Abstract
This study examined the relationship between work of breathing and estimated blood flow to and oxygen consumption by the respiratory muscles. Five subjects performed inspiratory loaded breathing and voluntary hyperpnea while ventilatory work, cardiac output, and oxygen consumption were measured. Blood flow to and oxygen consumption by the respiratory muscles were estimated by subtracting the resting from the working values of cardiac output and oxygen consumption, respectively. Loaded breathing increased cardiac output, but there was no significant correlation with work of breathing, while oxygen consumption was significantly correlated with work of breathing. During hyperpnea both cardiac output and oxygen consumption were correlated with work of breathing. Our results indicate that blood flow and oxygen consumption are increased in a regular pattern with increases in work of breathing. These results may be significant in estimating the demand of the respiratory muscles in disease and exercise.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 335-340 |
| Number of pages | 6 |
| Journal | Medicine and Science in Sports and Exercise |
| Volume | 25 |
| Issue number | 3 |
| State | Published - 1993 |
| Externally published | Yes |
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Keywords
- CARDIAC OUTPUT
- DIAPHRAGM
- MUSCLE ENERGETICS
- WORK OF BREATHING
ASJC Scopus subject areas
- Orthopedics and Sports Medicine
- Public Health, Environmental and Occupational Health
- Physical Therapy, Sports Therapy and Rehabilitation
Cite this
Relationship of oxygen consumption and cardiac output to work of breathing. / Coast, Richard J; Krause, K. M.
In: Medicine and Science in Sports and Exercise, Vol. 25, No. 3, 1993, p. 335-340.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relationship of oxygen consumption and cardiac output to work of breathing
AU - Coast, Richard J
AU - Krause, K. M.
PY - 1993
Y1 - 1993
N2 - This study examined the relationship between work of breathing and estimated blood flow to and oxygen consumption by the respiratory muscles. Five subjects performed inspiratory loaded breathing and voluntary hyperpnea while ventilatory work, cardiac output, and oxygen consumption were measured. Blood flow to and oxygen consumption by the respiratory muscles were estimated by subtracting the resting from the working values of cardiac output and oxygen consumption, respectively. Loaded breathing increased cardiac output, but there was no significant correlation with work of breathing, while oxygen consumption was significantly correlated with work of breathing. During hyperpnea both cardiac output and oxygen consumption were correlated with work of breathing. Our results indicate that blood flow and oxygen consumption are increased in a regular pattern with increases in work of breathing. These results may be significant in estimating the demand of the respiratory muscles in disease and exercise.
AB - This study examined the relationship between work of breathing and estimated blood flow to and oxygen consumption by the respiratory muscles. Five subjects performed inspiratory loaded breathing and voluntary hyperpnea while ventilatory work, cardiac output, and oxygen consumption were measured. Blood flow to and oxygen consumption by the respiratory muscles were estimated by subtracting the resting from the working values of cardiac output and oxygen consumption, respectively. Loaded breathing increased cardiac output, but there was no significant correlation with work of breathing, while oxygen consumption was significantly correlated with work of breathing. During hyperpnea both cardiac output and oxygen consumption were correlated with work of breathing. Our results indicate that blood flow and oxygen consumption are increased in a regular pattern with increases in work of breathing. These results may be significant in estimating the demand of the respiratory muscles in disease and exercise.
KW - CARDIAC OUTPUT
KW - DIAPHRAGM
KW - MUSCLE ENERGETICS
KW - WORK OF BREATHING
UR - http://www.scopus.com/inward/record.url?scp=0027499320&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027499320&partnerID=8YFLogxK
M3 - Article
VL - 25
SP - 335
EP - 340
JO - Medicine and Science in Sports and Exercise
JF - Medicine and Science in Sports and Exercise
SN - 0195-9131
IS - 3
ER -