS of variance; HEART beat; METABOLISM; MULTIPLE comparisons (Statistics); REBREATHING; STATISTICAL decision making
- Publication
Journal of Exercise Physiology Online, 1998, p1
- ISSN
1097-9751
- Publication type
Article