The purpose of this study was to test the accuracy of oxygen uptake (VO2) measurements using the Cosmed K4 portable telemetry system. This system of higher technology than the original Cosmed K2 device, contains a CO2 electrode allowing measurements alternatively by either the Cosmed K4 system (K4) or the CPX Medical Graphics (CPX) during a maximum oxygen uptake (VO2max) ergocycle test, at ...

Ninety-one percent of the children with disability quickly reached a steady-state of oxygen consumption and carbon-dioxide production. The carbon-dioxide sensor in the Cosmed K4 has enabled a new group of severely involved children with cerebral palsy (9%) to be defined. These children have been termed 'physiologically marginal ambulators'.

2002年12月1日 · Results: Bland and Altman analysis revealed a mean bias for the four variables, REE, respiratory quotient (RQ), V CO 2, V O 2 between data obtained from Cosmed K4 b 2 and Deltatrac II TM metabolic cart of 268±702 kcal/day, −0.0±0.2, 26.4±118.2 and 51.6±126.5 ml/min, respectively. Corresponding limits of agreement for the same four variables were all large.

The new Huawei Health Lab is equipped with state-of-the-art testing equipment, like COSMED K5 Wearable metabolic system and the Aquatrainer, the inno… Read more COSMED K5 and the first marathon analyzed by artificial intelligence at Évry Paris-Saclay University

Background and Aims: The objective of the study was to compare data obtained from the Cosmed K4 b2 and the Deltatrac IITM metabolic cart for the purpose of determining the validity of the Cosmed K4 b2 in measuring resting energy expenditure.Methods: Nine adult subjects (four male, five female) were measured. Resting energy expenditure was measured in consecutive sessions using the Cosmed K4 b2 ...

The repeatability of energy-expenditure measurements were studied in five children and four adults without disabilities using the Cosmed K4 (high technology). The ability to detect change in measurements was compared between this instrument and the.

2011年7月27日 · 用Cosmed K4 RQ 和Airspec QP9000 mass spectrometer （四分质谱仪）测量能量消耗量。9 个健康的男性足. 球运动员进行跑步测验，始速度8 km/h，每次增加2. km/h，直到筋疲力尽。在休息时和每次活动时，用. 这2 种设备来测量氧气消耗量和二氧化碳的产量。

The slight overestimation of VO2 (50-200 W) combined with the underestimation of VCO2 (200 and 250W) by the K4 b2 resulted in significantly lower R values at every stage. These findings suggest the COSMED K4 b2 portable metabolic measurement system is acceptable for measuring oxygen uptake over a fairly wide range of exercise intensities.

The Cosmed K4 telemetry system has not been previously described but has some identical characteristics compared with the K2 system widely described (5,8, 11). The K4 system is composed of a soft face mask to sample exhaled air, a sensor system to …

The K2 Cosmed system significantly underestimated V02 measurements at low workloads in comparison with VO2 obtained from a standard metabolic cart (11). A newer model of the K2 Cosmed apparatus has been developed. This system (K4 Cosmed, Roma Italy) contains a CO2 electrode allowing direct measurements of the RER at rest or during exercise.