Effects of antioxidant-rich foods on altitude-induced oxidative stress and inflammation in elite endurance athletes: A randomized controlled trial
Fig 5
The change in log-transformed plasma cytokine concentrations in response to exercise stress-test (VO2max ramp test/100 m swimming) pre- and post-altitude presented as delta (Δ) (post-test concentration − Pre-test concentration).
P-values were calculated using ordinary least squares regression with Δ as the outcome variable and time (post-altitude vs. pre-altitude) as the predictor.