Fig. 1From: Acute Effects of Single Versus Combined Inhaled β2-Agonists Salbutamol and Formoterol on Time Trial Performance, Lung Function, Metabolic and Endocrine VariablesSchematic representation illustrating the randomized study medication scheme in the four study arms, separated by one-week intervals. Each participant received four blinded medication kits containing 24 sprays in total. Salbutamol (SAL), Formoterol (FOR), and Placebo (PLA)Back to article page