Perceptual Responses to Exercise: The Effect of Load-Awareness on Physiological Responses During an Isometric Bout

To evaluate the effect of awareness of load on cardiovascular and metabolic responses, thirty males were compared in three different loads during upright deadlift isometric exercise, at 25%, 30% and 35% of maximal voluntary contraction for 3 min. Significant differences (P < 0.05) were found from...

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Bibliographic Details
Published in:International journal of sports medicine 1999, Vol.20 (1), p.44-47
Main Authors: Sacgiv, M., Bar-Eli, M., Ben-Sira, D.
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Awareness
Biological and medical sciences
Blood Pressure - physiology
Electrocardiography
Exercise - physiology
Fundamental and applied biological sciences. Psychology
Heart Rate - physiology
Humans
Lactates - blood
Male
Oxygen Consumption - physiology
Skinfold Thickness
Space life sciences
Training and Testing
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
Weight Perception
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Summary:To evaluate the effect of awareness of load on cardiovascular and metabolic responses, thirty males were compared in three different loads during upright deadlift isometric exercise, at 25%, 30% and 35% of maximal voluntary contraction for 3 min. Significant differences (P < 0.05) were found from rest to 25%, 30% and 35% for all physiological variables, heart rate (66.5+/-9.0, 104.0+/-12.0, 115.0+/-9.0, and 123.0+/-11.0 beats x min(-1), respectively), and for lactic acid (2.2+/-0.4, 4.6+/-0.7, 5.7+/-1.1, and 6.3+/-1.5 mM x l(-1), respectively). However, no significant differences were revealed between the various conditions when rate-perceived exertion data were analyzed, despite increased absolute loads. These data indicate that the psychological manipulation introduced in this study did not affect physiological responses during isometric exercise, in contrast to that seen during dynamic exercise.
ISSN:0172-4622
1439-3964
DOI:10.1055/s-2007-971090