Gas Exchange Responses to Ramp Exercise

Abstract

In the present study, the system of oxygen uptake (VO₂) during ramp function exercise protocol can be studied to provide infonnation about the physiological mechanisms underlying the process. The values of maximal oxygen uptake (VO_2max.) and gas exchange threshold (GET) were reproducibly obtained using ramp test protocol. On the other hand, the determination of VO₂/work rate should be restrict to below the exercise intensity of the GET. Therefore, ramp exercise test might be usage for determination of VO_2max, GET and/or VO₂/work rate (i.e., work efficiency). The data obtained in this study concerning the mean response time (MRT) suggests that the ramp test is not a linear, first-order system. Therefore, the ramp exercise test Protocol is recommended for the determination of VO₂ GET and work efficiency, but not for MRT.