Abstract
Background: Several studies have evaluated the accuracy of portable metabolic gas analysis systems, which measure physical activity energy expenditure. Since the Cosmed K2 telemetric system, two K4 devices (RQ and b2) have been developed. Objective: To compare measurements using the Cosmed K4 RQ with measurements by a traditional method (mass spectrometer) for a sample of healthy subjects performing physical exercise of various intensities. Methods: Nine healthy male footballers (mean (SD) age 18.3 (2.2) years) performed an incremental exercise running test from 8 km/h to exhaustion, with an increase of 2 km/h for each level of the test protocol. The expired air was collected simultaneously using the Cosmed K4 RQ and Airspec QP9000 mass spectrometer. Oxygen consumption (VCO2) and carbon dioxide production (VCO 2) were measured at rest and at each exercise intensity. Results: No significant differences were found between VO2 and V CO2measured by the two instruments, at rest or during exercise. Conclusions: The application of the Cosmed K4 RQ system for VO2 and VCO2 measurements at rest and during both submaximal and maximal exercise may be of interest to sport physiologists, nutritionists, and doctors.
| Original language | English |
|---|---|
| Pages (from-to) | 445-447 |
| Number of pages | 3 |
| Journal | British Journal of Sports Medicine |
| Volume | 37 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Oct 2003 |
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ASJC Scopus subject areas
- Public Health, Environmental and Occupational Health
- Orthopedics and Sports Medicine
Cite this
Physical activity energy expenditure measured using a portable telemetric device in comparison with a mass spectrometer. / Maiolo, C.; Melchiorri, G.; Iacopino, L.; Masala, S.; De Lorenzo, A.
In: British Journal of Sports Medicine, Vol. 37, No. 5, 10.2003, p. 445-447.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Physical activity energy expenditure measured using a portable telemetric device in comparison with a mass spectrometer
AU - Maiolo, C.
AU - Melchiorri, G.
AU - Iacopino, L.
AU - Masala, S.
AU - De Lorenzo, A.
PY - 2003/10
Y1 - 2003/10
N2 - Background: Several studies have evaluated the accuracy of portable metabolic gas analysis systems, which measure physical activity energy expenditure. Since the Cosmed K2 telemetric system, two K4 devices (RQ and b2) have been developed. Objective: To compare measurements using the Cosmed K4 RQ with measurements by a traditional method (mass spectrometer) for a sample of healthy subjects performing physical exercise of various intensities. Methods: Nine healthy male footballers (mean (SD) age 18.3 (2.2) years) performed an incremental exercise running test from 8 km/h to exhaustion, with an increase of 2 km/h for each level of the test protocol. The expired air was collected simultaneously using the Cosmed K4 RQ and Airspec QP9000 mass spectrometer. Oxygen consumption (VCO2) and carbon dioxide production (VCO 2) were measured at rest and at each exercise intensity. Results: No significant differences were found between VO2 and V CO2measured by the two instruments, at rest or during exercise. Conclusions: The application of the Cosmed K4 RQ system for VO2 and VCO2 measurements at rest and during both submaximal and maximal exercise may be of interest to sport physiologists, nutritionists, and doctors.
AB - Background: Several studies have evaluated the accuracy of portable metabolic gas analysis systems, which measure physical activity energy expenditure. Since the Cosmed K2 telemetric system, two K4 devices (RQ and b2) have been developed. Objective: To compare measurements using the Cosmed K4 RQ with measurements by a traditional method (mass spectrometer) for a sample of healthy subjects performing physical exercise of various intensities. Methods: Nine healthy male footballers (mean (SD) age 18.3 (2.2) years) performed an incremental exercise running test from 8 km/h to exhaustion, with an increase of 2 km/h for each level of the test protocol. The expired air was collected simultaneously using the Cosmed K4 RQ and Airspec QP9000 mass spectrometer. Oxygen consumption (VCO2) and carbon dioxide production (VCO 2) were measured at rest and at each exercise intensity. Results: No significant differences were found between VO2 and V CO2measured by the two instruments, at rest or during exercise. Conclusions: The application of the Cosmed K4 RQ system for VO2 and VCO2 measurements at rest and during both submaximal and maximal exercise may be of interest to sport physiologists, nutritionists, and doctors.
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UR - http://www.scopus.com/inward/citedby.url?scp=0141991322&partnerID=8YFLogxK
U2 - 10.1136/bjsm.37.5.445
DO - 10.1136/bjsm.37.5.445
M3 - Article
C2 - 14514539
AN - SCOPUS:0141991322
VL - 37
SP - 445
EP - 447
JO - British Journal of Sports Medicine
JF - British Journal of Sports Medicine
SN - 0306-3674
IS - 5
ER -