Figure 1

Changes in physiological and work variables from Test 1 to Test 2 at maximal intensity. Inset: Non-significant test differences for maximal respiratory exchange ratio showed that subjects achieved consistently high RER (>1.1) for Test 1 and Test 2, with maximum efforts on both tests (P = .157). Statistical significance is shown above bars with **P < 0.01 and *P < 0.05.