approaching significanceP < 0.001
At peak exercise in HFpEF, predictors of indexed lactate levels included female sex and CKD, with age approaching significance [female: 0.03 mmol/W (95% CI 0.01, 0.04), P < 0.001; CKD: 0.03 mmol/W (95% CI 0.01, 0.05), P < 0.001; Table 5 ].