The Effects of a Single Session of High Intensity Functional Training on Energy Expenditure, VO<sub>2</sub>, and Blood Lactate

Figure 2. Testing Timeline. Resting energy expenditure (REE). Blood lactate (La^-). High intensity function training (HIFT). Session rating of perceived exertion (RPE). Oxygen consumption (VO₂). Heart rate (HR). Excess post-exercise oxygen consumption (EPOC). Hour (h). Minute (m).